Understand Firebase for Android

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"https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{ "@type": "ListItem", "position": 1, "name": "Documentation", "item": "https://firebase.google.com/docs" },{ "@type": "ListItem", "position": 2, "name": "Firebase for Android", "item": "https://firebase.google.com/docs/android" },{ "@type": "ListItem", "position": 3, "name": "Understand Firebase for Android", "item": "https://firebase.google.com/docs/android/learn-more" }] } </script> <link rel="stylesheet" href="/extras.css"></head> <body class="" template="page" theme="firebase-icy-theme" type="guide" appearance layout="docs" concierge='closed' display-toc pending> <devsite-progress type="indeterminate" id="app-progress"></devsite-progress> <a href="#main-content" class="skip-link button"> Skip to main content </a> <section class="devsite-wrapper"> <devsite-cookie-notification-bar></devsite-cookie-notification-bar><devsite-header role="banner" keep-tabs-visible> <div class="devsite-header--inner nocontent"> <div class="devsite-top-logo-row-wrapper-wrapper"> <div class="devsite-top-logo-row-wrapper"> <div class="devsite-top-logo-row"> <button type="button" id="devsite-hamburger-menu" class="devsite-header-icon-button button-flat material-icons gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Navigation menu button" visually-hidden aria-label="Open menu"> </button> <div class="devsite-product-name-wrapper"> <a href="/" class="devsite-site-logo-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Site logo" track-type="globalNav" track-name="firebase" track-metadata-position="nav" track-metadata-eventDetail="nav"> <picture> <source srcset="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/firebase/images/lockup.svg" media="(prefers-color-scheme: dark)" class="devsite-dark-theme" alt="Firebase"> <img 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track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products-build" track-metadata-position="nav - build" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Build" track-name="build" class="devsite-tabs-dropdown-toggle devsite-icon devsite-icon-arrow-drop-down"></button> <div class="devsite-tabs-dropdown" role="menu" aria-label="submenu" hidden> <div class="devsite-tabs-dropdown-content"> <div class="devsite-tabs-dropdown-column firebase-dropdown firebase-dropdown--primary firebase-build"> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>Build</li> <li class="devsite-nav-description">Get to market quickly and securely with products that can scale globally </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products-build" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products-build" track-metadata-position="nav - build" track-metadata-module="tertiary nav" track-metadata-module_headline="build" tooltip > <div class="devsite-nav-item-title"> Go to Build </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column firebase-dropdown firebase-dropdown--secondary firebase-build"> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>Build Products</li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/app-check" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/app-check" track-metadata-position="nav - build" track-metadata-module="tertiary nav" track-metadata-module_headline="build products" tooltip > <div class="devsite-nav-item-title"> App Check </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/app-hosting" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/app-hosting" track-metadata-position="nav - build" track-metadata-module="tertiary nav" track-metadata-module_headline="build products" tooltip > <div class="devsite-nav-item-title"> App Hosting </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/auth" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/auth" track-metadata-position="nav - build" track-metadata-module="tertiary nav" track-metadata-module_headline="build products" tooltip > <div class="devsite-nav-item-title"> Authentication </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/functions" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/functions" track-metadata-position="nav - build" track-metadata-module="tertiary nav" track-metadata-module_headline="build products" tooltip > <div class="devsite-nav-item-title"> Cloud Functions </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/storage" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/storage" track-metadata-position="nav - build" track-metadata-module="tertiary nav" track-metadata-module_headline="build products" tooltip > <div class="devsite-nav-item-title"> Cloud Storage </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/data-connect" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/data-connect" track-metadata-position="nav - build" track-metadata-module="tertiary nav" track-metadata-module_headline="build products" tooltip > <div class="devsite-nav-item-title"> Data Connect </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/extensions" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/extensions" track-metadata-position="nav - build" track-metadata-module="tertiary nav" track-metadata-module_headline="build products" tooltip > <div class="devsite-nav-item-title"> Extensions </div> </a> </li> </ul> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/ml" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/ml" track-metadata-position="nav - build" track-metadata-module="tertiary nav" track-metadata-module_headline="build products" tooltip > <div class="devsite-nav-item-title"> Firebase ML </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/firestore" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/firestore" track-metadata-position="nav - build" track-metadata-module="tertiary nav" track-metadata-module_headline="build products" tooltip > <div class="devsite-nav-item-title"> Firestore </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/genkit" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/genkit" track-metadata-position="nav - build" track-metadata-module="tertiary nav" track-metadata-module_headline="build products" tooltip > <div class="devsite-nav-item-title"> Genkit </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/hosting" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/hosting" track-metadata-position="nav - build" track-metadata-module="tertiary nav" track-metadata-module_headline="build products" tooltip > <div class="devsite-nav-item-title"> Hosting </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/realtime-database" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/realtime-database" track-metadata-position="nav - build" track-metadata-module="tertiary nav" track-metadata-module_headline="build products" tooltip > <div class="devsite-nav-item-title"> Realtime Database </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/vertex-ai-in-firebase" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/vertex-ai-in-firebase" track-metadata-position="nav - build" track-metadata-module="tertiary nav" track-metadata-module_headline="build products" tooltip > <div class="devsite-nav-item-title"> Vertex AI in Firebase </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/generative-ai" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/generative-ai" track-metadata-position="nav - build" track-metadata-module="tertiary nav" track-metadata-module_headline="build products" tooltip > <div class="devsite-nav-item-title"> Generative AI </div> </a> </li> </ul> </div> </div> </div> </tab> <tab class="devsite-dropdown "> <a href="https://firebase.google.com/products-run" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://firebase.google.com/products-run" track-type="nav" track-metadata-position="nav - run" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Run" track-name="run" > Run </a> <button aria-haspopup="menu" aria-expanded="false" aria-label="Dropdown menu for Run" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products-run" track-metadata-position="nav - run" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Run" track-name="run" class="devsite-tabs-dropdown-toggle devsite-icon devsite-icon-arrow-drop-down"></button> <div class="devsite-tabs-dropdown" role="menu" aria-label="submenu" hidden> <div class="devsite-tabs-dropdown-content"> <div class="devsite-tabs-dropdown-column firebase-dropdown firebase-dropdown--primary firebase-run"> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>Run</li> <li class="devsite-nav-description">Run your app with confidence and deliver the best experience for your users </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products-run" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products-run" track-metadata-position="nav - run" track-metadata-module="tertiary nav" track-metadata-module_headline="run" tooltip > <div class="devsite-nav-item-title"> Go to Run </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column firebase-dropdown firebase-dropdown--secondary"> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>Run Products</li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/ab-testing" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/ab-testing" track-metadata-position="nav - run" track-metadata-module="tertiary nav" track-metadata-module_headline="run products" tooltip > <div class="devsite-nav-item-title"> A/B Testing </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/app-distribution" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/app-distribution" track-metadata-position="nav - run" track-metadata-module="tertiary nav" track-metadata-module_headline="run products" tooltip > <div class="devsite-nav-item-title"> App Distribution </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/cloud-messaging" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/cloud-messaging" track-metadata-position="nav - run" track-metadata-module="tertiary nav" track-metadata-module_headline="run products" tooltip > <div class="devsite-nav-item-title"> Cloud Messaging </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/crashlytics" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/crashlytics" track-metadata-position="nav - run" track-metadata-module="tertiary nav" track-metadata-module_headline="run products" tooltip > <div class="devsite-nav-item-title"> Crashlytics </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/analytics" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/analytics" track-metadata-position="nav - run" track-metadata-module="tertiary nav" track-metadata-module_headline="run products" tooltip > <div class="devsite-nav-item-title"> Google Analytics </div> </a> </li> </ul> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/in-app-messaging" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/in-app-messaging" track-metadata-position="nav - run" track-metadata-module="tertiary nav" track-metadata-module_headline="run products" tooltip > <div class="devsite-nav-item-title"> In-App Messaging </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/performance" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/performance" track-metadata-position="nav - run" track-metadata-module="tertiary nav" track-metadata-module_headline="run products" tooltip > <div class="devsite-nav-item-title"> Performance Monitoring </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/remote-config" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/remote-config" track-metadata-position="nav - run" track-metadata-module="tertiary nav" track-metadata-module_headline="run products" tooltip > <div class="devsite-nav-item-title"> Remote Config </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/products/test-lab" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/products/test-lab" track-metadata-position="nav - run" track-metadata-module="tertiary nav" track-metadata-module_headline="run products" tooltip > <div class="devsite-nav-item-title"> Test Lab </div> </a> </li> </ul> </div> </div> </div> </tab> <tab > <a href="https://firebase.google.com/solutions" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://firebase.google.com/solutions" track-type="nav" track-metadata-position="nav - solutions" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Solutions" track-name="solutions" > Solutions </a> </tab> <tab > <a href="https://firebase.google.com/pricing" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://firebase.google.com/pricing" track-type="nav" track-metadata-position="nav - pricing" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Pricing" track-name="pricing" > Pricing </a> </tab> <tab class="devsite-dropdown devsite-active "> <a href="https://firebase.google.com/docs" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://firebase.google.com/docs" track-type="nav" track-metadata-position="nav - docs" track-metadata-module="primary nav" aria-label="Docs, selected" data-category="Site-Wide Custom Events" data-label="Tab: Docs" track-name="docs" > Docs </a> <button aria-haspopup="menu" aria-expanded="false" aria-label="Dropdown menu for Docs" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs" track-metadata-position="nav - docs" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Docs" track-name="docs" class="devsite-tabs-dropdown-toggle devsite-icon devsite-icon-arrow-drop-down"></button> <div class="devsite-tabs-dropdown" role="menu" aria-label="submenu" hidden> <div class="devsite-tabs-dropdown-content"> <div class="devsite-tabs-dropdown-column "> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Overview </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/guides" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/guides" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Fundamentals </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/build" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/build" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Build </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/run" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/run" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Run </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/reference" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/reference" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Reference </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/samples" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/samples" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Samples </div> </a> </li> </ul> </div> </div> </div> </tab> <tab class="devsite-dropdown "> <a href="https://firebase.google.com/community" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://firebase.google.com/community" track-type="nav" track-metadata-position="nav - community" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Community" track-name="community" > Community </a> <button aria-haspopup="menu" aria-expanded="false" aria-label="Dropdown menu for Community" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/community" track-metadata-position="nav - community" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Community" track-name="community" class="devsite-tabs-dropdown-toggle devsite-icon devsite-icon-arrow-drop-down"></button> <div class="devsite-tabs-dropdown" role="menu" aria-label="submenu" hidden> <div class="devsite-tabs-dropdown-content"> <div class="devsite-tabs-dropdown-column "> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-item"> <a href="https://firebase.google.com/community/learn" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/community/learn" track-metadata-position="nav - community" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Learn </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/community/events" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/community/events" track-metadata-position="nav - community" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Events </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/community/stories" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/community/stories" track-metadata-position="nav - community" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Stories </div> </a> </li> </ul> </div> </div> </div> </tab> <tab > <a href="https://firebase.google.com/support" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://firebase.google.com/support" track-type="nav" track-metadata-position="nav - support" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Support" track-name="support" > Support </a> </tab> </nav> </devsite-tabs> </div> <devsite-search enable-signin enable-search enable-suggestions enable-query-completion project-name="Firebase for Android" tenant-name="Firebase" > <form class="devsite-search-form" action="https://firebase.google.com/s/results" method="GET"> <div class="devsite-search-container"> <button type="button" search-open class="devsite-search-button devsite-header-icon-button button-flat material-icons" aria-label="Open search"></button> <div class="devsite-searchbox"> <input aria-activedescendant="" aria-autocomplete="list" aria-label="Search" aria-expanded="false" aria-haspopup="listbox" autocomplete="off" class="devsite-search-field devsite-search-query" name="q" placeholder="Search" role="combobox" type="text" value="" > <div class="devsite-search-image material-icons" aria-hidden="true"> </div> <div class="devsite-search-shortcut-icon-container" aria-hidden="true"> <kbd class="devsite-search-shortcut-icon">/</kbd> </div> </div> </div> </form> <button type="button" search-close class="devsite-search-button devsite-header-icon-button button-flat material-icons" aria-label="Close search"></button> </devsite-search> </div> <devsite-appearance-selector></devsite-appearance-selector> <devsite-language-selector> <ul role="presentation"> <li role="presentation"> <a role="menuitem" lang="en" >English</a> </li> <li role="presentation"> <a role="menuitem" lang="de" >Deutsch</a> </li> <li role="presentation"> <a role="menuitem" lang="es_419" >Español – América Latina</a> </li> <li role="presentation"> <a role="menuitem" lang="fr" >Français</a> </li> <li role="presentation"> <a role="menuitem" lang="id" >Indonesia</a> </li> <li role="presentation"> <a role="menuitem" lang="it" >Italiano</a> </li> <li role="presentation"> <a role="menuitem" lang="pl" >Polski</a> </li> <li role="presentation"> <a role="menuitem" lang="pt_br" >Português – Brasil</a> </li> <li role="presentation"> <a role="menuitem" lang="vi" >Tiếng Việt</a> </li> <li role="presentation"> <a role="menuitem" lang="tr" >Türkçe</a> </li> <li role="presentation"> <a role="menuitem" lang="ru" >Русский</a> </li> <li role="presentation"> <a role="menuitem" lang="he" >עברית</a> </li> <li role="presentation"> <a role="menuitem" lang="ar" >العربيّة</a> </li> <li role="presentation"> <a role="menuitem" lang="fa" >فارسی</a> </li> <li role="presentation"> <a role="menuitem" lang="hi" >हिंदी</a> </li> <li role="presentation"> <a role="menuitem" lang="bn" >বাংলা</a> </li> <li role="presentation"> <a role="menuitem" lang="th" >ภาษาไทย</a> </li> <li role="presentation"> <a role="menuitem" lang="zh_cn" >中文 – 简体</a> </li> <li role="presentation"> <a role="menuitem" lang="zh_tw" >中文 – 繁體</a> </li> <li role="presentation"> <a role="menuitem" lang="ja" >日本語</a> </li> <li role="presentation"> <a role="menuitem" lang="ko" >한국어</a> </li> </ul> </devsite-language-selector> <a class="devsite-header-link devsite-top-button button gc-analytics-event" href="//console.firebase.google.com" data-category="Site-Wide Custom Events" data-label="Site header link" > Go to console </a> <devsite-user enable-profiles fp-auth id="devsite-user"> <span class="button devsite-top-button" aria-hidden="true" visually-hidden>Sign in</span> </devsite-user> </div> </div> </div> <div class="devsite-collapsible-section "> <div class="devsite-header-background"> <div class="devsite-product-id-row" > <div class="devsite-product-description-row"> <ul class="devsite-breadcrumb-list" aria-label="Lower header breadcrumb"> <li class="devsite-breadcrumb-item "> <a href="https://firebase.google.com/docs" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Lower Header" data-value="1" track-type="globalNav" track-name="breadcrumb" track-metadata-position="1" track-metadata-eventdetail="Firebase Documentation" > Documentation </a> </li> <li class="devsite-breadcrumb-item "> <div class="devsite-breadcrumb-guillemet material-icons" aria-hidden="true"></div> <a href="https://firebase.google.com/docs/android" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Lower Header" data-value="2" track-type="globalNav" track-name="breadcrumb" track-metadata-position="2" track-metadata-eventdetail="Firebase for Android" > Firebase for Android </a> </li> </ul> </div> </div> <div class="devsite-doc-set-nav-row"> <devsite-tabs class="lower-tabs"> <nav class="devsite-tabs-wrapper" aria-label="Lower tabs"> <tab > <a href="https://firebase.google.com/docs" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://firebase.google.com/docs" track-type="nav" track-metadata-position="nav - overview" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Overview" track-name="overview" > Overview </a> </tab> <tab class="devsite-dropdown devsite-active "> <a href="https://firebase.google.com/docs/guides" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://firebase.google.com/docs/guides" track-type="nav" track-metadata-position="nav - fundamentals" track-metadata-module="primary nav" aria-label="Fundamentals, selected" data-category="Site-Wide Custom Events" data-label="Tab: Fundamentals" track-name="fundamentals" > Fundamentals </a> <button aria-haspopup="menu" aria-expanded="false" aria-label="Dropdown menu for Fundamentals" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/guides" track-metadata-position="nav - fundamentals" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Fundamentals" track-name="fundamentals" class="devsite-tabs-dropdown-toggle devsite-icon devsite-icon-arrow-drop-down"></button> <div class="devsite-tabs-dropdown" role="menu" aria-label="submenu" hidden> <div class="devsite-tabs-dropdown-content"> <div class="devsite-tabs-dropdown-column "> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/ios/setup" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/ios/setup" track-metadata-position="nav - fundamentals" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Add Firebase - Apple platforms (iOS+) </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/android/setup" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/android/setup" track-metadata-position="nav - fundamentals" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Add Firebase - Android </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/web/setup" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/web/setup" track-metadata-position="nav - fundamentals" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Add Firebase - Web </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/flutter/setup" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/flutter/setup" track-metadata-position="nav - fundamentals" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Add Firebase - Flutter </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/cpp/setup" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/cpp/setup" track-metadata-position="nav - fundamentals" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Add Firebase - C++ </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/unity/setup" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/unity/setup" track-metadata-position="nav - fundamentals" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Add Firebase - Unity </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/admin/setup" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/admin/setup" track-metadata-position="nav - fundamentals" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Add Firebase - Server environments </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/projects/learn-more" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/projects/learn-more" track-metadata-position="nav - fundamentals" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Manage Firebase projects </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/libraries" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/libraries" track-metadata-position="nav - fundamentals" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Supported platforms & frameworks </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/emulator-suite" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/emulator-suite" track-metadata-position="nav - fundamentals" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Use Emulator Suite </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/gemini-in-firebase" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/gemini-in-firebase" track-metadata-position="nav - fundamentals" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> AI assistance with Gemini in Firebase </div> </a> </li> </ul> </div> </div> </div> </tab> <tab class="devsite-dropdown "> <a href="https://firebase.google.com/docs/build" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://firebase.google.com/docs/build" track-type="nav" track-metadata-position="nav - build" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Build" track-name="build" > Build </a> <button aria-haspopup="menu" aria-expanded="false" aria-label="Dropdown menu for Build" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/build" track-metadata-position="nav - build" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Build" track-name="build" class="devsite-tabs-dropdown-toggle devsite-icon devsite-icon-arrow-drop-down"></button> <div class="devsite-tabs-dropdown" role="menu" aria-label="submenu" hidden> <div class="devsite-tabs-dropdown-content"> <div class="devsite-tabs-dropdown-column "> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/emulator-suite" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/emulator-suite" track-metadata-position="nav - build" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Emulator Suite </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/auth" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/auth" track-metadata-position="nav - build" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Authentication </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/app-check" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/app-check" track-metadata-position="nav - build" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> App Check </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/data-connect" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/data-connect" track-metadata-position="nav - build" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Data Connect </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/firestore" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/firestore" track-metadata-position="nav - build" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Firestore </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/database" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/database" track-metadata-position="nav - build" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Realtime Database </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/storage" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/storage" track-metadata-position="nav - build" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Storage </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/rules" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/rules" track-metadata-position="nav - build" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Security Rules </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/app-hosting" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/app-hosting" track-metadata-position="nav - build" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> App Hosting </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/hosting" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/hosting" track-metadata-position="nav - build" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Hosting </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/functions" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/functions" track-metadata-position="nav - build" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Cloud Functions </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/extensions" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/extensions" track-metadata-position="nav - build" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Extensions </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/vertex-ai" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/vertex-ai" track-metadata-position="nav - build" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Vertex AI in Firebase </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/genkit" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/genkit" track-metadata-position="nav - build" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Genkit </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/ml" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/ml" track-metadata-position="nav - build" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> ML </div> </a> </li> </ul> </div> </div> </div> </tab> <tab class="devsite-dropdown "> <a href="https://firebase.google.com/docs/run" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://firebase.google.com/docs/run" track-type="nav" track-metadata-position="nav - run" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Run" track-name="run" > Run </a> <button aria-haspopup="menu" aria-expanded="false" aria-label="Dropdown menu for Run" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/run" track-metadata-position="nav - run" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Run" track-name="run" class="devsite-tabs-dropdown-toggle devsite-icon devsite-icon-arrow-drop-down"></button> <div class="devsite-tabs-dropdown" role="menu" aria-label="submenu" hidden> <div class="devsite-tabs-dropdown-content"> <div class="devsite-tabs-dropdown-column "> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/test-lab" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/test-lab" track-metadata-position="nav - run" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Test Lab </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/app-distribution" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/app-distribution" track-metadata-position="nav - run" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> App Distribution </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/crashlytics" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/crashlytics" track-metadata-position="nav - run" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Crashlytics </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/perf-mon" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/perf-mon" track-metadata-position="nav - run" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Performance Monitoring </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/remote-config" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/remote-config" track-metadata-position="nav - run" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Remote Config </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/ab-testing" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/ab-testing" track-metadata-position="nav - run" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> A/B Testing </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/analytics" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/analytics" track-metadata-position="nav - run" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Analytics </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/cloud-messaging" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/cloud-messaging" track-metadata-position="nav - run" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Cloud Messaging </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/in-app-messaging" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/in-app-messaging" track-metadata-position="nav - run" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> In-App Messaging </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/dynamic-links" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/dynamic-links" track-metadata-position="nav - run" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Dynamic Links </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/admob" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/admob" track-metadata-position="nav - run" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Google AdMob </div> </a> </li> <li class="devsite-nav-item"> <a href="https://firebase.google.com/docs/ads" track-type="nav" track-metadata-eventdetail="https://firebase.google.com/docs/ads" track-metadata-position="nav - run" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Google Ads </div> </a> </li> </ul> </div> </div> </div> </tab> <tab > <a href="https://firebase.google.com/docs/reference" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://firebase.google.com/docs/reference" track-type="nav" track-metadata-position="nav - reference" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Reference" track-name="reference" > Reference </a> </tab> <tab > <a href="https://firebase.google.com/docs/samples" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://firebase.google.com/docs/samples" track-type="nav" track-metadata-position="nav - samples" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Samples" track-name="samples" > Samples </a> </tab> </nav> </devsite-tabs> </div> </div> </div> </div> </devsite-header> <devsite-book-nav scrollbars > <div class="devsite-book-nav-filter" > <span class="filter-list-icon material-icons" aria-hidden="true"></span> <input type="text" placeholder="Filter" aria-label="Type to filter" role="searchbox"> <span class="filter-clear-button hidden" data-title="Clear filter" aria-label="Clear filter" role="button" tabindex="0"></span> </div> <nav class="devsite-book-nav devsite-nav nocontent" aria-label="Side menu"> <div class="devsite-mobile-header"> <button type="button" id="devsite-close-nav" class="devsite-header-icon-button button-flat material-icons gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Close navigation" aria-label="Close navigation"> </button> <div class="devsite-product-name-wrapper"> <a href="/" class="devsite-site-logo-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Site logo" track-type="globalNav" track-name="firebase" track-metadata-position="nav" track-metadata-eventDetail="nav"> <picture> <source srcset="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/firebase/images/lockup.svg" media="(prefers-color-scheme: dark)" class="devsite-dark-theme" alt="Firebase"> <img src="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/firebase/images/lockup.svg" class="devsite-site-logo" alt="Firebase"> </picture> </a> <span class="devsite-product-name"> <ul class="devsite-breadcrumb-list" > <li class="devsite-breadcrumb-item "> </li> </ul> </span> </div> </div> <div class="devsite-book-nav-wrapper"> <div class="devsite-mobile-nav-top"> <ul class="devsite-nav-list"> <li class="devsite-nav-item"> <a href="/products-build" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Build" track-name="build" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Build" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Build </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu "> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Build" track-name="build" > <span class="devsite-nav-text" tooltip menu="Build"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Build"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/products-run" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Run" track-name="run" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Run" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Run </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu "> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Run" track-name="run" > <span class="devsite-nav-text" tooltip menu="Run"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Run"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/solutions" class="devsite-nav-title gc-analytics-event devsite-nav-has-children " data-category="Site-Wide Custom Events" data-label="Tab: Solutions" track-name="solutions" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Solutions" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Solutions </span> <span class="devsite-nav-icon material-icons" data-icon="forward" > </span> </a> </li> <li class="devsite-nav-item"> <a href="/pricing" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Pricing" track-name="pricing" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Pricing" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Pricing </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs" class="devsite-nav-title gc-analytics-event devsite-nav-active" data-category="Site-Wide Custom Events" data-label="Tab: Docs" track-name="docs" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Docs" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Docs </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu "> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Docs" track-name="docs" > <span class="devsite-nav-text" tooltip menu="Docs"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Docs"> </span> </span> </li> </ul> <ul class="devsite-nav-responsive-tabs"> <li class="devsite-nav-item"> <a href="/docs" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Overview" track-name="overview" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Overview" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Overview </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/guides" class="devsite-nav-title gc-analytics-event devsite-nav-has-children devsite-nav-active" data-category="Site-Wide Custom Events" data-label="Tab: Fundamentals" track-name="fundamentals" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Fundamentals" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip menu="_book"> Fundamentals </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="_book"> </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu devsite-lower-tab-item"> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Fundamentals" track-name="fundamentals" > <span class="devsite-nav-text" tooltip menu="Fundamentals"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Fundamentals"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/docs/build" class="devsite-nav-title gc-analytics-event devsite-nav-has-children " data-category="Site-Wide Custom Events" data-label="Tab: Build" track-name="build" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Build" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Build </span> <span class="devsite-nav-icon material-icons" data-icon="forward" > </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu devsite-lower-tab-item"> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Build" track-name="build" > <span class="devsite-nav-text" tooltip menu="Build"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Build"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/docs/run" class="devsite-nav-title gc-analytics-event devsite-nav-has-children " data-category="Site-Wide Custom Events" data-label="Tab: Run" track-name="run" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Run" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Run </span> <span class="devsite-nav-icon material-icons" data-icon="forward" > </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu devsite-lower-tab-item"> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Run" track-name="run" > <span class="devsite-nav-text" tooltip menu="Run"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Run"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/docs/reference" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Reference" track-name="reference" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Reference" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Reference </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/samples" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Samples" track-name="samples" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Samples" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Samples </span> </a> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/community" class="devsite-nav-title gc-analytics-event devsite-nav-has-children " data-category="Site-Wide Custom Events" data-label="Tab: Community" track-name="community" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Community" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Community </span> <span class="devsite-nav-icon material-icons" data-icon="forward" > </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu "> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Community" track-name="community" > <span class="devsite-nav-text" tooltip menu="Community"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Community"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/support" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Support" track-name="support" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Support" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Support </span> </a> </li> <li class="devsite-nav-item"> <a href="//console.firebase.google.com" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Go to console" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Go to console </span> </a> </li> </ul> </div> <div class="devsite-mobile-nav-bottom"> <ul class="devsite-nav-list" menu="_book"> <li class="devsite-nav-item"><a href="/docs/guides" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/guides" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/guides" ><span class="devsite-nav-text" tooltip>Fundamentals</span></a></li> <li class="devsite-nav-item devsite-nav-expandable devsite-nav-accordion"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Get started with Firebase</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Add Firebase to an app</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/ios/setup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/ios/setup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/ios/setup" ><span class="devsite-nav-text" tooltip>Apple platforms (iOS+)</span></a></li><li class="devsite-nav-item"><a href="/docs/android/setup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/android/setup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/android/setup" ><span class="devsite-nav-text" tooltip>Android</span></a></li><li class="devsite-nav-item"><a href="/docs/web/setup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/web/setup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/web/setup" ><span class="devsite-nav-text" tooltip>Web</span></a></li><li class="devsite-nav-item"><a href="/docs/flutter/setup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/flutter/setup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/flutter/setup" ><span class="devsite-nav-text" tooltip>Flutter</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Add Firebase to a game</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/games/setup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/games/setup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/games/setup" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/docs/cpp/setup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/cpp/setup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/cpp/setup" ><span class="devsite-nav-text" tooltip>C++</span></a></li><li class="devsite-nav-item"><a href="/docs/unity/setup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/unity/setup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/unity/setup" ><span class="devsite-nav-text" tooltip>Unity</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/docs/admin/setup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/admin/setup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/admin/setup" ><span class="devsite-nav-text" tooltip>Add Firebase to a server</span></a></li><li class="devsite-nav-item devsite-nav-beta"><a href="/docs/projects/api/workflow_set-up-and-manage-project" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/api/workflow_set-up-and-manage-project" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/api/workflow_set-up-and-manage-project" ><span class="devsite-nav-text" tooltip>Set up projects programmatically</span><span class="devsite-nav-icon material-icons" data-icon="beta" data-title="Beta" aria-hidden="true"></span></a></li><li class="devsite-nav-item"><a href="/docs/projects/use-firebase-with-existing-cloud-project" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/use-firebase-with-existing-cloud-project" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/use-firebase-with-existing-cloud-project" ><span class="devsite-nav-text" tooltip>Use Firebase with existing Cloud project</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable devsite-nav-accordion"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Manage your Firebase projects</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/projects/learn-more" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/learn-more" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/learn-more" ><span class="devsite-nav-text" tooltip>Understand Firebase projects</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Set up development workflows</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/projects/dev-workflows/overview-environments" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/dev-workflows/overview-environments" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/dev-workflows/overview-environments" ><span class="devsite-nav-text" tooltip>Overview of environments</span></a></li><li class="devsite-nav-item"><a href="/docs/projects/dev-workflows/general-best-practices" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/dev-workflows/general-best-practices" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/dev-workflows/general-best-practices" ><span class="devsite-nav-text" tooltip>General best practices</span></a></li><li class="devsite-nav-item"><a href="/docs/projects/dev-workflows/general-security-guidelines" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/dev-workflows/general-security-guidelines" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/dev-workflows/general-security-guidelines" ><span class="devsite-nav-text" tooltip>General security guidelines</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/docs/projects/multiprojects" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/multiprojects" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/multiprojects" ><span class="devsite-nav-text" tooltip>Configure multiple projects</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Understand billing</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/projects/billing/firebase-pricing-plans" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/billing/firebase-pricing-plans" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/billing/firebase-pricing-plans" ><span class="devsite-nav-text" tooltip>Firebase pricing plans</span></a></li><li class="devsite-nav-item"><a href="/docs/projects/billing/avoid-surprise-bills" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/billing/avoid-surprise-bills" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/billing/avoid-surprise-bills" ><span class="devsite-nav-text" tooltip>Avoid surprise bills</span></a></li><li class="devsite-nav-item"><a href="/docs/projects/billing/advanced-billing-alerts-logic" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/billing/advanced-billing-alerts-logic" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/billing/advanced-billing-alerts-logic" ><span class="devsite-nav-text" tooltip>Advanced billing alerts & logic</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/docs/projects/api-keys" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/api-keys" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/api-keys" ><span class="devsite-nav-text" tooltip>Learn about API keys for Firebase</span></a></li><li class="devsite-nav-item"><a href="/docs/projects/locations" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/locations" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/locations" ><span class="devsite-nav-text" tooltip>Learn about locations for products & resources</span></a></li><li class="devsite-nav-item devsite-nav-beta"><a href="/docs/projects/bigquery-export" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/bigquery-export" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/bigquery-export" ><span class="devsite-nav-text" tooltip>Export project data to BigQuery</span><span class="devsite-nav-icon material-icons" data-icon="beta" data-title="Beta" aria-hidden="true"></span></a></li><li class="devsite-nav-item"><a href="/docs/projects/manage-installations" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/manage-installations" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/manage-installations" ><span class="devsite-nav-text" tooltip>Manage Firebase installations</span></a></li><li class="devsite-nav-item devsite-nav-beta"><a href="/docs/projects/import-segments" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/import-segments" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/import-segments" ><span class="devsite-nav-text" tooltip>Import segments</span><span class="devsite-nav-icon material-icons" data-icon="beta" data-title="Beta" aria-hidden="true"></span></a></li><li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Manage projects programmatically</span> </div></li><li class="devsite-nav-item devsite-nav-beta"><a href="/docs/projects/api/workflow_set-up-and-manage-project" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/api/workflow_set-up-and-manage-project" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/api/workflow_set-up-and-manage-project" ><span class="devsite-nav-text" tooltip>Use the REST API</span><span class="devsite-nav-icon material-icons" data-icon="beta" data-title="Beta" aria-hidden="true"></span></a></li><li class="devsite-nav-item devsite-nav-beta"><a href="/docs/projects/terraform/get-started" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/terraform/get-started" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/terraform/get-started" ><span class="devsite-nav-text" tooltip>Use Terraform</span><span class="devsite-nav-icon material-icons" data-icon="beta" data-title="Beta" aria-hidden="true"></span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Use the Admin SDK</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/reference/admin/node/firebase-admin.project-management" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/reference/admin/node/firebase-admin.project-management" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/reference/admin/node/firebase-admin.project-management" ><span class="devsite-nav-text" tooltip>Node.js</span></a></li><li class="devsite-nav-item"><a href="/docs/reference/admin/java/reference/com/google/firebase/projectmanagement/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/reference/admin/java/reference/com/google/firebase/projectmanagement/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/reference/admin/java/reference/com/google/firebase/projectmanagement/package-summary" ><span class="devsite-nav-text" tooltip>Java</span></a></li><li class="devsite-nav-item"><a href="/docs/reference/admin/python/firebase_admin.project_management" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/reference/admin/python/firebase_admin.project_management" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/reference/admin/python/firebase_admin.project_management" ><span class="devsite-nav-text" tooltip>Python</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Manage project access (IAM)</span> </div></li><li class="devsite-nav-item"><a href="/docs/projects/iam/overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/iam/overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/iam/overview" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Roles</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/projects/iam/roles" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/iam/roles" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/iam/roles" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/docs/projects/iam/roles-basic" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/iam/roles-basic" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/iam/roles-basic" ><span class="devsite-nav-text" tooltip>Owner, Editor, Viewer roles</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Firebase predefined roles</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/projects/iam/roles-predefined" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/iam/roles-predefined" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/iam/roles-predefined" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/docs/projects/iam/roles-predefined-all-products" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/iam/roles-predefined-all-products" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/iam/roles-predefined-all-products" ><span class="devsite-nav-text" tooltip>Firebase-level roles</span></a></li><li class="devsite-nav-item"><a href="/docs/projects/iam/roles-predefined-category" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/iam/roles-predefined-category" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/iam/roles-predefined-category" ><span class="devsite-nav-text" tooltip>Product-category roles</span></a></li><li class="devsite-nav-item"><a href="/docs/projects/iam/roles-predefined-product" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/iam/roles-predefined-product" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/iam/roles-predefined-product" ><span class="devsite-nav-text" tooltip>Product-level roles</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/docs/projects/iam/roles-custom" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/iam/roles-custom" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/iam/roles-custom" ><span class="devsite-nav-text" tooltip>Custom roles</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/docs/projects/iam/permissions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/projects/iam/permissions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/projects/iam/permissions" ><span class="devsite-nav-text" tooltip>Permissions</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable devsite-nav-accordion"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Platforms and frameworks</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/libraries" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/libraries" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/libraries" ><span class="devsite-nav-text" tooltip>Supported platforms & frameworks</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Android</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/android/learn-more" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/android/learn-more" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/android/learn-more" ><span class="devsite-nav-text" tooltip>Understand Android + Firebase</span></a></li><li class="devsite-nav-item"><a href="/docs/android/kotlin-migration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/android/kotlin-migration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/android/kotlin-migration" ><span class="devsite-nav-text" tooltip>Migrate to KTX APIs in the main modules</span></a></li><li class="devsite-nav-item"><a href="/docs/android/android-play-services" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/android/android-play-services" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/android/android-play-services" ><span class="devsite-nav-text" tooltip>Dependencies of Firebase Android SDKs on Google Play services</span></a></li><li class="devsite-nav-item"><a href="/docs/android/play-data-disclosure" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/android/play-data-disclosure" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/android/play-data-disclosure" ><span class="devsite-nav-text" tooltip>Prepare for Google Play data disclosure requirements</span></a></li><li class="devsite-nav-item"><a href="/docs/android/troubleshooting-faq" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/android/troubleshooting-faq" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/android/troubleshooting-faq" ><span class="devsite-nav-text" tooltip>Troubleshooting & FAQ</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Flutter</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/flutter" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/flutter" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/flutter" ><span class="devsite-nav-text" tooltip>Discover Firebase for Flutter</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Apple platforms (iOS+)</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/ios/learn-more" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/ios/learn-more" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/ios/learn-more" ><span class="devsite-nav-text" tooltip>Understand Apple platforms + Firebase</span></a></li><li class="devsite-nav-item"><a href="/docs/ios/installation-methods" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/ios/installation-methods" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/ios/installation-methods" ><span class="devsite-nav-text" tooltip>Installation options</span></a></li><li class="devsite-nav-item"><a href="/docs/ios/swift-migration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/ios/swift-migration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/ios/swift-migration" ><span class="devsite-nav-text" tooltip>Migrate to Swift extension APIs in the main modules</span></a></li><li class="devsite-nav-item"><a href="/docs/ios/link-firebase-static-dynamic" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/ios/link-firebase-static-dynamic" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/ios/link-firebase-static-dynamic" ><span class="devsite-nav-text" tooltip>Link Firebase dependencies statically or dynamically</span></a></li><li class="devsite-nav-item"><a href="/docs/ios/app-store-data-collection" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/ios/app-store-data-collection" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/ios/app-store-data-collection" ><span class="devsite-nav-text" tooltip>Prepare for Apple App Store data disclosure requirements</span></a></li><li class="devsite-nav-item"><a href="/docs/ios/supporting-ios-14" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/ios/supporting-ios-14" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/ios/supporting-ios-14" ><span class="devsite-nav-text" tooltip>Supporting iOS 14</span></a></li><li class="devsite-nav-item"><a href="/docs/ios/troubleshooting-faq" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/ios/troubleshooting-faq" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/ios/troubleshooting-faq" ><span class="devsite-nav-text" tooltip>Troubleshooting & FAQ</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Web</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/web/learn-more" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/web/learn-more" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/web/learn-more" ><span class="devsite-nav-text" tooltip>Understand Web + Firebase</span></a></li><li class="devsite-nav-item"><a href="/docs/web/modular-upgrade" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/web/modular-upgrade" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/web/modular-upgrade" ><span class="devsite-nav-text" tooltip>Upgrade to the modular SDK</span></a></li><li class="devsite-nav-item"><a href="/docs/web/module-bundling" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/web/module-bundling" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/web/module-bundling" ><span class="devsite-nav-text" tooltip>Using module bundlers</span></a></li><li class="devsite-nav-item"><a href="/docs/web/alt-setup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/web/alt-setup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/web/alt-setup" ><span class="devsite-nav-text" tooltip>Web SDK setup alternatives</span></a></li><li class="devsite-nav-item"><a href="/docs/web/pwa" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/web/pwa" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/web/pwa" ><span class="devsite-nav-text" tooltip>Use Firebase in PWAs</span></a></li><li class="devsite-nav-item"><a href="/docs/web/best-practices" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/web/best-practices" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/web/best-practices" ><span class="devsite-nav-text" tooltip>Web SDK best practices</span></a></li><li class="devsite-nav-item"><a href="/docs/web/environments-js-sdk" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/web/environments-js-sdk" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/web/environments-js-sdk" ><span class="devsite-nav-text" tooltip>Supported environments for the Firebase JS SDK</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Unity</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/unity/learn-more" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/unity/learn-more" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/unity/learn-more" ><span class="devsite-nav-text" tooltip>Understand Unity + Firebase</span></a></li><li class="devsite-nav-item"><a href="/docs/unity/setup-alternative" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/unity/setup-alternative" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/unity/setup-alternative" ><span class="devsite-nav-text" tooltip>Additional installation options</span></a></li><li class="devsite-nav-item"><a href="/docs/android/integrate-play-games" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/android/integrate-play-games" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/android/integrate-play-games" ><span class="devsite-nav-text" tooltip>Integrate with your Play Games services project</span></a></li><li class="devsite-nav-item"><a href="/docs/unity/troubleshooting-faq" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/unity/troubleshooting-faq" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/unity/troubleshooting-faq" ><span class="devsite-nav-text" tooltip>Troubleshooting & FAQ</span></a></li><li class="devsite-nav-item"><a href="/docs/unity/build-debug-guide" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/unity/build-debug-guide" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/unity/build-debug-guide" ><span class="devsite-nav-text" tooltip>Debugging the game build, install, and run process</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>C++</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/cpp/learn-more" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/cpp/learn-more" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/cpp/learn-more" ><span class="devsite-nav-text" tooltip>Understand C++ + Firebase</span></a></li></ul></div></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable devsite-nav-accordion"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Prototype and test with Emulator Suite</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/emulator-suite" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/emulator-suite" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/emulator-suite" ><span class="devsite-nav-text" tooltip>Introduction</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Connect your app and prototype</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/emulator-suite/connect_and_prototype" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/emulator-suite/connect_and_prototype" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/emulator-suite/connect_and_prototype" ><span class="devsite-nav-text" tooltip>Get started</span></a></li><li class="devsite-nav-item"><a 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data-label="Book nav link, pathname: /docs/emulator-suite/connect_firestore" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/emulator-suite/connect_firestore" ><span class="devsite-nav-text" tooltip>Connect to the Firestore emulator</span></a></li><li class="devsite-nav-item"><a href="/docs/emulator-suite/connect_storage" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/emulator-suite/connect_storage" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/emulator-suite/connect_storage" ><span class="devsite-nav-text" tooltip>Connect to the Cloud Storage for Firebase emulator</span></a></li><li class="devsite-nav-item"><a href="/docs/emulator-suite/use_hosting" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/emulator-suite/use_hosting" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/emulator-suite/use_hosting" ><span class="devsite-nav-text" tooltip>Use the Hosting emulator</span></a></li><li class="devsite-nav-item"><a href="/docs/emulator-suite/use_app_hosting" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/emulator-suite/use_app_hosting" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/emulator-suite/use_app_hosting" ><span class="devsite-nav-text" tooltip>Use the App Hosting emulator</span></a></li><li class="devsite-nav-item devsite-nav-beta"><a href="/docs/emulator-suite/connect_functions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/emulator-suite/connect_functions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/emulator-suite/connect_functions" ><span class="devsite-nav-text" tooltip>Connect to the Cloud Functions emulator</span><span class="devsite-nav-icon material-icons" data-icon="beta" data-title="Beta" aria-hidden="true"></span></a></li><li class="devsite-nav-item devsite-nav-beta"><a href="/docs/emulator-suite/use_extensions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/emulator-suite/use_extensions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/emulator-suite/use_extensions" ><span class="devsite-nav-text" tooltip>Use the Extensions emulator</span><span class="devsite-nav-icon material-icons" data-icon="beta" data-title="Beta" aria-hidden="true"></span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/docs/emulator-suite/install_and_configure" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/emulator-suite/install_and_configure" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/emulator-suite/install_and_configure" ><span class="devsite-nav-text" tooltip>Install, configure and integrate</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable devsite-nav-accordion devsite-nav-new"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>AI assistance with Gemini in Firebase</span><span class="devsite-nav-icon material-icons" data-icon="new" data-title="New!" aria-hidden="true"></span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/gemini-in-firebase" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/gemini-in-firebase" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/gemini-in-firebase" ><span class="devsite-nav-text" tooltip>Introduction</span></a></li><li class="devsite-nav-item"><a href="/docs/gemini-in-firebase/set-up-gemini" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/gemini-in-firebase/set-up-gemini" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/gemini-in-firebase/set-up-gemini" ><span class="devsite-nav-text" tooltip>Set up Gemini in Firebase</span></a></li><li class="devsite-nav-item"><a href="/docs/gemini-in-firebase/try-gemini" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/gemini-in-firebase/try-gemini" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/gemini-in-firebase/try-gemini" ><span class="devsite-nav-text" tooltip>Try Gemini in the Firebase console</span></a></li></ul></div></li> </ul> <ul class="devsite-nav-list" menu="Build" aria-label="Side menu" hidden> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Build </span> </span> </li> <li class="devsite-nav-item"> <a href="/products-build" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Go to Build" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Go to Build </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Build Products </span> </span> </li> <li class="devsite-nav-item"> <a href="/products/app-check" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: App Check" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > App Check </span> </a> </li> <li class="devsite-nav-item"> <a href="/products/app-hosting" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: App Hosting" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > App Hosting </span> </a> </li> <li class="devsite-nav-item"> <a href="/products/auth" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Authentication" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Authentication </span> </a> </li> <li class="devsite-nav-item"> <a href="/products/functions" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Cloud Functions" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Cloud Functions </span> </a> </li> <li class="devsite-nav-item"> <a href="/products/storage" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Cloud Storage" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Cloud Storage </span> </a> </li> <li class="devsite-nav-item"> <a href="/products/data-connect" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Data Connect" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Data Connect </span> </a> </li> <li class="devsite-nav-item"> <a href="/products/extensions" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Extensions" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Extensions </span> </a> </li> <li class="devsite-nav-item"> <a href="/products/ml" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Firebase ML" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Firebase ML </span> </a> </li> <li class="devsite-nav-item"> <a href="/products/firestore" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Firestore" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Firestore </span> </a> </li> <li class="devsite-nav-item"> <a href="/products/genkit" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom 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class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Vertex AI in Firebase" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Vertex AI in Firebase </span> </a> </li> <li class="devsite-nav-item"> <a href="/products/generative-ai" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Generative AI" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Generative AI </span> </a> </li> </ul> <ul class="devsite-nav-list" menu="Run" aria-label="Side menu" hidden> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Run </span> </span> </li> <li class="devsite-nav-item"> <a href="/products-run" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Go to Run" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Go to Run </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Run Products </span> </span> </li> <li class="devsite-nav-item"> <a href="/products/ab-testing" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: A/B Testing" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > A/B Testing </span> </a> </li> <li class="devsite-nav-item"> <a href="/products/app-distribution" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: App Distribution" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > App Distribution </span> </a> </li> <li class="devsite-nav-item"> <a href="/products/cloud-messaging" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Cloud Messaging" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Cloud Messaging </span> </a> </li> <li class="devsite-nav-item"> <a href="/products/crashlytics" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Crashlytics" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Crashlytics </span> </a> </li> <li class="devsite-nav-item"> <a href="/products/analytics" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Google Analytics" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Google Analytics </span> </a> </li> <li class="devsite-nav-item"> <a href="/products/in-app-messaging" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: In-App Messaging" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > In-App Messaging </span> </a> </li> <li class="devsite-nav-item"> <a href="/products/performance" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Performance Monitoring" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Performance Monitoring </span> </a> </li> 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track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Overview </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/guides" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Fundamentals" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Fundamentals </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/build" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Build" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Build </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/run" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Run" 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aria-label="Side menu" hidden> <li class="devsite-nav-item"> <a href="/docs/ios/setup" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Add Firebase - Apple platforms (iOS+)" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Add Firebase - Apple platforms (iOS+) </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/android/setup" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Add Firebase - Android" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Add Firebase - Android </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/web/setup" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Add Firebase - Web" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Add Firebase - Web </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/flutter/setup" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Add Firebase - Flutter" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Add Firebase - Flutter </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/cpp/setup" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Add Firebase - C++" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Add Firebase - C++ </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/unity/setup" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Add Firebase - Unity" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Add Firebase - Unity </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/admin/setup" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Add Firebase - Server environments" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Add Firebase - Server environments </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/projects/learn-more" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Manage Firebase projects" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Manage Firebase projects </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/libraries" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Supported platforms & frameworks" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Supported platforms & frameworks </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/emulator-suite" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Use Emulator Suite" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Use Emulator Suite </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/gemini-in-firebase" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: AI assistance with Gemini in Firebase" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > AI assistance with Gemini in Firebase </span> </a> </li> </ul> <ul class="devsite-nav-list" menu="Build" aria-label="Side menu" hidden> <li class="devsite-nav-item"> <a href="/docs/emulator-suite" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Emulator Suite" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Emulator Suite </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/auth" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Authentication" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Authentication </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/app-check" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: App Check" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > App Check </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/data-connect" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Data Connect" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Data Connect </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/firestore" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Firestore" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Firestore </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/database" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Realtime Database" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Realtime Database </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/storage" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Storage" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Storage </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/rules" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Security Rules" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Security Rules </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/app-hosting" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: App Hosting" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > App Hosting </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/hosting" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Hosting" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Hosting </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/functions" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Cloud Functions" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Cloud Functions </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/extensions" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Extensions" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Extensions </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/vertex-ai" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Vertex AI in Firebase" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Vertex AI in Firebase </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/genkit" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Genkit" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Genkit </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/ml" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: ML" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > ML </span> </a> </li> </ul> <ul class="devsite-nav-list" menu="Run" aria-label="Side menu" hidden> <li class="devsite-nav-item"> <a href="/docs/test-lab" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Test Lab" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Test Lab </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/app-distribution" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: App Distribution" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > App Distribution </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/crashlytics" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Crashlytics" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Crashlytics </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/perf-mon" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Performance Monitoring" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Performance Monitoring </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/remote-config" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Remote Config" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Remote Config </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/ab-testing" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: A/B Testing" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > A/B Testing </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/analytics" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Analytics" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Analytics </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/cloud-messaging" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Cloud Messaging" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Cloud Messaging </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/in-app-messaging" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: In-App Messaging" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > In-App Messaging </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/dynamic-links" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Dynamic Links" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Dynamic Links </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/admob" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Google AdMob" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Google AdMob </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/ads" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Google Ads" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Google Ads </span> </a> </li> </ul> </div> </div> </nav> </devsite-book-nav> <section id="gc-wrapper"> <main role="main" id="main-content" class="devsite-main-content" has-book-nav > <devsite-content> <article class="devsite-article"><style> /* Styles inlined from /styles/docs.css */ .center { text-align: center } /* Used in AdMob code examples */ .oldcode { opacity: .40; /* IE 8 */ -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=40)"; filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=40); /* IE <= 7 */ filter:alpha(opacity=40); } .newcode { font-weight: bold; } /* Device Screenshots */ .deviceshot { max-width: 700px; max-height: 400px; } /* Start Changelog styles */ .badge { position: relative; top: -3px; border-radius: 16px; display: inline-block; width: 110px; height: 32px; line-height: 32px; margin-right: 10px; text-transform: uppercase; font-size: 13px; font-weight: 700; text-align: center; color: var(--tenant-inverted-text-color); } .checklist > ul { padding-left: 125px; } .checklist > ul > li { list-style-type: none; margin-bottom: 22px; } .changelog > ul { padding-left: 0; } .changelog > ul > li { list-style-type: none; margin-bottom: 22px; } .firebase-support-release-page .changelog > ul { list-style-type: none; padding-left: 125px; } .firebase-release-roundup .changelog > ul { list-style-type: disc outside; padding-left: 40px; } .firebase-release-roundup .changelog > ul > li { list-style-type: disc outside; margin-bottom: 12px; } .generic-android::before, .generic-ios::before, .generic-mobile::before, .generic-web::before, .generic-flutter::before, .generic-unity::before, .generic-cpp::before, .generic-all::before, .release-changed::before, .release-deprecated::before, .release-feature::before, .release-fixed::before, .release-important::before, .release-issue::before, .release-removed::before, .release-unchanged::before, .release-android::before, .release-android-bom::before, .release-ios::before, .release-javascript::before, .release-flutter::before, .release-unity::before, .release-cpp::before, .release-admin::before, .release-functions::before, .release-cli::before, .release-rules::before { display: block; float: left; width: 110px; height: 32px; margin-left: -125px; margin-right: 10px; border-radius: 16px; text-transform: uppercase; font-size: 13px; font-weight: 700; text-align: center; color: var(--tenant-inverted-text-color); } .generic-android::before { content: "Android"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #839e2e; } .generic-ios::before { text-transform: none; content: "iOS+"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #003fdd; } .generic-mobile::before { content: "Mobile"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #f4b400; } .generic-web::before { content: "Web"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #7e57c2; } .generic-flutter::before { content: "Flutter"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #29b6f6; } .generic-unity::before { content: "Unity"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #7f6545; } .generic-cpp::before { content: "C++"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #ff8c00; } .generic-all::before { content: "All"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #ccc; } .release-changed::before { content: "changed"; background-color: #ff6961; padding-top: 4px; } .release-deprecated::before { content: "deprecated"; background-color: #d70015; padding-top: 4px; } .release-feature::before { content: "feature"; background-color: #0f9d58; padding-top: 4px; } .release-fixed::before { content: "fixed"; background-color: #4285f4; padding-top: 4px; } .release-important::before { content: "important"; background-color: #d70015; padding-top: 4px; } .release-issue::before { content: "issue"; background-color: #d70015; padding-top: 4px; } .release-removed::before { content: "removed"; background-color: #546e7a; padding-top: 4px; } .release-unchanged::before { content: "no change"; background-color: #ccc; padding-top: 4px; } .release-android::before { content: "Android"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #839e2e; } .release-android-bom::before { content: "Android BoM"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #839e2e; } .release-ios::before { text-transform: none; content: "iOS+"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #003fdd; } .release-javascript::before { content: "JavaScript"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #7e57c2; } .release-flutter::before { content: "Flutter"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #29b6f6; } .release-unity::before { content: "Unity"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #7f6545; } .release-cpp::before { content: "C++"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #ff8c00; } .release-admin::before { content: "Admin"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #909090; } .release-functions::before { content: "Functions"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #2c384a; } .release-cli::before { text-transform: none; content: "CLI"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #f4b400; } .release-rules::before { content: "Rules"; color: var(--tenant-secondary-text-color); border: 5px solid; border-color: #002991; } /* End Changelog styles */ /* Docs Overview page styles */ .docs-android, .docs-ios, .docs-web, .docs-cpp, .docs-unity { height: 64px; width: 64px; margin: 10px 16px 0 -16px; } .firebase-docs-overview .devsite-landing-row h2 { margin: 80px 0 -40px; } .devsite-landing-row-3-up .docs-landing-row-item { width: calc((100% - 80px)/2); display: inline-block; } .docs-landing-icon { font-size: 48px; height: 48px; margin: 11px; width: 48px; } .firebase-reference-list { display: -ms-flex; display: flex; -ms-flex-wrap: wrap; flex-wrap: wrap; list-style: none; margin: 0 0 40px; padding: 0; } .firebase-reference-list-item { -ms-flex: 0 0 50%; flex: 0 0 50%; margin: 40px 0 0; padding: 0; } .firebase-reference-list-item > a { -ms-flex-align: center; align-items: center; display: -ms-flex; display: flex; } .firebase-reference-list-item > a:not(:hover) h3 { color: var(--tenant-primary-text-color); } .firebase-reference-list-item > a:not(:hover) li, .firebase-reference-list-item > a:not(:hover) p { color: var(--tenant-secondary-text-color); } .firebase-reference-list-item .docs-landing-icon { -ms-flex-align: center; align-items: center; background-color: var(--tenant-docs-landing-icon-background, #f5f5f5); border-radius: 50%; -ms-flex: 0 0 88px; flex: 0 0 88px; height: 88px; -ms-justify-content: center; justify-content: center; margin: 0 16px 0 0; padding: 20px; } .firebase-reference-list-item h3 { -ms-flex: 0 0 auto; flex: 0 0 auto; font-size: 18px; line-height: 28px; margin: 0; } .firebase-reference-list-item ul { list-style: none; padding: 0; } .docs-android, .docs-ios, .docs-web, .docs-cpp, .docs-unity { height: 88px; width: auto; } .firebase-reference-list-item.docs-android .docs-landing-icon { color: #00bfa5; } .firebase-reference-list-item.docs-cpp .docs-landing-icon { color: #fd8c09; } .firebase-reference-list-item.docs-ios .docs-landing-icon { color: #16aaca; } .firebase-reference-list-item.docs-unity .docs-landing-icon { color: #000; } .firebase-reference-list-item.docs-web .docs-landing-icon { color: #c52062; } .firebase-reference-list-item.docs-http .docs-landing-icon { color: #3f51b5; } @media (max-width: 1000px) { .firebase-reference-list { -ms-flex-direction: column; flex-direction: column; } } /* end Docs Overview page styles */ /* Full-page platform selector for Crashlytics docs */ /* Note: h3 in selector 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version="t-devsite-webserver-20250211-r00-rc00.466928320959134316" data-label="Send Feedback Button" track-type="feedback" track-name="sendFeedbackLink" track-metadata-position="header" class="nocontent" project-feedback-url="https://firebase.google.com/support/contact/bugs-features/" project-icon="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/firebase/images/touchicon-180.png" project-support-url="https://firebase.google.com/support/contact" > <button> Send feedback </button> </devsite-feedback> <h1 class="devsite-page-title" tabindex="-1"> Understand Firebase for Android </h1> <devsite-feature-tooltip ack-key="AckCollectionsBookmarkTooltipDismiss" analytics-category="Site-Wide Custom Events" analytics-action-show="Callout Profile displayed" analytics-action-close="Callout Profile dismissed" analytics-label="Create Collection Callout" class="devsite-page-bookmark-tooltip nocontent" dismiss-button="true" id="devsite-collections-dropdown" dismiss-button-text="Dismiss" close-button-text="Got it"> <devsite-bookmark></devsite-bookmark> <span slot="popout-heading"> Stay organized with collections </span> <span slot="popout-contents"> Save and categorize content based on your preferences. </span> </devsite-feature-tooltip> <div class="devsite-page-title-meta"><devsite-view-release-notes></devsite-view-release-notes></div> <devsite-toc class="devsite-nav" depth="2" devsite-toc-embedded > </devsite-toc> <div class="devsite-article-body clearfix "> <p></p> <p>As you're developing your Android project using Firebase, you might discover concepts that are unfamiliar or specific to Firebase. This page aims to answer those questions or point you to resources to learn more.</p> <p>If you have questions about a topic not covered on this page, feel free to visit one of our <a href="/community#join-the-discussion">online communities</a>. We'll also update this page with new topics periodically, so check back to see if we've added the topic you want to learn about!</p> <h2 id="firebase-assistant" data-text="Firebase Assistant plugin for Android Studio" tabindex="-1">Firebase Assistant plugin for Android Studio</h2> <p>The Firebase Assistant is an Android Studio plugin that registers your Android app with a Firebase project and adds the necessary Firebase config files, plugins, and dependencies to your Android project — all from within Android Studio!</p> <p>Follow the instructions in the <a href="/docs/android/setup#assistant">Android getting started page</a> to use the Firebase Assistant. Make sure that you're using the most up-to-date versions of both Android Studio and the Firebase Assistant (go to <strong>File > Check for updates</strong>).</p> <p>When you select specific Firebase products to add to your app, the Firebase Assistant automatically declares the required dependencies in your <code translate="no" dir="ltr">app/build.gradle</code> file. However, to use Firebase features that are beyond the current capabilities of the Firebase Assistant, you may want to make some manual changes to these dependencies:</p> <ul> <li><p>If you want to use the <a href="#bom"><span class="notranslate">Firebase Android BoM</span></a>, update the dependencies in your <strong>module (app-level) Gradle file</strong> (usually <code translate="no" dir="ltr">app/build.gradle</code>) to import the <span class="notranslate">BoM</span> platform. You'll also need to remove the versions from each Firebase library dependency line.</p></li> <li><p>If you want to use a <a href="#ktx">Kotlin extensions library</a>, modify the dependency line added to your <strong>module (app-level) Gradle file</strong> (usually <code translate="no" dir="ltr">app/build.gradle</code>) to use the <code translate="no" dir="ltr">ktx</code> version of the Firebase library instead.</p></li> </ul> <h2 id="google-services-plugin-and-file" data-text="Google services — plugin and config file" tabindex="-1">Google services — plugin and config file</h2> <p>As part of adding Firebase to your Android project, you need to add the <code translate="no" dir="ltr">google-services</code> plugin and a <code translate="no" dir="ltr"><nobr>google-services.json</nobr></code> configuration file to your project.</p> <p>If you add Firebase to your Android project via the <a href="/docs/android/setup#console"><span class="notranslate">Firebase</span> console</a>, the <a href="/docs/projects/api/workflow_set-up-and-manage-project?platform=android#add-apps">Management REST API</a>, or the <a href="/docs/cli#management-commands"><span class="notranslate">Firebase</span> CLI</a>, you must manually add the plugin and config file to your project. However, if you use the <a href="#firebase-assistant">Firebase Assistant</a>, these tasks are automatically done for you during setup.</p> <aside class="note"><strong>Note:</strong><span> The <code translate="no" dir="ltr"><nobr>google-services.json</nobr></code> config file contains unique, but non-secret identifiers for your project. To learn more about this config file, visit <a href="/docs/projects/learn-more">Understand Firebase Projects</a>.</span></aside> <p>Visit the <a href="//developers.google.com/android/guides/google-services-plugin" class="external">Android documentation</a> to learn about how the Google services plugin and config file work together.</p> <h2 id="bom" data-text="Firebase Android BoM (Bill of Materials)" tabindex="-1"><span class="notranslate">Firebase Android BoM</span> (<span class="notranslate">Bill of Materials</span>)</h2> <p>The <span class="notranslate">Firebase Android BoM</span> (<span class="notranslate">Bill of Materials</span>) enables you to manage all your Firebase library versions by specifying only one version — the <span class="notranslate">BoM</span>'s version.</p> <p>When you use the <span class="notranslate">Firebase BoM</span> in your app, the <span class="notranslate">BoM</span> automatically pulls in the individual library versions mapped to <span class="notranslate">BoM</span>'s version. <strong>All the individual library versions will be compatible.</strong> When you update the <span class="notranslate">BoM</span>'s version in your app, all the Firebase libraries that you use in your app will update to the versions mapped to that <span class="notranslate">BoM</span> version.</p> <p>To learn which Firebase library versions are mapped to a specific <span class="notranslate">BoM</span> version, check out the <a href="/support/release-notes/android">release notes</a> for that <span class="notranslate">BoM</span> version. If you need to compare the library versions mapped to one <span class="notranslate">BoM</span> version compared to another <span class="notranslate">BoM</span> version, use the <a href="#compare-bom-versions">comparison widget</a> below.</p> <p>Learn more about <a href="//docs.gradle.org/4.6-rc-1/userguide/managing_transitive_dependencies.html#sec:bom_import" class="external">Gradle's support for <span class="notranslate">BoM</span> platforms</a>.</p> <p>Here's how to use the <span class="notranslate">Firebase Android BoM</span> to declare dependencies in your <strong>module (app-level) Gradle file</strong> (usually <code translate="no" dir="ltr">app/build.gradle</code>). When using the <span class="notranslate">BoM</span>, you don't specify individual library versions in the dependency lines.</p> <div></div><devsite-code><pre class="devsite-click-to-copy devsite-code-highlight" translate="no" dir="ltr" is-upgraded syntax="Carbon"><span class="devsite-syntax-nx">dependencies</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><strong><span class="devsite-syntax-c1">// Import the <span class="notranslate">BoM</span> for the Firebase platform</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">platform</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-nx">com</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">google</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">bom</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-m devsite-syntax-m-Double">33.9.0</span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-p">)</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Declare the dependencies for the desired Firebase products without specifying versions</span></strong> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// For example, declare the dependencies for <span class="notranslate">Firebase Authentication</span> and <span class="notranslate">Cloud Firestore</span></span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-nx">com</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">google</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">auth</span><span class="devsite-syntax-err">'</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-nx">com</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">google</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">firestore</span><span class="devsite-syntax-err">'</span> <span class="devsite-syntax-p">}</span></pre></devsite-code> <p>Here are some frequently asked questions about using the <span class="notranslate">Firebase Android BoM</span>:</p> <p><section class="expandable" id="bom-override-version"> <p class="showalways"> How do I use a <em>different</em> library version than what's designated in the <span class="notranslate">BoM</span>? </p></p> <aside class="note"><b>Important: </b>If you use more than one Firebase library in your app, specifying a different version than what's designated in the <span class="notranslate">BoM</span> is not recommended. The specified version may not be compatible with other Firebase library versions. </aside> <p>Here's how to override a library version designated in the <span class="notranslate">BoM</span>:</p> <ol> <li><p>Maintain the line to import the <span class="notranslate">BoM</span> platform.</p></li> <li><p>In the library's dependency line, specify the desired library version. For example, here's how to declare dependencies if you want to use v18.0.0 of <span class="notranslate">App Indexing</span> no matter what version is designated in the <span class="notranslate">BoM</span>, <em><strong>but</strong></em> you want to use the <span class="notranslate">BoM</span>'s versions for <span class="notranslate">Authentication</span> and <span class="notranslate">Cloud Firestore</span>:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded syntax="Carbon"><span class="devsite-syntax-nx">dependencies</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Import the <span class="notranslate">BoM</span> for the Firebase platform</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">platform</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-nx">com</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">google</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">bom</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-m devsite-syntax-m-Double">33.9.0</span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-p">)</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Declare the dependency for the <span class="notranslate">App Indexing</span> library and specify a version</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// This specified library version overrides the version designated in the <span class="notranslate">BoM</span>.</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-nx">com</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">google</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">appindexing</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-m devsite-syntax-m-Double">18.0.0</span><span class="devsite-syntax-err">'</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Declare the dependencies for the other Firebase libraries without specifying versions</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// These libraries will use the versions designated in the <span class="notranslate">BoM</span>.</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-nx">com</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">google</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">auth</span><span class="devsite-syntax-err">'</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-nx">com</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">google</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">firestore</span><span class="devsite-syntax-err">'</span> <span class="devsite-syntax-p">}</span></pre></devsite-code></li> </ol> <p></section></p> <p><section class="expandable" id="bom-auto-add-libraries"> <p class="showalways"> Does the <span class="notranslate">BoM</span> automatically add all the Firebase libraries to my app? </p></p> <p>No. To actually add and use Firebase libraries in your app, you must declare each library as a separate dependency line in your <strong>module (app-level) Gradle file</strong> (usually <code translate="no" dir="ltr">app/build.gradle</code>).</p> <p>Using the <span class="notranslate">BoM</span> ensures that the <em>versions</em> of any Firebase libraries in your app are compatible, but the <span class="notranslate">BoM</span> doesn't actually <em>add</em> those Firebase libraries to your app.</p> <p></section></p> <p><section class="expandable" id="bom-support-for-ktx"> <p class="showalways"> Are the Firebase Kotlin extensions (KTX) libraries supported by the <span class="notranslate">BoM</span>? </p></p> <p>Yes! When you declare your specific Firebase library dependency lines, just use the KTX library name, like so:</p> <div></div><devsite-code><pre class="devsite-click-to-copy devsite-code-highlight" translate="no" dir="ltr" is-upgraded syntax="Carbon"><span class="devsite-syntax-nx">dependencies</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><strong><span class="devsite-syntax-c1">// Import the <span class="notranslate">BoM</span> for the Firebase platform</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">platform</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-nx">com</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">google</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">bom</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-m devsite-syntax-m-Double">33.9.0</span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-p">)</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Declare the dependencies for the desired Firebase products, without specifying versions</span></strong> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// For example, declare the dependencies for <span class="notranslate">Firebase Authentication</span> and <span class="notranslate">Cloud Firestore</span></span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-nx">com</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">google</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">auth</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">ktx</span><span class="devsite-syntax-err">'</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-nx">com</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">google</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">firestore</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">ktx</span><span class="devsite-syntax-err">'</span> <span class="devsite-syntax-p">}</span></pre></devsite-code> <p></section></p> <p><section class="expandable" id="bom-support-for-nonfirebase-libraries"> <p class="showalways"> Can I use the <span class="notranslate">BoM</span> to add Android libraries that are <em>not</em> from Firebase? </p></p> <p>No. The <span class="notranslate">Firebase Android BoM</span> only manages library versions for Firebase libraries. The only exception is the inclusion of the <span class="notranslate">Google Mobile Ads</span> SDK because it's so commonly used in Firebase apps.</p> <p></section></p> <p><section class="expandable" id="bom-why-recommended"> <p class="showalways"> Why is the <span class="notranslate">BoM</span> the recommended way to manage Firebase library versions? </p></p> <p>Even though each Firebase library is versioned independently, they are built together to ensure that the latest release of each library is compatible with the others.</p> <p>By using the <span class="notranslate">BoM</span> to manage your app's Firebase library versions, you don't need to track which version of a Firebase library is compatible with another Firebase library.</p> <p>Even if you only use one Firebase library in your app right now, we still recommend using the <span class="notranslate">BoM</span> because you never know when you might want to use another Firebase library!</p> <p></section></p> <p><section class="expandable" id="bom-gradle-earlier-than-v5"> <p class="showalways"> My app uses a Gradle version <em>earlier than 5.0</em> — can I still use the <span class="notranslate">BoM</span>? </p></p> <p>Yes, you can still use the <span class="notranslate">BoM</span>! For Gradle 5.0 and later, <span class="notranslate">BoM</span> support is automatically enabled. However, <strong>for earlier versions of Gradle,</strong> you just need to <a href="//docs.gradle.org/4.6-rc-1/release-notes.html" class="external">enable the <span class="notranslate">BoM</span> feature</a> and import the <span class="notranslate">BoM</span> a bit differently.</p> <ol> <li><p>To your <code translate="no" dir="ltr">settings.gradle</code> file, add <code translate="no" dir="ltr">enableFeaturePreview('IMPROVED_POM_SUPPORT')</code>.</p></li> <li><p>To your <strong>module (app-level) Gradle file</strong> (usually <code translate="no" dir="ltr">app/build.gradle</code>), import the <span class="notranslate">BoM</span> like a normal library (without the <code translate="no" dir="ltr">platform</code> modifier), like so:</p> <div></div><devsite-code><pre class="devsite-click-to-copy devsite-code-highlight" translate="no" dir="ltr" is-upgraded syntax="Carbon"><span class="devsite-syntax-nx">dependencies</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><strong><span class="devsite-syntax-c1">// Import the <span class="notranslate">Firebase BoM</span></span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-nx">com</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">google</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">bom</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-m devsite-syntax-m-Double">33.9.0</span><span class="devsite-syntax-err">'</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Declare the dependencies for the desired Firebase products, without specifying versions</span></strong> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// For example, declare the dependencies for <span class="notranslate">Firebase Authentication</span> and <span class="notranslate">Cloud Firestore</span></span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-nx">com</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">google</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">auth</span><span class="devsite-syntax-err">'</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-nx">com</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">google</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">firestore</span><span class="devsite-syntax-err">'</span> <span class="devsite-syntax-p">}</span></pre></devsite-code></li> </ol> <p></section></p> <p><section class="expandable" id="bom-report-issues-feedback"> <p class="showalways"> How do I report an issue or offer feedback on the <span class="notranslate">BoM</span>? </p></p> <p>Visit the <a href="//github.com/firebase/firebase-android-sdk/issues" class="external">Firebase Android SDK repo on GitHub</a>.</p> <p></section></p> <h4 class="showalways" id="compare-bom-versions" data-text=" Compare Firebase BoM versions " tabindex="-1"> Compare <span class="notranslate">Firebase BoM</span> versions </h4> <devsite-iframe><iframe src="https://firebase.google.com/frame/docs/android/learn-more_3db40c83baac740808bcda9748085e5ac5987adbf452e0f44f2ba8b3356e2fb8.frame" class="framebox inherit-locale " allow="clipboard-write https://firebase-dot-devsite-v2-prod.appspot.com" allowfullscreen is-upgraded></iframe></devsite-iframe> <h2 id="ktx" data-text="Kotlin extensions (KTX) library modules" tabindex="-1">Kotlin extensions (KTX) library modules</h2> <aside class="warning"> <p>The Kotlin extensions (KTX) APIs have been added to their respective main modules. For example, all the APIs from <code translate="no" dir="ltr">firebase-perf-ktx</code> have been added to <code translate="no" dir="ltr">firebase-perf</code> under the <code translate="no" dir="ltr">com.google.firebase.perf</code> package. </p> <p><strong>This change means that Kotlin developers should now depend on the main modules instead of the KTX modules</strong> (when using <a href="/support/release-notes/android#bom_v32-5-0"><span class="notranslate">Firebase BoM</span> v32.5.0+</a> or main module versions listed in <span class="notranslate">BoM</span> v32.5.0+). </p> <p>As part of this change, the KTX APIs in every KTX module are now deprecated. As early as September 2024, we'll no longer release KTX modules, and we'll also remove the KTX libraries from the <span class="notranslate">Firebase Android BoM</span> at that time. </p> <p>If you use KTX APIs from the KTX modules, we recommend that you <strong><em>migrate your app to use KTX APIs from the main modules instead</em></strong>. For details, see the <a href="/docs/android/kotlin-migration">FAQ about this initiative</a>. </p> </aside> <p>Firebase Kotlin extensions (KTX) library modules are small companions to the main Firebase library modules, and you can use them to write beautiful and idiomatic Kotlin code.</p> <p>To use a KTX library module in your app, change your dependency to include the <code translate="no" dir="ltr">-ktx</code> suffix. Each KTX module automatically has a dependency on the main library module, so there's no need to include both dependencies in your app.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded syntax="Carbon"><span class="devsite-syntax-nx">dependencies</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Import the <span class="notranslate">BoM</span> for the Firebase platform (<a href="/docs/android/learn-more#bom">learn more</a>)</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">platform</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-nx">com</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">google</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">bom</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-m devsite-syntax-m-Double">33.9.0</span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-p">)</span> <strike><span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Declare the main module</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-nx">com</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">google</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">analytics</span><span class="devsite-syntax-err">'</span></strike> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Declare the KTX module instead (which automatically has a dependency on the main module)</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nx">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-err">'</span><span class="devsite-syntax-nx">com</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">google</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-nx">firebase</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">analytics</span><span class="devsite-syntax-o">-</span><span class="devsite-syntax-nx">ktx</span><span class="devsite-syntax-err">'</span> <span class="devsite-syntax-p">}</span></pre></devsite-code> <p>Each KTX module provides different syntactic extensions of the main module. For example, the <span class="notranslate">Analytics</span> KTX module makes it simpler to log events:</p> <p><strong>Before</strong> (using the main module)</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded syntax="scdoc">val analytics = FirebaseAnalytics.getInstance(); val bundle = Bundle(); bundle.putString(FirebaseAnalytics.Param.ITEM_ID, id); bundle.putString(FirebaseAnalytics.Param.ITEM_NAME, name); bundle.putString(FirebaseAnalytics.Param.CONTENT_TYPE, "image"); analytics.logEvent(FirebaseAnalytics.Event.SELECT_ITEM, bundle);</pre></devsite-code> <p><strong>After</strong> (using the KTX module instead)</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" data-code-snippet="true" data-github-path="firebase/snippets-android/analytics/app/src/main/java/com/google/firebase/example/analytics/kotlin/MainActivity.kt" data-region-tag="image_view_event" is-upgraded syntax="Kotlin"><span class="devsite-syntax-n">firebaseAnalytics</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">logEvent</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">FirebaseAnalytics</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">Event</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">SELECT_ITEM</span><span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">param</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">FirebaseAnalytics</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">Param</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">ITEM_ID</span><span class="devsite-syntax-p">,</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">id</span><span class="devsite-syntax-p">)</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">param</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">FirebaseAnalytics</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">Param</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">ITEM_NAME</span><span class="devsite-syntax-p">,</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">name</span><span class="devsite-syntax-p">)</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">param</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">FirebaseAnalytics</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">Param</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">CONTENT_TYPE</span><span class="devsite-syntax-p">,</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-s">"image"</span><span class="devsite-syntax-p">)</span> <span class="devsite-syntax-p">}</span><div class="devsite-github-link nocode no-select"><a target="_top" href="https://github.com/firebase/snippets-android/blob/90d99933a308e9ec8dd5cb0f164a3640e5331f09/analytics/app/src/main/java/com/google/firebase/example/analytics/kotlin/MainActivity.kt#L237-L241" class="gc-analytics-event" data-category="github_link" data-label="firebase/snippets-android/analytics/app/src/main/java/com/google/firebase/example/analytics/kotlin/MainActivity.kt#image_view_event" ><span class="devsite-syntax-n">MainActivity</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">kt</span></a></div></pre></devsite-code> <p>All the Firebase products offer a <a href="/support/release-notes/android#latest_sdk_versions">KTX module</a> except for <span class="notranslate">Firebase ML</span> and <span class="notranslate">App Indexing</span>.</p> <p>If you haven't yet, check out the <a href="/docs/reference/kotlin/packages">API reference docs</a> for the KTX modules.</p> <h2 id="dynamic-feature-modules" data-text="Feature modules and Play Feature Delivery" tabindex="-1">Feature modules and Play Feature Delivery</h2> <p>As of May 2021 (<span class="notranslate">Firebase BoM</span> v28.0.0), Firebase Android SDKs can be used in dynamic feature modules which are installed separately from your base application module.</p> <p>To enable support for dynamic feature modules, add the following dependency to your <strong>base</strong> module's <code translate="no" dir="ltr">build.gradle</code> file:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded syntax="Groovy"><code translate="no" dir="ltr"><span class="devsite-syntax-n">dependencies</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">implementation</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-s1">'com.google.firebase:firebase-dynamic-module-support:16.0.0-beta03'</span> <span class="devsite-syntax-o">}</span> </code></pre></devsite-code> <p>Now that you've added dynamic module support, you can add Firebase SDK dependencies (with or without the <span class="notranslate">Firebase BoM</span>) to feature modules of your app and use them as you normally would.</p> <p>For example, if your application uses <span class="notranslate">Realtime Database</span> to power a specific realtime feature you could add the <code translate="no" dir="ltr">firebase-database</code> dependency to the <code translate="no" dir="ltr">build.gradle</code> of the feature module rather than the base module. This will reduce download size for most users.</p> <p>Be aware of the following caveats when using Firebase SDKs in feature modules:</p> <ul> <li><p>Products such as <span class="notranslate">Dynamic Links</span> or <span class="notranslate">Firebase In-App Messaging</span> which rely on the <span class="notranslate">Analytics</span> <code translate="no" dir="ltr">first_open</code> event may miss this event when used in a dynamic feature module.</p></li> <li><p>When using <span class="notranslate">Cloud Firestore</span> and <span class="notranslate">Authentication</span> together, you should always include them both in the same module. If this is not possible, then make sure that <span class="notranslate">Authentication</span> is loaded <em>before</em> <span class="notranslate">Cloud Firestore</span>; otherwise, some <span class="notranslate">Cloud Firestore</span> operations may have an incorrect authentication state.</p></li> <li><p>When using <code translate="no" dir="ltr">firebase-crashlytics-ndk</code> as a dependency of a dynamic feature module, you need to set the <code translate="no" dir="ltr">unstrippedNativeLibsDir</code> property in your app's <code translate="no" dir="ltr">build.gradle</code> file, as described in the <a href="/docs/crashlytics/ndk-reports#upload-external-dependencies"><span class="notranslate">Crashlytics</span> NDK documentation</a>.</p></li> </ul> <p>For more information on feature modules and Play Feature Delivery, visit <a href="https://developer.android.com/guide/playcore/feature-delivery" class="external">Overview of Play Feature Delivery</a>.</p> <h2 id="plugin-vs-google-services-vs-google-play" data-text="Google services Gradle plugin vs Google Play services vs Google Play Store" tabindex="-1">Google services Gradle plugin vs Google Play services vs Google Play Store</h2> <p>Several pieces of the Google, Firebase, and Android ecosystem have similar naming conventions. Here's a brief explanation for each:</p> <dl> <dt>Google services Gradle plugin</dt> <dd>A Gradle plugin (<code translate="no" dir="ltr">com.google.gms.google-services</code>) that runs at build time to ensure that your app has the right configuration to access Firebase and Google APIs</dd> <dd>Despite its name, this plugin has no relation to Google Play services (see next entry) and has no impact on your app's capabilities at runtime.</dd> <dd>This plugin also processes the <code translate="no" dir="ltr">google-services.json</code> file that you add to your app as part of setting up Firebase. Learn more about the <a href="/docs/android/learn-more#google-services-plugin-and-file">Google services Gradle plugin</a>.</dd> <dt>Google Play services</dt> <dd>An invisible background service that runs on an Android device and provides several common Google APIs (like Google Maps and Google Sign In) to apps on the device</dd> <dd>By centralizing these common APIs into a single service, it reduces the size of other apps and allows a device to receive automatic security updates and feature enhancements without an OS update. Learn more about <a href="//developers.google.com/android/guides/overview" class="external">Google Play services</a>.</dd> <dt>Google Play Store</dt> <dd>A store to download apps, movies, books, and more on an Android device</dd> <dd>As a developer, you manage the distribution, releases, etc. for your app via the Google Play Console. If a device has the Google Play Store, it's also running Google Play services (see previous entry). Learn more about the <a href="//developer.android.com/distribute" class="external">Google Play Store for developers</a>.</dd> <dt>Google Play Games services</dt> <dd>A set of APIs for mobile game developers</dd> <dd>Learn more about <a href="//developers.google.com/games/services" class="external">Google Play Games services</a> and how to <a href="//firebase.google.com/support/guides/integrate-play-games" class="external">integrate Firebase with your Google Play Games services project</a>.</dd> </dl> <h2 id="open-source" data-text="Open source resources for Firebase Android SDKs" tabindex="-1">Open source resources for Firebase Android SDKs</h2> <p>Firebase supports open source development, and we encourage community contributions and feedback.</p> <h3 id="open-source-sdks" data-text="Firebase Android SDKs" tabindex="-1">Firebase Android SDKs</h3> <p>Most Firebase Android SDKs are developed as open source libraries in our public <a href="//github.com/firebase/firebase-android-sdk" class="external">Firebase GitHub repository</a>. We're actively working to move the remaining privately developed Firebase libraries to our public GitHub soon!</p> <h3 id="open-source-quickstarts" data-text="Quickstart samples" tabindex="-1">Quickstart samples</h3> <p>Firebase maintains a collection of quickstart samples for most Firebase APIs on Android. Find these quickstarts in our public <a href="//github.com/firebase/quickstart-android" class="external">Firebase GitHub quickstart repository</a>.</p> <p>You can open each quickstart as an Android Studio project, then run them on a mobile device or a virtual device (AVD). Or you can use these quickstarts as example code for using Firebase SDKs.</p> <h2 id="other-topics" data-text="Other topics of interest" tabindex="-1">Other topics of interest</h2> <ul> <li><a href="/docs/android/android-play-services">Dependencies of Firebase Android SDKs on Google Play services</a></li> <li><a href="//support.google.com/firebase/answer/6392038" class="external">Link your Firebase app to Google Play</a> </li> <li><a href="/support/guides/integrate-play-games">Integrate with your Play Games services project</a></li> </ul> <devsite-hats-survey class="nocontent" hats-id="Eo9GZTcG10ncf3CThQj0SEgFWynR" listnr-id="5244646"></devsite-hats-survey> </div> <devsite-thumb-rating position="footer"> </devsite-thumb-rating> <devsite-feedback position="footer" project-name="Firebase for Android" product-id="719752" bucket="" context="" version="t-devsite-webserver-20250211-r00-rc00.466928320959134316" data-label="Send Feedback Button" track-type="feedback" track-name="sendFeedbackLink" track-metadata-position="footer" class="nocontent" project-feedback-url="https://firebase.google.com/support/contact/bugs-features/" project-icon="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/firebase/images/touchicon-180.png" project-support-url="https://firebase.google.com/support/contact" > <button> Send feedback </button> </devsite-feedback> <div class="devsite-floating-action-buttons"> </div> </article> <devsite-content-footer class="nocontent"> <p>Except as otherwise noted, the content of this page is licensed under the <a href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 License</a>, and code samples are licensed under the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache 2.0 License</a>. 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