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Add achievements and leaderboards to your mobile game | Flutter

<!doctype html><html lang="en"><head><meta charset="utf-8"><title>Add achievements and leaderboards to your mobile game | Flutter</title><link rel="icon" href="/assets/images/branding/flutter/icon/64.png" eleventy:ignore><link rel="apple-touch-icon" href="/assets/images/branding/flutter/logo/flutter-logomark-320px.png" eleventy:ignore><meta name="viewport" content="width=device-width,initial-scale=1"><meta name="theme-color" content="#ffffff"><link rel="preconnect" href="https://fonts.googleapis.com"><link rel="preconnect" href="https://fonts.gstatic.com" crossorigin><meta name="google-site-verification" content="HFqxhSbf9YA_0rBglNLzDiWnrHiK_w4cqDh2YD2GEY4"><script>!function(e,t,a,n){e[n]=e[n]||[],e[n].push({"gtm.start":(new Date).getTime(),event:"gtm.js"});var 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data-toggle="collapse" data-target="#header-sidenav-5-2" href="#header-sidenav-5-2" role="button" aria-expanded="false" aria-controls="header-sidenav-5-2">Firebase & Firestore</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-5-2"><li class="nav-item"><a class="nav-link" href="/data-and-backend/firebase">Overview</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/docs/flutter" target="_blank" rel="noopener">Discover Firebase for Flutter</a></li><li class="nav-item"><a class="nav-link" href="https://www.youtube.com/watch?v=wUSkeTaBonA" target="_blank" rel="noopener">Get to know Firebase for Flutter</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/codelabs/firebase-auth-in-flutter-apps" target="_blank" rel="noopener">Add a user authentication flow to a Flutter app using FirebaseUI</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/codelabs/firebase-get-to-know-web" target="_blank" rel="noopener">Get to know Firebase for web</a></li></ul></li><li class="nav-item"><a class="nav-link active collapsible" data-toggle="collapse" data-target="#header-sidenav-5-3" href="#header-sidenav-5-3" role="button" aria-expanded="true" aria-controls="header-sidenav-5-3">Games</a><ul class="nav flex-column flex-nowrap collapse show" id="header-sidenav-5-3"><li class="nav-item"><a class="nav-link" href="/resources/games-toolkit">Overview</a></li><li class="nav-item"><a class="nav-link active" href="/cookbook/games/achievements-leaderboard">Add achievements and leaderboards</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/codelabs/build-leaderboards-with-firestore#0" target="_blank" rel="noopener">Build leaderboards with Firestore</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/plugins/google-mobile-ads">Add advertising</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/games/firestore-multiplayer">Add multiplayer support</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/flutter-in-app-purchases" target="_blank" rel="noopener">Add in-app purchases</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/codelabs/firebase-auth-in-flutter-apps" target="_blank" rel="noopener">Add user authentication</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/docs/crashlytics/get-started?platform=flutter" target="_blank" rel="noopener">Debug using Crashlytics</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/flutter-flame-brick-breaker" target="_blank" rel="noopener">Intro to Flame with Flutter</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-5-4" href="#header-sidenav-5-4" role="button" aria-expanded="false" aria-controls="header-sidenav-5-4">Monetization</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-5-4"><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-5-4-1" href="#header-sidenav-5-4-1" role="button" aria-expanded="false" aria-controls="header-sidenav-5-4-1">Advertising</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-5-4-1"><li class="nav-item"><a class="nav-link" href="/resources/ads-overview">Ads overview</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/plugins/google-mobile-ads">Add advertising</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/admob-ads-in-flutter" target="_blank" rel="noopener">Add AdMob ads to your Flutter app</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/admob-inline-ads-in-flutter" target="_blank" rel="noopener">Add an AdMob banner and native inline ads</a></li><li class="nav-item"><a class="nav-link" href="https://developers.google.com/admob/flutter/mediation" target="_blank" rel="noopener">Google AdMob mediation</a></li><li class="nav-item"><a class="nav-link" href="https://pub.dev/packages/interactive_media_ads" target="_blank" rel="noopener">Interactive Media Ads SDK</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-5-4-2" href="#header-sidenav-5-4-2" role="button" aria-expanded="false" aria-controls="header-sidenav-5-4-2">In-app purchases</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-5-4-2"><li class="nav-item"><a class="nav-link" href="/resources/in-app-purchases-overview">In-app purchases overview</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/flutter-in-app-purchases" target="_blank" rel="noopener">Add in-app purchases</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-5-4-3" href="#header-sidenav-5-4-3" role="button" aria-expanded="false" aria-controls="header-sidenav-5-4-3">Payments</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-5-4-3"><li class="nav-item"><a class="nav-link" href="/resources/payments-overview">Payments overview</a></li><li class="nav-item"><a class="nav-link" href="https://pub.dev/packages/pay" target="_blank" rel="noopener">Google pay package</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-5-5" href="#header-sidenav-5-5" role="button" aria-expanded="false" aria-controls="header-sidenav-5-5">Maps</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-5-5"><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/google-maps-in-flutter" target="_blank" rel="noopener">Add Google maps to a Flutter app</a></li><li class="nav-item"><a class="nav-link" href="https://developers.google.com/maps/flutter-package" target="_blank" rel="noopener">Google Maps package</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-5-6" href="#header-sidenav-5-6" role="button" aria-expanded="false" aria-controls="header-sidenav-5-6">News</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-5-6"><li class="nav-item"><a class="nav-link" href="/resources/news-toolkit">Build a news app</a></li></ul></li></ul></li><li aria-hidden="true"><div class="sidebar-primary-divider"></div></li><li class="nav-header">User interface</li><li class="nav-item"><a class="nav-link" href="/ui">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/ui/widgets">Widget catalog</a></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-10" role="button" aria-expanded="false" aria-controls="header-sidenav-10">Layout</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-10"><li class="nav-item"><a class="nav-link" href="/ui/layout">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/ui/layout/tutorial">Build a layout</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-10-3" href="/ui/layout/lists" role="button" aria-expanded="false" aria-controls="header-sidenav-10-3">Lists & grids</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-10-3"><li class="nav-item"><a class="nav-link" href="/cookbook/lists/basic-list">Create and use lists</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/horizontal-list">Create a horizontal list</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/grid-lists">Create a grid view</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/mixed-list">Create lists with different types of items</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/spaced-items">Create lists with spaced items</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/long-lists">Work with long lists</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-10-4" href="/ui/layout/scrolling" role="button" aria-expanded="false" aria-controls="header-sidenav-10-4">Scrolling</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-10-4"><li class="nav-item"><a class="nav-link" href="/ui/layout/scrolling">Overview</a></li><li class="nav-item"><a class="nav-link" href="/ui/layout/scrolling/slivers">Use slivers to achieve fancy scrolling</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/floating-app-bar">Place a floating app bar above a list</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/effects/parallax-scrolling">Create a scrolling parallax effect</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-11" role="button" aria-expanded="false" aria-controls="header-sidenav-11">Adaptive & responsive design</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-11"><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive">Overview</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/general">General approach</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/safearea-mediaquery">SafeArea & MediaQuery</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/large-screens">Large screens & foldables</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/input">User input & accessibility</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/capabilities">Capabilities & policies</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/best-practices">Best practices</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/more-info">Additional resources</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-12" role="button" aria-expanded="false" aria-controls="header-sidenav-12">Design & theming</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-12"><li class="nav-item"><a class="nav-link" href="/cookbook/design/themes">Share styles with themes</a></li><li class="nav-item"><a class="nav-link" href="/ui/design/material">Material design</a></li><li class="nav-item"><a class="nav-link" href="/release/breaking-changes/material-3-migration">Migrate to Material 3</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-12-4" href="/ui/design/text" role="button" aria-expanded="false" aria-controls="header-sidenav-12-4">Text</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-12-4"><li class="nav-item"><a class="nav-link" href="/ui/design/text/typography">Fonts & typography</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/fonts">Use a custom font</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/package-fonts">Export fonts from a package</a></li><li class="nav-item"><a class="nav-link" href="https://pub.dev/packages/google_fonts" target="_blank" rel="noopener">Google Fonts package</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-12-5" href="/ui/design/graphics" role="button" aria-expanded="false" aria-controls="header-sidenav-12-5">Custom graphics</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-12-5"><li class="nav-item"><a class="nav-link" href="/ui/design/graphics/fragment-shaders">Use custom fragment shaders</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-13" role="button" aria-expanded="false" aria-controls="header-sidenav-13">Interactivity</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-13"><li class="nav-item"><a class="nav-link" href="/ui/interactivity">Add interactivity to your app</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-13-2" href="/ui/interactivity/gestures" role="button" aria-expanded="false" aria-controls="header-sidenav-13-2">Gestures</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-13-2"><li class="nav-item"><a class="nav-link" href="/ui/interactivity/gestures">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/gestures/handling-taps">Handle taps</a></li><li class="nav-item"><a class="nav-link" href="/ui/interactivity/gestures/drag-outside">Drag an object outside an app</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/effects/drag-a-widget">Drag a UI element within an app</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/gestures/ripples">Add Material touch ripples</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/gestures/dismissible">Implement swipe to dismiss</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-13-3" href="/ui/interactivity/input" role="button" aria-expanded="false" aria-controls="header-sidenav-13-3">Input & forms</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-13-3"><li class="nav-item"><a class="nav-link" href="/cookbook/forms/text-input">Create and style a text field</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/forms/retrieve-input">Retrieve the value of a text field</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/forms/text-field-changes">Handle changes to a text field</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/forms/focus">Manage focus in text fields</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/forms/validation">Build a form with validation</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/snackbars">Display a snackbar</a></li><li class="nav-item"><a class="nav-link" href="/ui/interactivity/actions-and-shortcuts">Implement actions & shortcuts</a></li><li class="nav-item"><a class="nav-link" href="/ui/interactivity/focus">Manage keyboard focus</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-14" role="button" aria-expanded="false" aria-controls="header-sidenav-14">Assets & media</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-14"><li class="nav-item"><a class="nav-link" href="/ui/assets/assets-and-images">Add assets and images</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/images/network-image">Display images from the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/images/fading-in-images">Fade in images with a placeholder</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/plugins/play-video">Play and pause a video</a></li><li class="nav-item"><a class="nav-link" href="/ui/assets/asset-transformation">Transform assets at build time</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-15" role="button" aria-expanded="false" aria-controls="header-sidenav-15">Navigation & routing</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-15"><li class="nav-item"><a class="nav-link" href="/ui/navigation">Overview</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/tabs">Add tabs to your app</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/navigation-basics">Navigate to a new screen and back</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/passing-data">Send data to a new screen</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/returning-data">Return data from a screen</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/drawer">Add a drawer to a screen</a></li><li class="nav-item"><a class="nav-link" href="/ui/navigation/deep-linking">Set up deep linking</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/set-up-app-links">Set up app links for Android</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/set-up-universal-links">Set up universal links for iOS</a></li><li class="nav-item"><a class="nav-link" href="/ui/navigation/url-strategies">Configure web URL strategies</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-16" role="button" aria-expanded="false" aria-controls="header-sidenav-16">Animations & transitions</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-16"><li class="nav-item"><a class="nav-link" href="/ui/animations">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/tutorial">Tutorial</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/implicit-animations">Implicit animations</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/animation/animated-container">Animate the properties of a container</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/animation/opacity-animation">Fade a widget in and out</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/hero-animations">Hero animations</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/animation/page-route-animation">Animate a page route transition</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/animation/physics-simulation">Animate using a physics simulation</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/staggered-animations">Staggered animations</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/effects/staggered-menu-animation">Create a staggered menu animation</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/overview">API overview</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-17" role="button" aria-expanded="false" aria-controls="header-sidenav-17">Accessibility & internationalization</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-17"><li class="nav-item"><a class="nav-link" href="/ui/accessibility-and-internationalization/accessibility">Accessibility</a></li><li class="nav-item"><a class="nav-link" href="/ui/accessibility-and-internationalization/internationalization">Internationalization</a></li></ul></li><li aria-hidden="true"><div class="sidebar-primary-divider"></div></li><li class="nav-header">Beyond UI</li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-20" role="button" aria-expanded="false" aria-controls="header-sidenav-20">Data & backend</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-20"><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-20-1" href="/data-and-backend/state-mgmt" role="button" aria-expanded="false" aria-controls="header-sidenav-20-1">State management</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-20-1"><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/intro">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/declarative">Think declaratively</a></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/ephemeral-vs-app">Ephemeral vs app state</a></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/simple">Simple app state management</a></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/options">Options</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-20-2" href="/data-and-backend/networking" role="button" aria-expanded="false" aria-controls="header-sidenav-20-2">Networking & http</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-20-2"><li class="nav-item"><a class="nav-link" href="/data-and-backend/networking">Overview</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/fetch-data">Fetch data from the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/authenticated-requests">Make authenticated requests</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/send-data">Send data to the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/update-data">Update data over the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/delete-data">Delete data on the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/web-sockets">Communicate with WebSockets</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-20-3" href="/data-and-backend/serialization" role="button" aria-expanded="false" aria-controls="header-sidenav-20-3">Serialization</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-20-3"><li class="nav-item"><a class="nav-link" href="/data-and-backend/serialization/json">JSON serialization</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/background-parsing">Parse JSON in the background</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-20-4" href="/data-and-backend/persistence" role="button" aria-expanded="false" aria-controls="header-sidenav-20-4">Persistence</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-20-4"><li class="nav-item"><a class="nav-link" href="/cookbook/persistence/key-value">Store key-value data on disk</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/persistence/reading-writing-files">Read and write files</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/persistence/sqlite">Persist data with SQLite</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-20-5" href="/data-and-backend/firebase" role="button" aria-expanded="false" aria-controls="header-sidenav-20-5">Firebase</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-20-5"><li class="nav-item"><a class="nav-link" href="/data-and-backend/firebase">Overview</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/docs/flutter/setup" target="_blank" rel="noopener">Add Firebase to your Flutter app</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/google-apis">Google APIs</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-21" role="button" aria-expanded="false" aria-controls="header-sidenav-21">App architecture</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-21"><li class="nav-item"><a class="nav-link" href="/app-architecture">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/app-architecture/concepts">Architecture concepts</a></li><li class="nav-item"><a class="nav-link" href="/app-architecture/guide">Guide to app architecture</a></li><li class="nav-item"><a class="nav-link" href="/app-architecture/recommendations">Recommendations</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-21-5" href="/cookbook/architecture" role="button" aria-expanded="false" aria-controls="header-sidenav-21-5">Design patterns</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-21-5"><li class="nav-item"><a class="nav-link" href="/cookbook/architecture/optimistic-state">Optimistic state</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/architecture/key-value-data">Persistent storage architecture: Key-value data</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/architecture/sql">Persistent storage architecture: SQL</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/architecture/offline-first">Offline-first</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-22" role="button" aria-expanded="false" aria-controls="header-sidenav-22">Platform integration</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-22"><li class="nav-item"><a class="nav-link" href="/reference/supported-platforms">Supported platforms</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/desktop">Build desktop apps with Flutter</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/platform-channels">Write platform-specific code</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/platform-adaptations">Automatic platform adaptations</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-22-5" href="/platform-integration/android" role="button" aria-expanded="false" aria-controls="header-sidenav-22-5">Android</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-22-5"><li class="nav-item"><a class="nav-link" href="/platform-integration/android/install-android">Add Android as build target</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/splash-screen">Add a splash screen</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/predictive-back">Add predictive back</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/c-interop">Bind to native code</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/platform-views">Host a native Android view</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/call-jetpack-apis">Calling JetPack APIs</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/compose-activity">Launch a Jetpack Compose activity</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/restore-state-android">Restore state on Android</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/chromeos">Target ChromeOS with Android</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-22-6" href="/platform-integration/ios" role="button" aria-expanded="false" aria-controls="header-sidenav-22-6">iOS</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-22-6"><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/install-ios">Add iOS as build target</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/ios-latest">Flutter on latest iOS</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/apple-frameworks">Leverage Apple's system libraries</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/launch-screen">Add a launch screen</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/ios-app-clip">Add iOS App Clip support</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/app-extensions">Add iOS app extensions</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/c-interop">Bind to native code</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/platform-views">Host a native iOS view</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/ios-debugging">Enable debugging on iOS</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/restore-state-ios">Restore state on iOS</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-22-7" href="/platform-integration/linux" role="button" aria-expanded="false" aria-controls="header-sidenav-22-7">Linux</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-22-7"><li class="nav-item"><a class="nav-link" href="/platform-integration/linux/install-linux">Add Linux as build target</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/linux/building">Build a Linux app</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-22-8" href="/platform-integration/macos" role="button" aria-expanded="false" aria-controls="header-sidenav-22-8">macOS</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-22-8"><li class="nav-item"><a class="nav-link" href="/platform-integration/macos/install-macos">Add macOS as build target</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/macos/building">Build a macOS app</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/macos/c-interop">Bind to native code</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/macos/platform-views">Host a native macOS view</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-22-9" href="/platform-integration/web" role="button" aria-expanded="false" aria-controls="header-sidenav-22-9">Web</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-22-9"><li class="nav-item"><a class="nav-link" href="/platform-integration/web">Web support in Flutter</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/install-web">Add web as build target</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/building">Build a web app</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/wasm">Compile to WebAssembly</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/initialization">Customize app initialization</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/embedding-flutter-web">Add Flutter to any web app</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/web-content-in-flutter">Web content in Flutter</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/renderers">Web renderers</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/web-images">Display images on the web</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/faq">Web FAQ</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-22-10" href="/platform-integration/windows" role="button" aria-expanded="false" aria-controls="header-sidenav-22-10">Windows</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-22-10"><li class="nav-item"><a class="nav-link" href="/platform-integration/windows/install-windows">Add Windows as build target</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/windows/building">Build a Windows app</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-23" role="button" aria-expanded="false" aria-controls="header-sidenav-23">Packages & plugins</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-23"><li class="nav-item"><a class="nav-link" href="/packages-and-plugins/using-packages">Use packages & plugins</a></li><li class="nav-item"><a class="nav-link" href="/packages-and-plugins/developing-packages">Develop packages & plugins</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-23-3" href="/packages-and-plugins/swift-package-manager" role="button" aria-expanded="false" aria-controls="header-sidenav-23-3">Swift Package Manager</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-23-3"><li class="nav-item"><a class="nav-link" href="/packages-and-plugins/swift-package-manager/for-app-developers">For app developers</a></li><li class="nav-item"><a class="nav-link" href="/packages-and-plugins/swift-package-manager/for-plugin-authors">For plugin authors</a></li></ul></li><div class="dropdown-divider"></div><li class="nav-item"><a class="nav-link" href="/packages-and-plugins/favorites">Flutter Favorites</a></li><li class="nav-item"><a class="nav-link" href="https://pub.dev/flutter" target="_blank" rel="noopener">Package repository</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#header-sidenav-24" role="button" aria-expanded="false" aria-controls="header-sidenav-24">Testing & debugging</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-24"><li class="nav-header">Testing</li><li class="nav-item"><a class="nav-link" href="/testing/overview">Overview</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-24-3" href="#header-sidenav-24-3" role="button" aria-expanded="false" aria-controls="header-sidenav-24-3">Unit testing</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-24-3"><li class="nav-item"><a class="nav-link" href="/cookbook/testing/unit/introduction">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/testing/unit/mocking">Mock dependencies</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-24-4" href="#header-sidenav-24-4" role="button" aria-expanded="false" aria-controls="header-sidenav-24-4">Widget testing</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-24-4"><li class="nav-item"><a class="nav-link" href="/cookbook/testing/widget/introduction">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/testing/widget/finders">Find widgets</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/testing/widget/scrolling">Simulate scrolling</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/testing/widget/tap-drag">Simulate user interaction</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#header-sidenav-24-5" href="#header-sidenav-24-5" role="button" aria-expanded="false" aria-controls="header-sidenav-24-5">Integration testing</a><ul class="nav flex-column flex-nowrap collapse" id="header-sidenav-24-5"><li class="nav-item"><a class="nav-link" href="/cookbook/testing/integration/introduction">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/testing/integration-tests">Write and run an integration test</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/testing/integration/profiling">Profile an integration test</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/testing/testing-plugins">Test a plugin</a></li><li class="nav-item"><a class="nav-link" href="/testing/plugins-in-tests">Handle plugin code in tests</a></li><li class="nav-header">Debugging</li><li class="nav-item"><a class="nav-link" href="/testing/debugging">Debugging tools</a></li><li class="nav-item"><a class="nav-link" href="/testing/code-debugging">Debug your app programmatically</a></li><li class="nav-item"><a class="nav-link" href="/testing/native-debugging">Use a native language debugger</a></li><li class="nav-item"><a class="nav-link" href="/testing/build-modes">Flutter's build modes</a></li><li 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collapsible" data-toggle="collapse" data-target="#fixed-sidenav-5-3" href="#fixed-sidenav-5-3" role="button" aria-expanded="true" aria-controls="fixed-sidenav-5-3">Games</a><ul class="nav flex-column flex-nowrap collapse show" id="fixed-sidenav-5-3"><li class="nav-item"><a class="nav-link" href="/resources/games-toolkit">Overview</a></li><li class="nav-item"><a class="nav-link active" href="/cookbook/games/achievements-leaderboard">Add achievements and leaderboards</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/codelabs/build-leaderboards-with-firestore#0" target="_blank" rel="noopener">Build leaderboards with Firestore</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/plugins/google-mobile-ads">Add advertising</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/games/firestore-multiplayer">Add multiplayer support</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/flutter-in-app-purchases" target="_blank" rel="noopener">Add in-app purchases</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/codelabs/firebase-auth-in-flutter-apps" target="_blank" rel="noopener">Add user authentication</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/docs/crashlytics/get-started?platform=flutter" target="_blank" rel="noopener">Debug using Crashlytics</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/flutter-flame-brick-breaker" target="_blank" rel="noopener">Intro to Flame with Flutter</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-5-4" href="#fixed-sidenav-5-4" role="button" aria-expanded="false" aria-controls="fixed-sidenav-5-4">Monetization</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-5-4"><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-5-4-1" href="#fixed-sidenav-5-4-1" role="button" aria-expanded="false" aria-controls="fixed-sidenav-5-4-1">Advertising</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-5-4-1"><li class="nav-item"><a class="nav-link" href="/resources/ads-overview">Ads overview</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/plugins/google-mobile-ads">Add advertising</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/admob-ads-in-flutter" target="_blank" rel="noopener">Add AdMob ads to your Flutter app</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/admob-inline-ads-in-flutter" target="_blank" rel="noopener">Add an AdMob banner and native inline ads</a></li><li class="nav-item"><a class="nav-link" href="https://developers.google.com/admob/flutter/mediation" target="_blank" rel="noopener">Google AdMob mediation</a></li><li class="nav-item"><a class="nav-link" href="https://pub.dev/packages/interactive_media_ads" target="_blank" rel="noopener">Interactive Media Ads SDK</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-5-4-2" href="#fixed-sidenav-5-4-2" role="button" aria-expanded="false" aria-controls="fixed-sidenav-5-4-2">In-app purchases</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-5-4-2"><li class="nav-item"><a class="nav-link" href="/resources/in-app-purchases-overview">In-app purchases overview</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/flutter-in-app-purchases" target="_blank" rel="noopener">Add in-app purchases</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-5-4-3" href="#fixed-sidenav-5-4-3" role="button" aria-expanded="false" aria-controls="fixed-sidenav-5-4-3">Payments</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-5-4-3"><li class="nav-item"><a class="nav-link" href="/resources/payments-overview">Payments overview</a></li><li class="nav-item"><a class="nav-link" href="https://pub.dev/packages/pay" target="_blank" rel="noopener">Google pay package</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-5-5" href="#fixed-sidenav-5-5" role="button" aria-expanded="false" aria-controls="fixed-sidenav-5-5">Maps</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-5-5"><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/google-maps-in-flutter" target="_blank" rel="noopener">Add Google maps to a Flutter app</a></li><li class="nav-item"><a class="nav-link" href="https://developers.google.com/maps/flutter-package" target="_blank" rel="noopener">Google Maps package</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-5-6" href="#fixed-sidenav-5-6" role="button" aria-expanded="false" aria-controls="fixed-sidenav-5-6">News</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-5-6"><li class="nav-item"><a class="nav-link" href="/resources/news-toolkit">Build a news app</a></li></ul></li></ul></li><li aria-hidden="true"><div class="sidebar-primary-divider"></div></li><li class="nav-header">User interface</li><li class="nav-item"><a class="nav-link" href="/ui">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/ui/widgets">Widget catalog</a></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-10" role="button" aria-expanded="false" aria-controls="fixed-sidenav-10">Layout</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-10"><li class="nav-item"><a class="nav-link" href="/ui/layout">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/ui/layout/tutorial">Build a layout</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-10-3" href="/ui/layout/lists" role="button" aria-expanded="false" aria-controls="fixed-sidenav-10-3">Lists & grids</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-10-3"><li class="nav-item"><a class="nav-link" href="/cookbook/lists/basic-list">Create and use lists</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/horizontal-list">Create a horizontal list</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/grid-lists">Create a grid view</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/mixed-list">Create lists with different types of items</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/spaced-items">Create lists with spaced items</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/long-lists">Work with long lists</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-10-4" href="/ui/layout/scrolling" role="button" aria-expanded="false" aria-controls="fixed-sidenav-10-4">Scrolling</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-10-4"><li class="nav-item"><a class="nav-link" href="/ui/layout/scrolling">Overview</a></li><li class="nav-item"><a class="nav-link" href="/ui/layout/scrolling/slivers">Use slivers to achieve fancy scrolling</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/lists/floating-app-bar">Place a floating app bar above a list</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/effects/parallax-scrolling">Create a scrolling parallax effect</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-11" role="button" aria-expanded="false" aria-controls="fixed-sidenav-11">Adaptive & responsive design</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-11"><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive">Overview</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/general">General approach</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/safearea-mediaquery">SafeArea & MediaQuery</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/large-screens">Large screens & foldables</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/input">User input & accessibility</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/capabilities">Capabilities & policies</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/best-practices">Best practices</a></li><li class="nav-item"><a class="nav-link" href="/ui/adaptive-responsive/more-info">Additional resources</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-12" role="button" aria-expanded="false" aria-controls="fixed-sidenav-12">Design & theming</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-12"><li class="nav-item"><a class="nav-link" href="/cookbook/design/themes">Share styles with themes</a></li><li class="nav-item"><a class="nav-link" href="/ui/design/material">Material design</a></li><li class="nav-item"><a class="nav-link" href="/release/breaking-changes/material-3-migration">Migrate to Material 3</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-12-4" href="/ui/design/text" role="button" aria-expanded="false" aria-controls="fixed-sidenav-12-4">Text</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-12-4"><li class="nav-item"><a class="nav-link" href="/ui/design/text/typography">Fonts & typography</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/fonts">Use a custom font</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/package-fonts">Export fonts from a package</a></li><li class="nav-item"><a class="nav-link" href="https://pub.dev/packages/google_fonts" target="_blank" rel="noopener">Google Fonts package</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-12-5" href="/ui/design/graphics" role="button" aria-expanded="false" aria-controls="fixed-sidenav-12-5">Custom graphics</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-12-5"><li class="nav-item"><a class="nav-link" href="/ui/design/graphics/fragment-shaders">Use custom fragment shaders</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-13" role="button" aria-expanded="false" aria-controls="fixed-sidenav-13">Interactivity</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-13"><li class="nav-item"><a class="nav-link" href="/ui/interactivity">Add interactivity to your app</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-13-2" href="/ui/interactivity/gestures" role="button" aria-expanded="false" aria-controls="fixed-sidenav-13-2">Gestures</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-13-2"><li class="nav-item"><a class="nav-link" href="/ui/interactivity/gestures">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/gestures/handling-taps">Handle taps</a></li><li class="nav-item"><a class="nav-link" href="/ui/interactivity/gestures/drag-outside">Drag an object outside an app</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/effects/drag-a-widget">Drag a UI element within an app</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/gestures/ripples">Add Material touch ripples</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/gestures/dismissible">Implement swipe to dismiss</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-13-3" href="/ui/interactivity/input" role="button" aria-expanded="false" aria-controls="fixed-sidenav-13-3">Input & forms</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-13-3"><li class="nav-item"><a class="nav-link" href="/cookbook/forms/text-input">Create and style a text field</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/forms/retrieve-input">Retrieve the value of a text field</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/forms/text-field-changes">Handle changes to a text field</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/forms/focus">Manage focus in text fields</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/forms/validation">Build a form with validation</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/snackbars">Display a snackbar</a></li><li class="nav-item"><a class="nav-link" href="/ui/interactivity/actions-and-shortcuts">Implement actions & shortcuts</a></li><li class="nav-item"><a class="nav-link" href="/ui/interactivity/focus">Manage keyboard focus</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-14" role="button" aria-expanded="false" aria-controls="fixed-sidenav-14">Assets & media</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-14"><li class="nav-item"><a class="nav-link" href="/ui/assets/assets-and-images">Add assets and images</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/images/network-image">Display images from the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/images/fading-in-images">Fade in images with a placeholder</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/plugins/play-video">Play and pause a video</a></li><li class="nav-item"><a class="nav-link" href="/ui/assets/asset-transformation">Transform assets at build time</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-15" role="button" aria-expanded="false" aria-controls="fixed-sidenav-15">Navigation & routing</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-15"><li class="nav-item"><a class="nav-link" href="/ui/navigation">Overview</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/tabs">Add tabs to your app</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/navigation-basics">Navigate to a new screen and back</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/passing-data">Send data to a new screen</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/returning-data">Return data from a screen</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/design/drawer">Add a drawer to a screen</a></li><li class="nav-item"><a class="nav-link" href="/ui/navigation/deep-linking">Set up deep linking</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/set-up-app-links">Set up app links for Android</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/navigation/set-up-universal-links">Set up universal links for iOS</a></li><li class="nav-item"><a class="nav-link" href="/ui/navigation/url-strategies">Configure web URL strategies</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-16" role="button" aria-expanded="false" aria-controls="fixed-sidenav-16">Animations & transitions</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-16"><li class="nav-item"><a class="nav-link" href="/ui/animations">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/tutorial">Tutorial</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/implicit-animations">Implicit animations</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/animation/animated-container">Animate the properties of a container</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/animation/opacity-animation">Fade a widget in and out</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/hero-animations">Hero animations</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/animation/page-route-animation">Animate a page route transition</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/animation/physics-simulation">Animate using a physics simulation</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/staggered-animations">Staggered animations</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/effects/staggered-menu-animation">Create a staggered menu animation</a></li><li class="nav-item"><a class="nav-link" href="/ui/animations/overview">API overview</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-17" role="button" aria-expanded="false" aria-controls="fixed-sidenav-17">Accessibility & internationalization</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-17"><li class="nav-item"><a class="nav-link" href="/ui/accessibility-and-internationalization/accessibility">Accessibility</a></li><li class="nav-item"><a class="nav-link" href="/ui/accessibility-and-internationalization/internationalization">Internationalization</a></li></ul></li><li aria-hidden="true"><div class="sidebar-primary-divider"></div></li><li class="nav-header">Beyond UI</li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-20" role="button" aria-expanded="false" aria-controls="fixed-sidenav-20">Data & backend</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-20"><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-20-1" href="/data-and-backend/state-mgmt" role="button" aria-expanded="false" aria-controls="fixed-sidenav-20-1">State management</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-20-1"><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/intro">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/declarative">Think declaratively</a></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/ephemeral-vs-app">Ephemeral vs app state</a></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/simple">Simple app state management</a></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/state-mgmt/options">Options</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-20-2" href="/data-and-backend/networking" role="button" aria-expanded="false" aria-controls="fixed-sidenav-20-2">Networking & http</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-20-2"><li class="nav-item"><a class="nav-link" href="/data-and-backend/networking">Overview</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/fetch-data">Fetch data from the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/authenticated-requests">Make authenticated requests</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/send-data">Send data to the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/update-data">Update data over the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/delete-data">Delete data on the internet</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/web-sockets">Communicate with WebSockets</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-20-3" href="/data-and-backend/serialization" role="button" aria-expanded="false" aria-controls="fixed-sidenav-20-3">Serialization</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-20-3"><li class="nav-item"><a class="nav-link" href="/data-and-backend/serialization/json">JSON serialization</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/networking/background-parsing">Parse JSON in the background</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-20-4" href="/data-and-backend/persistence" role="button" aria-expanded="false" aria-controls="fixed-sidenav-20-4">Persistence</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-20-4"><li class="nav-item"><a class="nav-link" href="/cookbook/persistence/key-value">Store key-value data on disk</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/persistence/reading-writing-files">Read and write files</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/persistence/sqlite">Persist data with SQLite</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-20-5" href="/data-and-backend/firebase" role="button" aria-expanded="false" aria-controls="fixed-sidenav-20-5">Firebase</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-20-5"><li class="nav-item"><a class="nav-link" href="/data-and-backend/firebase">Overview</a></li><li class="nav-item"><a class="nav-link" href="https://firebase.google.com/docs/flutter/setup" target="_blank" rel="noopener">Add Firebase to your Flutter app</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/data-and-backend/google-apis">Google APIs</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-21" role="button" aria-expanded="false" aria-controls="fixed-sidenav-21">App architecture</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-21"><li class="nav-item"><a class="nav-link" href="/app-architecture">Introduction</a></li><li class="nav-item"><a class="nav-link" href="/app-architecture/concepts">Architecture concepts</a></li><li class="nav-item"><a class="nav-link" href="/app-architecture/guide">Guide to app architecture</a></li><li class="nav-item"><a class="nav-link" href="/app-architecture/recommendations">Recommendations</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-21-5" href="/cookbook/architecture" role="button" aria-expanded="false" aria-controls="fixed-sidenav-21-5">Design patterns</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-21-5"><li class="nav-item"><a class="nav-link" href="/cookbook/architecture/optimistic-state">Optimistic state</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/architecture/key-value-data">Persistent storage architecture: Key-value data</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/architecture/sql">Persistent storage architecture: SQL</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/architecture/offline-first">Offline-first</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-22" role="button" aria-expanded="false" aria-controls="fixed-sidenav-22">Platform integration</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-22"><li class="nav-item"><a class="nav-link" href="/reference/supported-platforms">Supported platforms</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/desktop">Build desktop apps with Flutter</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/platform-channels">Write platform-specific code</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/platform-adaptations">Automatic platform adaptations</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-22-5" href="/platform-integration/android" role="button" aria-expanded="false" aria-controls="fixed-sidenav-22-5">Android</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-22-5"><li class="nav-item"><a class="nav-link" href="/platform-integration/android/install-android">Add Android as build target</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/splash-screen">Add a splash screen</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/predictive-back">Add predictive back</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/c-interop">Bind to native code</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/platform-views">Host a native Android view</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/call-jetpack-apis">Calling JetPack APIs</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/compose-activity">Launch a Jetpack Compose activity</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/restore-state-android">Restore state on Android</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/android/chromeos">Target ChromeOS with Android</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-22-6" href="/platform-integration/ios" role="button" aria-expanded="false" aria-controls="fixed-sidenav-22-6">iOS</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-22-6"><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/install-ios">Add iOS as build target</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/ios-latest">Flutter on latest iOS</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/apple-frameworks">Leverage Apple's system libraries</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/launch-screen">Add a launch screen</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/ios-app-clip">Add iOS App Clip support</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/app-extensions">Add iOS app extensions</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/c-interop">Bind to native code</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/platform-views">Host a native iOS view</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/ios-debugging">Enable debugging on iOS</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/ios/restore-state-ios">Restore state on iOS</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" 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href="/platform-integration/macos/building">Build a macOS app</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/macos/c-interop">Bind to native code</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/macos/platform-views">Host a native macOS view</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-22-9" href="/platform-integration/web" role="button" aria-expanded="false" aria-controls="fixed-sidenav-22-9">Web</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-22-9"><li class="nav-item"><a class="nav-link" href="/platform-integration/web">Web support in Flutter</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/install-web">Add web as build target</a></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/building">Build a web app</a></li><li class="nav-item"><a class="nav-link" 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href="/testing/integration-tests">Write and run an integration test</a></li><li class="nav-item"><a class="nav-link" href="/cookbook/testing/integration/profiling">Profile an integration test</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/testing/testing-plugins">Test a plugin</a></li><li class="nav-item"><a class="nav-link" href="/testing/plugins-in-tests">Handle plugin code in tests</a></li><li class="nav-header">Debugging</li><li class="nav-item"><a class="nav-link" href="/testing/debugging">Debugging tools</a></li><li class="nav-item"><a class="nav-link" href="/testing/code-debugging">Debug your app programmatically</a></li><li class="nav-item"><a class="nav-link" href="/testing/native-debugging">Use a native language debugger</a></li><li class="nav-item"><a class="nav-link" href="/testing/build-modes">Flutter's build modes</a></li><li class="nav-item"><a class="nav-link" href="/testing/common-errors">Common Flutter errors</a></li><li class="nav-item"><a 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href="/deployment/obfuscate">Obfuscate Dart code</a></li><li class="nav-item"><a class="nav-link" href="/deployment/flavors">Create flavors of an app</a></li><li class="nav-item"><a class="nav-link" href="/deployment/android">Build and release an Android app</a></li><li class="nav-item"><a class="nav-link" href="/deployment/ios">Build and release an iOS app</a></li><li class="nav-item"><a class="nav-link" href="/deployment/macos">Build and release a macOS app</a></li><li class="nav-item"><a class="nav-link" href="/deployment/linux">Build and release a Linux app</a></li><li class="nav-item"><a class="nav-link" href="/deployment/windows">Build and release a Windows app</a></li><li class="nav-item"><a class="nav-link" href="/deployment/web">Build and release a web app</a></li><li class="nav-item"><a class="nav-link" href="/deployment/cd">Set up continuous deployment</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#fixed-sidenav-27" role="button" aria-expanded="false" aria-controls="fixed-sidenav-27">Add to an existing app</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-27"><li class="nav-item"><a class="nav-link" href="/add-to-app">Introduction</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-27-2" href="/add-to-app/android" role="button" aria-expanded="false" aria-controls="fixed-sidenav-27-2">Add to an Android app</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-27-2"><li class="nav-item"><a class="nav-link" href="/add-to-app/android/project-setup">Set up Android project</a></li><li class="nav-item"><a class="nav-link" href="/add-to-app/android/add-flutter-screen">Add a single Flutter screen</a></li><li class="nav-item"><a class="nav-link" href="/add-to-app/android/add-flutter-fragment">Add a Flutter Fragment</a></li><li class="nav-item"><a class="nav-link" href="/add-to-app/android/add-flutter-view">Add a Flutter View</a></li><li class="nav-item"><a class="nav-link" href="/add-to-app/android/plugin-setup">Use a Flutter plugin</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#fixed-sidenav-27-3" href="/add-to-app/ios" role="button" aria-expanded="false" aria-controls="fixed-sidenav-27-3">Add to an iOS app</a><ul class="nav flex-column flex-nowrap collapse" id="fixed-sidenav-27-3"><li class="nav-item"><a class="nav-link" href="/add-to-app/ios/project-setup">Set up iOS project</a></li><li class="nav-item"><a class="nav-link" href="/add-to-app/ios/add-flutter-screen">Add a single Flutter screen</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/platform-integration/web/embedding-flutter-web">Add to a web app</a></li><li class="nav-item"><a class="nav-link" href="/add-to-app/debugging">Debug embedded Flutter module</a></li><li class="nav-item"><a 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target="_blank" rel="noopener">API docs</a></li></ul></li></ul></li></ul></div><main class="site-content col-12 col-md-9 offset-md-3 col-xl-8 offset-xl-2 col-xxl-8 offset-xxl-2"><div id="site-toc--side" class="site-toc fixed-col col-xl-2 order-3" data-fixed-column><header class="site-toc__title">Contents</header><ul class="section-nav"><li class="toc-entry nav-item toc-h2"><a class="nav-link" href="#1-enable-platform-services">1. Enable platform services</a><ul class="nav"><li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#ios">iOS</a></li><li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#android">Android</a></li></ul></li><li class="toc-entry nav-item toc-h2"><a class="nav-link" href="#2-sign-in-to-the-game-service">2. Sign in to the game service</a></li><li class="toc-entry nav-item toc-h2"><a class="nav-link" href="#3-unlock-achievements">3. Unlock achievements</a></li><li class="toc-entry nav-item toc-h2"><a class="nav-link" href="#4-submit-scores">4. Submit scores</a></li><li class="toc-entry nav-item toc-h2"><a class="nav-link" href="#5-next-steps">5. Next steps</a></li><li class="toc-entry nav-item toc-h2"><a class="nav-link" href="#more-information">More information</a></li></ul></div><div class="container"><header class="site-content__title" id="site-content-title"><h1>Add achievements and leaderboards to your mobile game</h1><nav class="breadcrumbs" aria-label="breadcrumb"><ol class="breadcrumb-list" vocab="https://schema.org/" typeof="BreadcrumbList"><li class="breadcrumb-item" property="itemListElement" typeof="ListItem"><a href="/cookbook" property="item" typeof="WebPage"><span property="name">Cookbook</span></a><meta property="position" content="0"><span class="material-symbols-outlined child-icon" aria-hidden="true">chevron_right</span></li><li class="breadcrumb-item" property="itemListElement" typeof="ListItem"><a href="/cookbook/games" property="item" typeof="WebPage"><span property="name">Games</span></a><meta property="position" content="1"><span class="material-symbols-outlined child-icon" aria-hidden="true">chevron_right</span></li><li class="breadcrumb-item active" property="itemListElement" typeof="ListItem" aria-current="page"><a href="/cookbook/games/achievements-leaderboard" property="item" typeof="WebPage"><span property="name">Add achievements and leaderboards to your mobile game</span></a><meta property="position" content="2"></li></ol></nav></header><div id="site-toc--inline" class="site-toc"><header class="site-toc__title">Contents</header><ul class="section-nav"><li class="toc-entry toc-h2"><a href="#1-enable-platform-services">1. Enable platform services</a><ul><li class="toc-entry toc-h3"><a href="#ios">iOS</a></li><li class="toc-entry toc-h3"><a href="#android">Android</a></li></ul></li><li class="toc-entry toc-h2"><a href="#2-sign-in-to-the-game-service">2. Sign in to the game service</a></li><li class="toc-entry toc-h2"><a href="#3-unlock-achievements">3. Unlock achievements</a></li><li class="toc-entry toc-h2"><a href="#4-submit-scores">4. Submit scores</a></li><li class="toc-entry toc-h2"><a href="#5-next-steps">5. Next steps</a></li><li class="toc-entry toc-h2"><a href="#more-information">More information</a></li></ul></div> <?code-excerpt path-base="cookbook/games/achievements_leaderboards"?> <p>Gamers have various motivations for playing games. In broad strokes, there are four major motivations: <a href="https://meditations.metavert.io/p/game-player-motivations">immersion, achievement, cooperation, and competition</a>. No matter the game you build, some players want to <em>achieve</em> in it. This could be trophies won or secrets unlocked. Some players want to <em>compete</em> in it. This could be hitting high scores or accomplishing speedruns. These two ideas map to the concepts of <em>achievements</em> and <em>leaderboards</em>.</p><p><img src="/assets/images/docs/cookbook/types-of-gamer-motivations.png" alt="A simple graphic representing the four types of motivation explained above" class="site-illustration"></p><p>Ecosystems such as the App Store and Google Play provide centralized services for achievements and leaderboards. Players can view achievements from all their games in one place and developers don't need to re-implement them for every game.</p><p>This recipe demonstrates how to use the <a href="https://pub.dev/packages/games_services"><code>games_services</code> package</a> to add achievements and leaderboard functionality to your mobile game.</p><div class="header-wrapper"><h2 id="1-enable-platform-services">1. Enable platform services</h2><a class="heading-link" href="#1-enable-platform-services" aria-label="Link to '1. Enable platform services' section">#</a></div><p>To enable games services, set up <em>Game Center</em> on iOS and <em>Google Play Games Services</em> on Android.</p><div class="header-wrapper"><h3 id="ios">iOS</h3><a class="heading-link" href="#ios" aria-label="Link to 'iOS' section">#</a></div><p>To enable Game Center (GameKit) on iOS:</p><ol><li><p>Open your Flutter project in Xcode. Open <code>ios/Runner.xcworkspace</code></p></li><li><p>Select the root <strong>Runner</strong> project.</p></li><li><p>Go to the <strong>Signing &amp; Capabilities</strong> tab.</p></li><li><p>Click the <code>+</code> button to add <strong>Game Center</strong> as a capability.</p></li><li><p>Close Xcode.</p></li><li><p>If you haven't already, register your game in <a href="https://appstoreconnect.apple.com/">App Store Connect</a> and from the <strong>My App</strong> section press the <code>+</code> icon.</p><p><img src="/assets/images/docs/cookbook/app-store-add-app-button.png" alt="Screenshot of the + button in App Store Connect"></p></li><li><p>Still in App Store Connect, look for the <em>Game Center</em> section. You can find it in <strong>Services</strong> as of this writing. On the <strong>Game Center</strong> page, you might want to set up a leaderboard and several achievements, depending on your game. Take note of the IDs of the leaderboards and achievements you create.</p></li></ol><div class="header-wrapper"><h3 id="android">Android</h3><a class="heading-link" href="#android" aria-label="Link to 'Android' section">#</a></div><p>To enable <em>Play Games Services</em> on Android:</p><ol><li><p>If you haven't already, go to <a href="https://play.google.com/console/">Google Play Console</a> and register your game there.</p><p><img src="/assets/images/docs/cookbook/google-play-create-app.png" alt="Screenshot of the 'Create app' button in Google Play Console"></p></li><li><p>Still in Google Play Console, select <em>Play Games Services</em> → <em>Setup and management</em> → <em>Configuration</em> from the navigation menu and follow their instructions.</p><ul><li><p>This takes a significant amount of time and patience. Among other things, you'll need to set up an OAuth consent screen in Google Cloud Console. If at any point you feel lost, consult the official <a href="https://developers.google.com/games/services/console/enabling">Play Games Services guide</a>.</p><p><img src="/assets/images/docs/cookbook/play-console-play-games-services.png" alt="Screenshot showing the Games Services section in Google Play Console"></p></li></ul></li><li><p>When done, you can start adding leaderboards and achievements in <strong>Play Games Services</strong> → <strong>Setup and management</strong>. Create the exact same set as you did on the iOS side. Make note of IDs.</p></li><li><p>Go to <strong>Play Games Services → Setup and management → Publishing</strong>.</p></li><li><p>Click <strong>Publish</strong>. Don't worry, this doesn't actually publish your game. It only publishes the achievements and leaderboard. Once a leaderboard, for example, is published this way, it cannot be unpublished.</p></li><li><p>Go to <strong>Play Games Services</strong> <strong>→ Setup and management → Configuration → Credentials</strong>.</p></li><li><p>Find the <strong>Get resources</strong> button. It returns an XML file with the Play Games Services IDs.</p><div class="code-block-wrapper language-xml"><div class="code-block-body"><span class="code-block-language" title="Language xml">xml</span><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#6E6E70">&#x3C;!-- THIS IS JUST AN EXAMPLE --></span></span> <span class="line"><span style="color:#222222">&#x3C;?</span><span style="color:#0468D7">xml</span><span style="color:#6200EE"> version</span><span style="color:#222222">=</span><span style="color:#0C7064">"1.0"</span><span style="color:#6200EE"> encoding</span><span style="color:#222222">=</span><span style="color:#0C7064">"utf-8"</span><span style="color:#222222">?></span></span> <span class="line"><span style="color:#222222">&#x3C;</span><span style="color:#0468D7">resources</span><span style="color:#222222">></span></span> <span class="line"><span style="color:#6E6E70"> &#x3C;!--app_id--></span></span> <span class="line"><span style="color:#222222"> &#x3C;</span><span style="color:#0468D7">string</span><span style="color:#6200EE"> name</span><span style="color:#222222">=</span><span style="color:#0C7064">"app_id"</span><span style="color:#6200EE"> translatable</span><span style="color:#222222">=</span><span style="color:#0C7064">"false"</span><span style="color:#222222">>424242424242&#x3C;/</span><span style="color:#0468D7">string</span><span style="color:#222222">></span></span> <span class="line"><span style="color:#6E6E70"> &#x3C;!--package_name--></span></span> <span class="line"><span style="color:#222222"> &#x3C;</span><span style="color:#0468D7">string</span><span style="color:#6200EE"> name</span><span style="color:#222222">=</span><span style="color:#0C7064">"package_name"</span><span style="color:#6200EE"> translatable</span><span style="color:#222222">=</span><span style="color:#0C7064">"false"</span><span style="color:#222222">>dev.flutter.tictactoe&#x3C;/</span><span style="color:#0468D7">string</span><span style="color:#222222">></span></span> <span class="line"><span style="color:#6E6E70"> &#x3C;!--achievement First win--></span></span> <span class="line"><span style="color:#222222"> &#x3C;</span><span style="color:#0468D7">string</span><span style="color:#6200EE"> name</span><span style="color:#222222">=</span><span style="color:#0C7064">"achievement_first_win"</span><span style="color:#6200EE"> translatable</span><span style="color:#222222">=</span><span style="color:#0C7064">"false"</span><span style="color:#222222">>sOmEiDsTrInG&#x3C;/</span><span style="color:#0468D7">string</span><span style="color:#222222">></span></span> <span class="line"><span style="color:#6E6E70"> &#x3C;!--leaderboard Highest Score--></span></span> <span class="line"><span style="color:#222222"> &#x3C;</span><span style="color:#0468D7">string</span><span style="color:#6200EE"> name</span><span style="color:#222222">=</span><span style="color:#0C7064">"leaderboard_highest_score"</span><span style="color:#6200EE"> translatable</span><span style="color:#222222">=</span><span style="color:#0C7064">"false"</span><span style="color:#222222">>sOmEiDsTrInG&#x3C;/</span><span style="color:#0468D7">string</span><span style="color:#222222">></span></span> <span class="line"><span style="color:#222222">&#x3C;/</span><span style="color:#0468D7">resources</span><span style="color:#222222">></span></span></code></pre></div></div></li><li><p>Add a file at <code>android/app/src/main/res/values/games-ids.xml</code> containing the XML you received in the previous step.</p></li></ol><div class="header-wrapper"><h2 id="2-sign-in-to-the-game-service">2. Sign in to the game service</h2><a class="heading-link" href="#2-sign-in-to-the-game-service" aria-label="Link to '2. Sign in to the game service' section">#</a></div><p>Now that you have set up <em>Game Center</em> and <em>Play Games Services</em>, and have your achievement &amp; leaderboard IDs ready, it's finally Dart time.</p><ol><li><p>Add a dependency on the <a href="https://pub.dev/packages/games_services"><code>games_services</code> package</a>.</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222" class="undefined terminal-command">flutter pub add games_services</span></span></code></pre></div></div></li><li><p>Before you can do anything else, you have to sign the player into the game service.</p> <?code-excerpt "lib/various.dart (signIn)"?> <div class="code-block-wrapper language-dart"><div class="code-block-body"><span class="code-block-language" title="Language dart">dart</span><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#BD2314">try</span><span style="color:#222222"> {</span></span> <span class="line"><span style="color:#BD2314"> await</span><span style="color:#0468D7"> GamesServices</span><span style="color:#222222">.</span><span style="color:#6200EE">signIn</span><span style="color:#222222">();</span></span> <span class="line"><span style="color:#222222">} </span><span style="color:#BD2314">on</span><span style="color:#0468D7"> PlatformException</span><span style="color:#BD2314"> catch</span><span style="color:#222222"> (e) {</span></span> <span class="line"><span style="color:#6E6E70"> // ... deal with failures ...</span></span> <span class="line"><span style="color:#222222">}</span></span></code></pre></div></div></li></ol><p>The sign in happens in the background. It takes several seconds, so don't call <code>signIn()</code> before <code>runApp()</code> or the players will be forced to stare at a blank screen every time they start your game.</p><p>The API calls to the <code>games_services</code> API can fail for a multitude of reasons. Therefore, every call should be wrapped in a try-catch block as in the previous example. The rest of this recipe omits exception handling for clarity.</p><aside class="alert alert-success"><div class="alert-header"><i class="material-symbols" aria-hidden="true">lightbulb</i> <span>Tip</span></div><div class="alert-content"><p>It's a good practice to create a controller. This would be a <code>ChangeNotifier</code>, a bloc, or some other piece of logic that wraps around the raw functionality of the <code>games_services</code> plugin.</p></div></aside><div class="header-wrapper"><h2 id="3-unlock-achievements">3. Unlock achievements</h2><a class="heading-link" href="#3-unlock-achievements" aria-label="Link to '3. Unlock achievements' section">#</a></div><ol><li><p>Register achievements in Google Play Console and App Store Connect, and take note of their IDs. Now you can award any of those achievements from your Dart code:</p> <?code-excerpt "lib/various.dart (unlock)"?> <div class="code-block-wrapper language-dart"><div class="code-block-body"><span class="code-block-language" title="Language dart">dart</span><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#BD2314">await</span><span style="color:#0468D7"> GamesServices</span><span style="color:#222222">.</span><span style="color:#6200EE">unlock</span><span style="color:#222222">(</span></span> <span class="line"><span style="color:#222222"> achievement: </span><span style="color:#0468D7">Achievement</span><span style="color:#222222">(</span></span> <span class="line"><span style="color:#222222"> androidID: </span><span style="color:#0C7064">'your android id'</span><span style="color:#222222">,</span></span> <span class="line"><span style="color:#222222"> iOSID: </span><span style="color:#0C7064">'your ios id'</span><span style="color:#222222">,</span></span> <span class="line"><span style="color:#222222"> ),</span></span> <span class="line"><span style="color:#222222">);</span></span></code></pre></div></div><p>The player's account on Google Play Games or Apple Game Center now lists the achievement.</p></li><li><p>To display the achievements UI from your game, call the <code>games_services</code> API:</p> <?code-excerpt "lib/various.dart (showAchievements)"?> <div class="code-block-wrapper language-dart"><div class="code-block-body"><span class="code-block-language" title="Language dart">dart</span><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#BD2314">await</span><span style="color:#0468D7"> GamesServices</span><span style="color:#222222">.</span><span style="color:#6200EE">showAchievements</span><span style="color:#222222">();</span></span></code></pre></div></div><p>This displays the platform achievements UI as an overlay on your game.</p></li><li><p>To display the achievements in your own UI, use <a href="https://pub.dev/documentation/games_services/latest/games_services/GamesServices/loadAchievements.html"><code>GamesServices.loadAchievements()</code></a>.</p></li></ol><div class="header-wrapper"><h2 id="4-submit-scores">4. Submit scores</h2><a class="heading-link" href="#4-submit-scores" aria-label="Link to '4. Submit scores' section">#</a></div><p>When the player finishes a play-through, your game can submit the result of that play session into one or more leaderboards.</p><p>For example, a platformer game like Super Mario can submit both the final score and the time taken to complete the level, to two separate leaderboards.</p><ol><li><p>In the first step, you registered a leaderboard in Google Play Console and App Store Connect, and took note of its ID. Using this ID, you can submit new scores for the player:</p> <?code-excerpt "lib/various.dart (submitScore)"?> <div class="code-block-wrapper language-dart"><div class="code-block-body"><span class="code-block-language" title="Language dart">dart</span><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#BD2314">await</span><span style="color:#0468D7"> GamesServices</span><span style="color:#222222">.</span><span style="color:#6200EE">submitScore</span><span style="color:#222222">(</span></span> <span class="line"><span style="color:#222222"> score: </span><span style="color:#0468D7">Score</span><span style="color:#222222">(</span></span> <span class="line"><span style="color:#222222"> iOSLeaderboardID: </span><span style="color:#0C7064">'some_id_from_app_store'</span><span style="color:#222222">,</span></span> <span class="line"><span style="color:#222222"> androidLeaderboardID: </span><span style="color:#0C7064">'sOmE_iD_fRoM_gPlAy'</span><span style="color:#222222">,</span></span> <span class="line"><span style="color:#222222"> value: </span><span style="color:#0C7064">100</span><span style="color:#222222">,</span></span> <span class="line"><span style="color:#222222"> ),</span></span> <span class="line"><span style="color:#222222">);</span></span></code></pre></div></div><p>You don't need to check whether the new score is the player's highest. The platform game services handle that for you.</p></li><li><p>To display the leaderboard as an overlay over your game, make the following call:</p> <?code-excerpt "lib/various.dart (showLeaderboards)"?> <div class="code-block-wrapper language-dart"><div class="code-block-body"><span class="code-block-language" title="Language dart">dart</span><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#BD2314">await</span><span style="color:#0468D7"> GamesServices</span><span style="color:#222222">.</span><span style="color:#6200EE">showLeaderboards</span><span style="color:#222222">(</span></span> <span class="line"><span style="color:#222222"> iOSLeaderboardID: </span><span style="color:#0C7064">'some_id_from_app_store'</span><span style="color:#222222">,</span></span> <span class="line"><span style="color:#222222"> androidLeaderboardID: </span><span style="color:#0C7064">'sOmE_iD_fRoM_gPlAy'</span><span style="color:#222222">,</span></span> <span class="line"><span style="color:#222222">);</span></span></code></pre></div></div></li><li><p>If you want to display the leaderboard scores in your own UI, you can fetch them with <a href="https://pub.dev/documentation/games_services/latest/games_services/GamesServices/loadLeaderboardScores.html"><code>GamesServices.loadLeaderboardScores()</code></a>.</p></li></ol><div class="header-wrapper"><h2 id="5-next-steps">5. Next steps</h2><a class="heading-link" href="#5-next-steps" aria-label="Link to '5. Next steps' section">#</a></div><p>There's more to the <code>games_services</code> plugin. With this plugin, you can:</p><ul><li>Get the player's icon, name or unique ID</li><li>Save and load game states</li><li>Sign out of the game service</li></ul><p>Some achievements can be incremental. For example: &quot;You have collected all 10 pieces of the McGuffin.&quot;</p><p>Each game has different needs from game services.</p><p>To start, you might want to create this controller in order to keep all achievements &amp; leaderboards logic in one place:</p> <?code-excerpt "lib/games_services_controller.dart"?> <div class="code-block-wrapper language-dart"><div class="code-block-body"><span class="code-block-language" title="Language dart">dart</span><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#BD2314">import</span><span style="color:#0C7064"> 'dart:async'</span><span style="color:#222222">;</span></span> <span class="line"></span> <span class="line"><span style="color:#BD2314">import</span><span style="color:#0C7064"> 'package:games_services/games_services.dart'</span><span style="color:#222222">;</span></span> <span class="line"><span style="color:#BD2314">import</span><span style="color:#0C7064"> 'package:logging/logging.dart'</span><span style="color:#222222">;</span></span> <span class="line"></span> <span class="line"><span style="color:#6E6E70">/// Allows awarding achievements and leaderboard scores,</span></span> <span class="line"><span style="color:#6E6E70">/// and also showing the platforms' UI overlays for achievements</span></span> <span class="line"><span style="color:#6E6E70">/// and leaderboards.</span></span> <span class="line"><span style="color:#6E6E70">///</span></span> <span class="line"><span style="color:#6E6E70">/// A facade of </span><span style="color:#222222">`package:games_services`</span><span style="color:#6E6E70">.</span></span> <span class="line"><span style="color:#BD2314">class</span><span style="color:#0468D7"> GamesServicesController</span><span style="color:#222222"> {</span></span> <span class="line"><span style="color:#BD2314"> static</span><span style="color:#BD2314"> final</span><span style="color:#0468D7"> Logger</span><span style="color:#222222"> _log = </span><span style="color:#0468D7">Logger</span><span style="color:#222222">(</span><span style="color:#0C7064">'GamesServicesController'</span><span style="color:#222222">);</span></span> <span class="line"></span> <span class="line"><span style="color:#BD2314"> final</span><span style="color:#0468D7"> Completer</span><span style="color:#222222">&#x3C;</span><span style="color:#0468D7">bool</span><span style="color:#222222">> _signedInCompleter = </span><span style="color:#0468D7">Completer</span><span style="color:#222222">();</span></span> <span class="line"></span> <span class="line"><span style="color:#0468D7"> Future</span><span style="color:#222222">&#x3C;</span><span style="color:#0468D7">bool</span><span style="color:#222222">> </span><span style="color:#BD2314">get</span><span style="color:#222222"> signedIn => _signedInCompleter.future;</span></span> <span class="line"></span> <span class="line"><span style="color:#6E6E70"> /// Unlocks an achievement on Game Center / Play Games.</span></span> <span class="line"><span style="color:#6E6E70"> ///</span></span> <span class="line"><span style="color:#6E6E70"> /// You must provide the achievement ids via the </span><span style="color:#222222">[iOS]</span><span style="color:#6E6E70"> and </span><span style="color:#222222">[android]</span></span> <span class="line"><span style="color:#6E6E70"> /// parameters.</span></span> <span class="line"><span style="color:#6E6E70"> ///</span></span> <span class="line"><span style="color:#6E6E70"> /// Does nothing when the game isn't signed into the underlying</span></span> <span class="line"><span style="color:#6E6E70"> /// games service.</span></span> <span class="line"><span style="color:#0468D7"> Future</span><span style="color:#222222">&#x3C;</span><span style="color:#BD2314">void</span><span style="color:#222222">> </span><span style="color:#6200EE">awardAchievement</span><span style="color:#222222">(</span></span> <span class="line"><span style="color:#222222"> {</span><span style="color:#BD2314">required</span><span style="color:#0468D7"> String</span><span style="color:#222222"> iOS, </span><span style="color:#BD2314">required</span><span style="color:#0468D7"> String</span><span style="color:#222222"> android}) </span><span style="color:#BD2314">async</span><span style="color:#222222"> {</span></span> <span class="line"><span style="color:#BD2314"> if</span><span style="color:#222222"> (!</span><span style="color:#BD2314">await</span><span style="color:#222222"> signedIn) {</span></span> <span class="line"><span style="color:#222222"> _log.</span><span style="color:#6200EE">warning</span><span style="color:#222222">(</span><span style="color:#0C7064">'Trying to award achievement when not logged in.'</span><span style="color:#222222">);</span></span> <span class="line"><span style="color:#BD2314"> return</span><span style="color:#222222">;</span></span> <span class="line"><span style="color:#222222"> }</span></span> <span class="line"></span> <span class="line"><span style="color:#BD2314"> try</span><span style="color:#222222"> {</span></span> <span class="line"><span style="color:#BD2314"> await</span><span style="color:#0468D7"> GamesServices</span><span style="color:#222222">.</span><span style="color:#6200EE">unlock</span><span style="color:#222222">(</span></span> <span class="line"><span style="color:#222222"> achievement: </span><span style="color:#0468D7">Achievement</span><span style="color:#222222">(</span></span> <span class="line"><span style="color:#222222"> androidID: android,</span></span> <span class="line"><span style="color:#222222"> iOSID: iOS,</span></span> <span class="line"><span style="color:#222222"> ),</span></span> <span class="line"><span style="color:#222222"> );</span></span> <span class="line"><span style="color:#222222"> } </span><span style="color:#BD2314">catch</span><span style="color:#222222"> (e) {</span></span> <span class="line"><span style="color:#222222"> _log.</span><span style="color:#6200EE">severe</span><span style="color:#222222">(</span><span style="color:#0C7064">'Cannot award achievement: </span><span style="color:#0C7064">$</span><span style="color:#222222">e</span><span style="color:#0C7064">'</span><span style="color:#222222">);</span></span> <span class="line"><span style="color:#222222"> }</span></span> <span class="line"><span style="color:#222222"> }</span></span> <span class="line"></span> <span class="line"><span style="color:#6E6E70"> /// Signs into the underlying games service.</span></span> <span class="line"><span style="color:#0468D7"> Future</span><span style="color:#222222">&#x3C;</span><span style="color:#BD2314">void</span><span style="color:#222222">> </span><span style="color:#6200EE">initialize</span><span style="color:#222222">() </span><span style="color:#BD2314">async</span><span style="color:#222222"> {</span></span> <span class="line"><span style="color:#BD2314"> try</span><span style="color:#222222"> {</span></span> <span class="line"><span style="color:#BD2314"> await</span><span style="color:#0468D7"> GamesServices</span><span style="color:#222222">.</span><span style="color:#6200EE">signIn</span><span style="color:#222222">();</span></span> <span class="line"><span style="color:#6E6E70"> // The API is unclear so we're checking to be sure. The above call</span></span> <span class="line"><span style="color:#6E6E70"> // returns a String, not a boolean, and there's no documentation</span></span> <span class="line"><span style="color:#6E6E70"> // as to whether every non-error result means we're safely signed in.</span></span> <span class="line"><span style="color:#BD2314"> final</span><span style="color:#222222"> signedIn = </span><span style="color:#BD2314">await</span><span style="color:#0468D7"> GamesServices</span><span style="color:#222222">.isSignedIn;</span></span> <span class="line"><span style="color:#222222"> _signedInCompleter.</span><span style="color:#6200EE">complete</span><span style="color:#222222">(signedIn);</span></span> <span class="line"><span style="color:#222222"> } </span><span style="color:#BD2314">catch</span><span style="color:#222222"> (e) {</span></span> <span class="line"><span style="color:#222222"> _log.</span><span style="color:#6200EE">severe</span><span style="color:#222222">(</span><span style="color:#0C7064">'Cannot log into GamesServices: </span><span style="color:#0C7064">$</span><span style="color:#222222">e</span><span style="color:#0C7064">'</span><span style="color:#222222">);</span></span> <span class="line"><span style="color:#222222"> _signedInCompleter.</span><span style="color:#6200EE">complete</span><span style="color:#222222">(</span><span style="color:#0C7064">false</span><span style="color:#222222">);</span></span> <span class="line"><span style="color:#222222"> }</span></span> <span class="line"><span style="color:#222222"> }</span></span> <span class="line"></span> <span class="line"><span style="color:#6E6E70"> /// Launches the platform's UI overlay with achievements.</span></span> <span class="line"><span style="color:#0468D7"> Future</span><span style="color:#222222">&#x3C;</span><span style="color:#BD2314">void</span><span style="color:#222222">> </span><span style="color:#6200EE">showAchievements</span><span style="color:#222222">() </span><span style="color:#BD2314">async</span><span style="color:#222222"> {</span></span> <span class="line"><span style="color:#BD2314"> if</span><span style="color:#222222"> (!</span><span style="color:#BD2314">await</span><span style="color:#222222"> signedIn) {</span></span> <span class="line"><span style="color:#222222"> _log.</span><span style="color:#6200EE">severe</span><span style="color:#222222">(</span><span style="color:#0C7064">'Trying to show achievements when not logged in.'</span><span style="color:#222222">);</span></span> <span class="line"><span style="color:#BD2314"> return</span><span style="color:#222222">;</span></span> <span class="line"><span style="color:#222222"> }</span></span> <span class="line"></span> <span class="line"><span style="color:#BD2314"> try</span><span style="color:#222222"> {</span></span> <span class="line"><span style="color:#BD2314"> await</span><span style="color:#0468D7"> GamesServices</span><span style="color:#222222">.</span><span style="color:#6200EE">showAchievements</span><span style="color:#222222">();</span></span> <span class="line"><span style="color:#222222"> } </span><span style="color:#BD2314">catch</span><span style="color:#222222"> (e) {</span></span> <span class="line"><span style="color:#222222"> _log.</span><span style="color:#6200EE">severe</span><span style="color:#222222">(</span><span style="color:#0C7064">'Cannot show achievements: </span><span style="color:#0C7064">$</span><span style="color:#222222">e</span><span style="color:#0C7064">'</span><span style="color:#222222">);</span></span> <span class="line"><span style="color:#222222"> }</span></span> <span class="line"><span style="color:#222222"> }</span></span> <span class="line"></span> <span class="line"><span style="color:#6E6E70"> /// Launches the platform's UI overlay with leaderboard(s).</span></span> <span class="line"><span style="color:#0468D7"> Future</span><span style="color:#222222">&#x3C;</span><span style="color:#BD2314">void</span><span style="color:#222222">> </span><span style="color:#6200EE">showLeaderboard</span><span style="color:#222222">() </span><span style="color:#BD2314">async</span><span style="color:#222222"> {</span></span> <span class="line"><span style="color:#BD2314"> if</span><span style="color:#222222"> (!</span><span style="color:#BD2314">await</span><span style="color:#222222"> signedIn) {</span></span> <span class="line"><span style="color:#222222"> _log.</span><span style="color:#6200EE">severe</span><span style="color:#222222">(</span><span style="color:#0C7064">'Trying to show leaderboard when not logged in.'</span><span style="color:#222222">);</span></span> <span class="line"><span style="color:#BD2314"> return</span><span style="color:#222222">;</span></span> <span class="line"><span style="color:#222222"> }</span></span> <span class="line"></span> <span class="line"><span style="color:#BD2314"> try</span><span style="color:#222222"> {</span></span> <span class="line"><span style="color:#BD2314"> await</span><span style="color:#0468D7"> GamesServices</span><span style="color:#222222">.</span><span style="color:#6200EE">showLeaderboards</span><span style="color:#222222">(</span></span> <span class="line"><span style="color:#6E6E70"> // TODO: When ready, change both these leaderboard IDs.</span></span> <span class="line"><span style="color:#222222"> iOSLeaderboardID: </span><span style="color:#0C7064">'some_id_from_app_store'</span><span style="color:#222222">,</span></span> <span class="line"><span style="color:#222222"> androidLeaderboardID: </span><span style="color:#0C7064">'sOmE_iD_fRoM_gPlAy'</span><span style="color:#222222">,</span></span> <span class="line"><span style="color:#222222"> );</span></span> <span class="line"><span style="color:#222222"> } </span><span style="color:#BD2314">catch</span><span style="color:#222222"> (e) {</span></span> <span class="line"><span style="color:#222222"> _log.</span><span style="color:#6200EE">severe</span><span style="color:#222222">(</span><span style="color:#0C7064">'Cannot show leaderboard: </span><span style="color:#0C7064">$</span><span style="color:#222222">e</span><span style="color:#0C7064">'</span><span style="color:#222222">);</span></span> <span class="line"><span style="color:#222222"> }</span></span> <span class="line"><span style="color:#222222"> }</span></span> <span class="line"></span> <span class="line"><span style="color:#6E6E70"> /// Submits </span><span style="color:#222222">[score]</span><span style="color:#6E6E70"> to the leaderboard.</span></span> <span class="line"><span style="color:#0468D7"> Future</span><span style="color:#222222">&#x3C;</span><span style="color:#BD2314">void</span><span style="color:#222222">> </span><span style="color:#6200EE">submitLeaderboardScore</span><span style="color:#222222">(</span><span style="color:#0468D7">int</span><span style="color:#222222"> score) </span><span style="color:#BD2314">async</span><span style="color:#222222"> {</span></span> <span class="line"><span style="color:#BD2314"> if</span><span style="color:#222222"> (!</span><span style="color:#BD2314">await</span><span style="color:#222222"> signedIn) {</span></span> <span class="line"><span style="color:#222222"> _log.</span><span style="color:#6200EE">warning</span><span style="color:#222222">(</span><span style="color:#0C7064">'Trying to submit leaderboard when not logged in.'</span><span style="color:#222222">);</span></span> <span class="line"><span style="color:#BD2314"> return</span><span style="color:#222222">;</span></span> <span class="line"><span style="color:#222222"> }</span></span> <span class="line"></span> <span class="line"><span style="color:#222222"> _log.</span><span style="color:#6200EE">info</span><span style="color:#222222">(</span><span style="color:#0C7064">'Submitting </span><span style="color:#0C7064">$</span><span style="color:#222222">score</span><span style="color:#0C7064"> to leaderboard.'</span><span style="color:#222222">);</span></span> <span class="line"></span> <span class="line"><span style="color:#BD2314"> try</span><span style="color:#222222"> {</span></span> <span class="line"><span style="color:#BD2314"> await</span><span style="color:#0468D7"> GamesServices</span><span style="color:#222222">.</span><span style="color:#6200EE">submitScore</span><span style="color:#222222">(</span></span> <span class="line"><span style="color:#222222"> score: </span><span style="color:#0468D7">Score</span><span style="color:#222222">(</span></span> <span class="line"><span style="color:#6E6E70"> // TODO: When ready, change these leaderboard IDs.</span></span> <span class="line"><span style="color:#222222"> iOSLeaderboardID: </span><span style="color:#0C7064">'some_id_from_app_store'</span><span style="color:#222222">,</span></span> <span class="line"><span style="color:#222222"> androidLeaderboardID: </span><span style="color:#0C7064">'sOmE_iD_fRoM_gPlAy'</span><span style="color:#222222">,</span></span> <span class="line"><span style="color:#222222"> value: score,</span></span> <span class="line"><span style="color:#222222"> ),</span></span> <span class="line"><span style="color:#222222"> );</span></span> <span class="line"><span style="color:#222222"> } </span><span style="color:#BD2314">catch</span><span style="color:#222222"> (e) {</span></span> <span class="line"><span style="color:#222222"> _log.</span><span style="color:#6200EE">severe</span><span style="color:#222222">(</span><span style="color:#0C7064">'Cannot submit leaderboard score: </span><span style="color:#0C7064">$</span><span style="color:#222222">e</span><span style="color:#0C7064">'</span><span style="color:#222222">);</span></span> <span class="line"><span style="color:#222222"> }</span></span> <span class="line"><span style="color:#222222"> }</span></span> <span class="line"><span style="color:#222222">}</span></span></code></pre></div></div><div class="header-wrapper"><h2 id="more-information">More information</h2><a class="heading-link" href="#more-information" aria-label="Link to 'More information' section">#</a></div><p>The Flutter Casual Games Toolkit includes the following templates:</p><ul><li><a href="https://github.com/flutter/games/tree/main/templates/basic#readme">basic</a>: basic starter game</li><li><a href="https://github.com/flutter/games/tree/main/templates/card#readme">card</a>: starter card game</li><li><a href="https://github.com/flutter/games/tree/main/templates/endless_runner#readme">endless runner</a>: starter game (using Flame) where the player endlessly runs, avoiding pitfalls and gaining rewards</li></ul><p id="page-github-links"><span>Unless stated otherwise, the documentation on this site reflects the latest stable version of Flutter. Page last updated on 2024-04-04.</span> <a href="https://github.com/flutter/website/tree/main/src/content/cookbook/games/achievements-leaderboard.md" target="_blank" rel="noopener">View source</a> <span>or </span><a href="https://github.com/flutter/website/issues/new?template=1_page_issue.yml&&page-url=https://docs.flutter.dev/cookbook/games/achievements-leaderboard/&page-source=https://github.com/flutter/website/tree/main/src/content/cookbook/games/achievements-leaderboard.md" title="Report an issue with this page" target="_blank" rel="noopener">report an issue</a>.</p></div></main></div></div><footer class="site-footer"><div class="container-fluid"><div class="row"><div class="col-md-12 site-footer__wrapper"><div class="site-footer__logo"><img src="/assets/images/branding/flutter/logo/flutter-mono-81x100.png" alt="Flutter Logo" width="81" height="100"></div><div class="site-footer__content"><ul class="site-footer__link-list"><li><a href="/tos">terms</a></li><li><a href="/brand">brand usage</a></li><li><a href="/security">security</a></li><li><a href="https://www.google.com/intl/en/policies/privacy">privacy</a></li><li><a href="https://esflutter.dev/">español</a></li><li><a href="https://flutter.cn" class="text-nowrap">社区中文资源</a></li><li><a href="https://blog.google/inside-google/company-announcements/standing-with-black-community">We stand in solidarity with the Black community. 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