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'mainmenuopen' : '')" i-amphtml-binding> <div class="ap-o-header"> <a class="ap-o-header-home" href="/"> <svg class="ap-o-header-home-logo"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#logo"/></svg> <span class="ap-o-header-home-title">AMP</span> </a> <nav class="ap-o-header-main"> <div class="ap-o-header-main-item"> <button class="ap-o-header-main-link -tw "> About <div class="ap-a-ico ap-o-header-main-link-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </div> </button> <ul class="ap-o-header-flyout"> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link websites" href="/about/websites/"> <div class="ap-o-header-flyout-primary-item-link-icon websites"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#amp-websites"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info ap-o-header-flyout-primary-item-link-info-websites"> <div class="ap-o-header-flyout-item-title">AMP Websites</div> <div class="ap-o-header-flyout-item-description">Create flawless web experiences</div> </div> </a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link stories" href="/about/stories/"> <div class="ap-o-header-flyout-primary-item-link-icon stories"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#amp-stories"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info ap-o-header-flyout-primary-item-link-info-stories"> <div class="ap-o-header-flyout-item-title">Web Stories</div> <div class="ap-o-header-flyout-item-description">Snackable Stories for everyone</div> </div> </a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link ads" href="/about/ads/"> <div class="ap-o-header-flyout-primary-item-link-icon ads"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#amp-ads"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info ap-o-header-flyout-primary-item-link-info-ads"> <div class="ap-o-header-flyout-item-title">AMP Ads</div> <div class="ap-o-header-flyout-item-description">Super fast ads on the web</div> </div> </a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link email" href="/about/email/"> <div class="ap-o-header-flyout-primary-item-link-icon email"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#amp-email"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info ap-o-header-flyout-primary-item-link-info-email"> <div class="ap-o-header-flyout-item-title">AMP Email</div> <div class="ap-o-header-flyout-item-description">Next gen email</div> </div> </a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/about/how-amp-works/">How AMP works</a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/about/mission-and-vision/">Vision & Mission</a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/about/use-cases/">Use cases</a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/success-stories/">Success Stories</a> </li> </ul> </div> <div class="ap-o-header-main-item"> <button class="ap-o-header-main-link -tw active"> Documentation <div class="ap-a-ico ap-o-header-main-link-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </div> </button> <ul class="ap-o-header-flyout"> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/documentation/">Get Started</a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link " href="/documentation/guides-and-tutorials/"> <div class="ap-o-header-flyout-primary-item-link-icon "> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#guides-documents"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info"> <div class="ap-o-header-flyout-item-title">Guides & Tutorials</div> <div class="ap-o-header-flyout-item-description">Get started with AMP</div> </div> </a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link " href="/documentation/components/"> <div class="ap-o-header-flyout-primary-item-link-icon "> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#components-flyout"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info"> <div class="ap-o-header-flyout-item-title">Components</div> <div class="ap-o-header-flyout-item-description">The complete AMP library</div> </div> </a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link " href="/documentation/examples/"> <div class="ap-o-header-flyout-primary-item-link-icon "> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#examples-flyout"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info"> <div class="ap-o-header-flyout-item-title">Examples</div> <div class="ap-o-header-flyout-item-description">Hands-on introduction to AMP</div> </div> </a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link " href="/documentation/courses/"> <div class="ap-o-header-flyout-primary-item-link-icon "> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#learn"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info"> <div class="ap-o-header-flyout-item-title">Courses</div> <div class="ap-o-header-flyout-item-description">Learn AMP with free courses</div> </div> </a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link " href="/documentation/templates/"> <div class="ap-o-header-flyout-primary-item-link-icon "> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#template"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info"> <div class="ap-o-header-flyout-item-title">Templates</div> <div class="ap-o-header-flyout-item-description">Ready to use</div> </div> </a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link " href="/documentation/tools/"> <div class="ap-o-header-flyout-primary-item-link-icon "> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#wrench"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info"> <div class="ap-o-header-flyout-item-title">Tools</div> <div class="ap-o-header-flyout-item-description">Begin building</div> </div> </a> </li> </ul> </div> <div class="ap-o-header-main-item"> <button class="ap-o-header-main-link -tw "> Community <div class="ap-a-ico ap-o-header-main-link-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </div> </button> <ul class="ap-o-header-flyout"> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/documentation/guides-and-tutorials/contribute/">Contribute</a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/community/roadmap/">Roadmap</a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/community/governance/">Governance</a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/community/working-groups/access-subscriptions/">Working Groups</a> </li> </ul> </div> <div class="ap-o-header-main-item"> <button class="ap-o-header-main-link -tw "> Events <div class="ap-a-ico ap-o-header-main-link-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </div> </button> <ul class="ap-o-header-flyout"> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/events/amp-fest-2020/">AMP Fest 2020</a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/events/amp-roadshow/">AMP Roadshow</a> </li> </ul> </div> <div class="ap-o-header-main-item"> <a class="ap-o-header-main-link -tw" href="https://blog.amp.dev">Blog</a> </div> <div class="ap-o-header-main-item"> <button class="ap-o-header-main-link -tw "> Support <div class="ap-a-ico ap-o-header-main-link-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </div> </button> <ul class="ap-o-header-flyout"> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/support/">Help</a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/support/faq/">FAQ</a> </li> </ul> </div> </nav> <div class="-tv"> <span class="-tm" aria-label="Select a language" tabindex="-1"> <span class="-tw">EN</span> <div class="ap-a-ico -ty"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </div> </span> <input class="-tg" type="checkbox" name="language-selector"> <div class="-tb" role="list"> <a class="-tw" href="/de/documentation/components/amp-app-banner/" role="listitem">Deutsch</a> <a class="-tw" href="/fr/documentation/components/amp-app-banner/" role="listitem">Français</a> <a class="-tw" href="/ar/documentation/components/amp-app-banner/" role="listitem">العربية</a> <a class="-tw" href="/es/documentation/components/amp-app-banner/" role="listitem">Español</a> <a class="-tw" href="/it/documentation/components/amp-app-banner/" role="listitem">Italiano</a> <a class="-tw" href="/id/documentation/components/amp-app-banner/" role="listitem">Indonesia</a> <a class="-tw" href="/ja/documentation/components/amp-app-banner/" role="listitem">日本語</a> <a class="-tw" href="/ko/documentation/components/amp-app-banner/" role="listitem">한국어</a> <a class="-tw" href="/pt_br/documentation/components/amp-app-banner/" role="listitem">Português</a> <a class="-tw" href="/ru/documentation/components/amp-app-banner/" role="listitem">Русский</a> <a class="-tw" href="/tr/documentation/components/amp-app-banner/" role="listitem">Türkçe</a> <a class="-tw" href="/zh_cn/documentation/components/amp-app-banner/" role="listitem">中文</a> <a class="-tw" href="/pl/documentation/components/amp-app-banner/" role="listitem">Polski</a> <a class="-tw" href="/vi/documentation/components/amp-app-banner/" role="listitem">Tiếng việt</a> </div> </div> </div> </header> <label class="ap-o-burger-menu-label" on="tap:AMP.setState({mainmenuopen: !mainmenuopen, noScrollState: !noScrollState})" [class]="'ap-o-burger-menu-label ' + (mainmenuopen ? 'mainmenuopen ' : '')" for="burger-menu" tabindex="0" role="button" aria-label="Burger Menu" i-amphtml-binding> <div class="ap-a-ico ap-o-burger-menu-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#menu"/></svg> </div> </label> <nav class="ap-o-burger-menu" [class]="mainmenuopen ? 'ap-o-burger-menu mainmenuopen' : 'ap-o-burger-menu'" i-amphtml-binding> <ul class="-th"> <li class="-tp"> <label class="ap-o-burger-menu-link -tw "> About </label> <input class="-td" type="checkbox" aria-label="About"> <span class="nav-icon"> <svg class="ap-a-ico"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> <ul class="-th"> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/about/websites/"> AMP Websites </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/about/stories/"> Web Stories </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/about/ads/"> AMP Ads </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/about/email/"> AMP Email </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/about/how-amp-works/"> How AMP works </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/about/mission-and-vision/"> Vision & Mission </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/about/use-cases/"> Use cases </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/success-stories/"> Success Stories </a> </li> </ul> </li> <li class="-tp"> <label class="ap-o-burger-menu-link -tw active"> Documentation </label> <input class="-td" type="checkbox" aria-label="Documentation" checked> <span class="nav-icon"> <svg class="ap-a-ico"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> <ul class="-th"> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/documentation/"> Get Started </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/documentation/guides-and-tutorials/"> Guides & Tutorials </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/documentation/components/"> Components </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/documentation/examples/"> Examples </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/documentation/courses/"> Courses </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/documentation/templates/"> Templates </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/documentation/tools/"> Tools </a> </li> </ul> </li> <li class="-tp"> <label class="ap-o-burger-menu-link -tw "> Community </label> <input class="-td" type="checkbox" aria-label="Community"> <span class="nav-icon"> <svg class="ap-a-ico"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> <ul class="-th"> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/documentation/guides-and-tutorials/contribute/"> Contribute </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/community/roadmap/"> Roadmap </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/community/governance/"> Governance </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/community/working-groups/access-subscriptions/"> Working Groups </a> </li> </ul> </li> <li class="-tp"> <label class="ap-o-burger-menu-link -tw "> Events </label> <input class="-td" type="checkbox" aria-label="Events"> <span class="nav-icon"> <svg class="ap-a-ico"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> <ul class="-th"> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/events/amp-fest-2020/"> AMP Fest 2020 </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/events/amp-roadshow/"> AMP Roadshow </a> </li> </ul> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tw" href="https://blog.amp.dev">Blog</a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tw " href="/support/"> Help </a> </li> </ul> </nav> <div class="-oc"> <amp-position-observer on="enter:slideTransition.start; exit:slideTransition.start,slideTransition.reverse" intersection-ratios="1" layout="nodisplay" class="i-amphtml-layout-nodisplay" hidden="hidden" i-amphtml-layout="nodisplay"> </amp-position-observer> <amp-animation id="slideTransition" layout="nodisplay" class="i-amphtml-layout-nodisplay" hidden="hidden" i-amphtml-layout="nodisplay"> <script type="application/json">{"duration":"150ms","fill":"both","easing":"ease-out","iterations":"1","animations":[{"selector":".label-title","keyframes":[{"transform":"scale3d(0, 1, 1)"},{"transform":"scale3d(1, 1, 1)"}]}]}</script> </amp-animation> </div> <amp-user-notification class="-fv i-amphtml-layout-nodisplay" id="format-filter-hint" layout="nodisplay" hidden="hidden" i-amphtml-layout="nodisplay"> </amp-user-notification> <div class="-fd" aria-hidden="true"> <div class="-fm"> <div class="-fg">Select your format for a more streamlined experience</div> <button class="-fy" on="tap:format-filter-hint.dismiss"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#close"/></svg> </button> </div> </div> <main class="ap--main -fb"> <div class="-tf"> <input class="-od ap-a-sidebar-mobile-toggle-input-sidebar" type="checkbox" name="sidebar" id="sidebar" autocomplete="off"> <input class="-om ap-a-sidebar-desktop-toggle-input-sidebar" type="checkbox" name="sidebar-desktop" id="sidebar-desktop" autocomplete="off"> <span id="ap--sidebar-content" class="-oy"></span> <section class="ap--toc"> <div class="ap-o-toc" [class]="contentmenuopen ? 'ap-o-toc contentmenuopen' : 'ap-o-toc'" i-amphtml-binding> <label class="ap-o-toc-toggle" for="toc" on="tap:AMP.setState({contentmenuopen: !contentmenuopen})" role="contentmenutrigger" tabindex="0"> <span class="ap-o-toc-hl">Table of contents</span> <span class="nav-icon"> <svg class="ap-a-ico"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> </label> <input class="-oh -of" type="checkbox" name="toc" id="toc" autocomplete="off"> <ul><li><a href="#usage">Usage</a><ul> <li><a href="#specify-data-sources">Specify data sources</a><ul> <li><a href="#example-app-manifest">Example app manifest </a></li> <li><a href="#example-manifest.json">Example manifest.json</a></li> </ul> </li> <li><a href="#ui-behavior">UI behavior</a><ul> <li><a href="#required-attribute-in-the-ui">Required attribute in the UI</a></li> <li><a href="#dismissal-button-restrictions">Dismissal button restrictions</a></li> <li><a href="#os,-browser,-and-viewer-dependencies">OS, browser, and viewer dependencies</a></li> </ul> </li> </ul> </li> <li><a href="#attributes">Attributes</a><ul> <li><a href="#id">id</a></li> <li><a href="#layout">layout</a></li> </ul> </li> <li><a href="#validation">Validation</a></li></ul> </div> </section> <section class="-t"> <label class="-op -ol ap-a-sidebar-mobile-toggle-label-sidebar" for="sidebar" on="tap:sidebar-left.toggle" role="categoriemenutrigger" tabindex="0"> <span class="label-icon"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#sidebar-toggle"/></svg></span> <span class="label-title">Toggle Sidebar</span> </label> <label class="-op -og ap-a-sidebar-desktop-toggle-label-sidebar" for="sidebar-desktop" role="categoriemenutrigger-desktop" tabindex="0"> <span class="label-icon"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#sidebar-toggle"/></svg></span> <span class="label-title">Toggle Sidebar</span> </label> <nav class="-ou"> <a class="ap-m-breadcrumbs-crumb" href="/documentation/">Documentation</a> <span class="ap-m-breadcrumbs-divider"> <svg class="ap-a-ico -oa"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> <a class="ap-m-breadcrumbs-crumb" href="/documentation/components/">Components</a> </nav> <h1> amp-app-banner <div class="ap--versions"> <select class="ap--versions-toggle" on="change:AMP.navigateTo(url=event.value)"> <option value="../amp-app-banner-v1.0/?format=websites"> 1.0 </option> <option selected value="../amp-app-banner/?format=websites"> 0.1 </option> </select> </div> </h1> <div class="ap-o-component-intro"> <div class="ap-o-component-intro-row"> <h4 class="ap-o-component-intro-headline">Description</h4> <p class="ap-o-component-intro-text">A wrapper and minimal UI for a cross-platform, fixed-position banner showing a call-to-action to install an app.</p> </div>   <div class="ap-o-component-intro-row ap-o-component-intro-row-inline"> <h4 class="ap-o-component-intro-headline">Required Scripts</h4> <div id="amp-script" class="ap-a-copy-script"> <pre><script async custom-element="amp-app-banner" src="https://cdn.ampproject.org/v0/amp-app-banner-0.1.js"></script></pre> <amp-iframe width="24" height="24" layout="fixed" sandbox="allow-scripts" src="https://amp.dev/shared/copy-script/#%3Cscript%20async%20custom-element%3D%22amp-app-banner%22%20src%3D%22https%3A//cdn.ampproject.org/v0/amp-app-banner-0.1.js%22%3E%3C/script%3E" class="i-amphtml-layout-fixed i-amphtml-layout-size-defined" style="width:24px;height:24px;" i-amphtml-layout="fixed"> <div placeholder></div> </amp-iframe> </div> </div> <div class="ap-o-component-intro-row ap-o-component-intro-row-inline"> <h4 class="ap-o-component-intro-headline">Supported Layouts</h4> <div> <a class='ap-a-pill ap-a-pill-flat ap-a-pill-small ap-a-pill-link' href='/documentation/guides-and-tutorials/learn/amp-html-layout/layouts_demonstrated#nodisplay'>nodisplay</a> </div> </div> <div class="ap-o-component-intro-row"> <div id="examples" class="ap-m-clip"> <h4 class="ap-o-component-intro-headline">Examples</h4> <div class="ap-o-component-intro-list"> <a class='ap-o-component-intro-list-item' href='/documentation/examples/components/amp-app-banner/'>amp-app-banner</a> </div> </div> </div> </div> <h2 id="usage">Usage</h2> <p>A wrapper and minimal UI for a cross-platform, fixed-position banner that shows a call-to-action to install an app.</p> <p>The <code>amp-app-banner</code> component includes conditional logic to direct users to the right app on the right platform. If the user dismisses the banner, the banner is hidden permanently.</p> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">head</span><span class="p">></span> <span class="p"><</span><span class="nt">meta</span> <span class="na">name</span><span class="o">=</span><span class="s">"apple-itunes-app"</span> <span class="na">content</span><span class="o">=</span><span class="s">"app-id=123456789, app-argument=app-name://link/to/app-content"</span> <span class="p">/></span> <span class="p"><</span><span class="nt">link</span> <span class="na">rel</span><span class="o">=</span><span class="s">"manifest"</span> <span class="na">href</span><span class="o">=</span><span class="s">"https://link/to/manifest.json"</span> <span class="p">/></span> <span class="p"></</span><span class="nt">head</span><span class="p">></span> . . . <span class="p"><</span><span class="nt">body</span><span class="p">></span> <span class="p"><</span><span class="nt">amp-app-banner</span> <span class="na">layout</span><span class="o">=</span><span class="s">"nodisplay"</span> <span class="na">id</span><span class="o">=</span><span class="s">"demo-app-banner-2134"</span><span class="p">></span> <span class="p"><</span><span class="nt">amp-img</span> <span class="na">src</span><span class="o">=</span><span class="s">"https://example.com/icon.png"</span> <span class="na">width</span><span class="o">=</span><span class="s">"60"</span> <span class="na">height</span><span class="o">=</span><span class="s">"51"</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-img</span><span class="p">></span> <span class="p"><</span><span class="nt">h3</span><span class="p">></span>App Name<span class="p"></</span><span class="nt">h3</span><span class="p">></span> <span class="p"><</span><span class="nt">p</span><span class="p">></span>Experience a richer experience on our mobile app!<span class="p"></</span><span class="nt">p</span><span class="p">></span> <span class="p"><</span><span class="nt">div</span> <span class="na">class</span><span class="o">=</span><span class="s">"actions"</span><span class="p">></span> <span class="p"><</span><span class="nt">button</span> <span class="na">open-button</span><span class="p">></span>Get the app<span class="p"></</span><span class="nt">button</span><span class="p">></span> <span class="p"></</span><span class="nt">div</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-app-banner</span><span class="p">></span> <span class="p"></</span><span class="nt">body</span><span class="p">></span> </pre></div> <p>For a full-page example, see <a href="https://github.com/ampproject/amphtml/blob/main/extensions/amp-app-banner/../../examples/article.amp.html">article.amp.html</a>.</p> <p>Use of <code>amp-app-banner</code> must meet the following requirements:</p> <ul> <li> <p>Don't include <a href="https://github.com/ampproject/amphtml/blob/main/extensions/amp-app-banner/../amp-ad/amp-ad.md"><code>amp-ad/amp-embed</code></a>, <a href="https://github.com/ampproject/amphtml/blob/main/extensions/amp-app-banner/../amp-sticky-ad/amp-sticky-ad.md"><code>amp-sticky-ad</code></a>, or <a href="https://github.com/ampproject/amphtml/blob/main/extensions/amp-app-banner/../amp-iframe/amp-iframe.md"><code>amp-iframe</code></a> as descendants.</p> </li> <li> <p><a href="https://www.w3schools.com/tags/att_height.asp"><code>height</code></a> can't exceed <code>100px</code>.</p> </li> <li> <p>Must be a direct child of the <a href="https://www.w3schools.com/tags/tag_body.asp"><code><body></code></a> tag.</p> </li> <li> <p>The Android manifest <a href="https://www.w3schools.com/tags/att_link_href.asp"><code>href</code></a> attribute must be served over <code>https</code>.</p> </li> <li> <p>Don't include more than one <code>amp-app-banner</code> on a single page.</p> </li> </ul> <h3 id="specify-data-sources">Specify data sources</h3> <p>To extend and promote the usage of the natively supported app banners on <a href="https://developer.apple.com/library/content/documentation/AppleApplications/Reference/SafariWebContent/PromotingAppswithAppBanners/PromotingAppswithAppBanners.html">iOS</a> and <a href="https://web.dev/customize-install/">Android</a>, <code>amp-app-banner</code> uses the exact data sources that the native app banners use on their respective platforms. iOS uses a <a href="https://www.w3schools.com/tags/tag_meta.asp"><code><meta name="apple-itunes-app"></code></a> tag in the head of the document, while Android uses a <a href="https://www.w3schools.com/tags/tag_link.asp"><code><link rel="manifest"></code></a> tag.</p> <ul> <li> <p>On iOS, the AMP runtime parses the <code><meta></code> tag content attribute to extract the App ID and <code>app-argument</code>. These are usually used for deep link URIs, such as app-protocols like <code>whatsapp://</code> or <code>medium://</code>.</p> <ul> <li> <p>The <code><meta></code> tag must have the <a href="https://www.w3schools.com/tags/att_meta_name.asp"><code>name</code></a> and <a href="https://www.w3schools.com/tags/att_meta_content.asp"><code>content</code></a> attributes.</p> </li> <li> <p>The value of the <code>content</code> attribute must contain <code>app-id=</code>.</p> </li> </ul> </li> <li> <p>On Android, the AMP runtime makes an XHR request to fetch the <code>manifest.json</code> file. The runtime parses the content to extract <code>app_id</code> from <code>related_applications</code> and calculates the app store URL as well as open-in-app URL, which has the following form: <code>android-app://${appId}/${protocol}/${host}${pathname}</code></p> <ul> <li>The <code><link></code> tag must have the <a href="https://www.w3schools.com/tags/tag_link.asp"><code>"rel='manifest'"</code></a> attribute and value, as well as the <a href="https://www.w3schools.com/tags/att_link_href.asp"><code>href</code></a> attribute.</li> </ul> </li> </ul> <p> </p><div class="ap-m-tip"> <div class="ap-a-ico ap-m-tip-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#speech-bubble"/></svg> </div> <div class="ap-m-tip-content"> The protocol, host, and pathname are calculated from the canonical URL of the AMP document. Your native app needs to register the links in their manifest. For more information, read up on <a href="https://en.wikipedia.org/wiki/Mobile_deep_linking">mobile deep linking</a>. </div> </div><p></p> <h4 id="example-app-manifest">Example app manifest <a name="example-for-manifest-json"></a></h4> <div class="-ta"><pre><span></span><span class="nt"><activity</span> <span class="na">android:name=</span><span class="s">"com.example.android.GizmosActivity"</span> <span class="na">android:label=</span><span class="s">"@string/title_gizmos"</span> <span class="nt">></span> <span class="nt"><intent-filter</span> <span class="na">android:label=</span><span class="s">"@string/view_article"</span><span class="nt">></span> <span class="c"></span> <span class="nt"><category</span> <span class="na">android:name=</span><span class="s">"android.intent.category.BROWSABLE"</span> <span class="nt">/></span> <span class="c"></span> <span class="nt"><data</span> <span class="na">android:scheme=</span><span class="s">"https"</span> <span class="na">android:host=</span><span class="s">"CANONICAL_HOST"</span> <span class="na">android:pathPrefix=</span><span class="s">"/"</span> <span class="nt">/></span> <span class="nt"></intent-filter></span> <span class="nt"></activity></span> </pre></div> <h4 id="example-manifest.json">Example manifest.json</h4> <div class="-ta"><pre><span></span><span class="p">{</span> <span class="s2">"prefer_related_applications"</span><span class="o">:</span> <span class="kc">true</span><span class="p">,</span> <span class="c1">// This is not necessary for <amp-app-banner>, but signals a preference on non-AMP pages using the same manifest.json file for the native app over a web app if available</span> <span class="s2">"related_applications"</span><span class="o">:</span> <span class="p">[</span> <span class="p">{</span> <span class="s2">"platform"</span><span class="o">:</span> <span class="s2">"play"</span><span class="p">,</span> <span class="s2">"id"</span><span class="o">:</span> <span class="s2">"com.app.path"</span><span class="p">,</span> <span class="s2">"url"</span><span class="o">:</span> <span class="s2">"android-app://com.app.path/https/host.com/path/to/app-content"</span> <span class="p">}</span> <span class="p">]</span> <span class="p">}</span> </pre></div> <h3 id="ui-behavior">UI behavior</h3> <p><code>amp-app-banner</code> provides no default UI. Instead, the developer can build any kind of UI inside the banner and style it accordingly.</p> <p>Currently, the banner is always displayed until it's dismissed. After it's dismissed, the banner never displays on that domain unless the user visits on a different browser or clears their local storage.</p> <h4 id="required-attribute-in-the-ui">Required attribute in the UI</h4> <p>The <code>button[open-button]</code> button is required in the banner. This is the click target that either installs the app or, if it's already installed, opens the deep link.</p> <p> </p><div class="ap-m-tip"> <div class="ap-a-ico ap-m-tip-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#speech-bubble"/></svg> </div> <div class="ap-m-tip-content"> The <code>button[open-button]</code> element can't have the value <code>disabled</code>. </div> </div><p></p> <h4 id="dismissal-button-restrictions">Dismissal button restrictions</h4> <p>The "X" button used to dismiss the banner has limits on how you can customize it. You can style this button with the <code>.amp-app-banner-dismiss-button</code> class. Keep the dismissal button visible and easily accessible on mobile devices so that the banner doesn't block content.</p> <h4 id="os,-browser,-and-viewer-dependencies">OS, browser, and viewer dependencies</h4> <p>The native app banners aren't shown in the viewer context. As such, <code>amp-app-banner</code> is shown inside of the viewer when the appropriate markup is present.</p> <p>However, system-level app banners are shown when viewed with a browser on a compatible OS, such as Android and Chrome, or iOS and Safari. In those cases, the <code>amp-app-banner</code> is hidden to avoid redundancy. The following table shows these dependencies:</p> <table> <thead> <tr> <th>Context</th> <th>Android + Chrome</th> <th>iOS + Safari</th> <th>Other OS + browser</th> </tr> </thead> <tbody> <tr> <td>In AMP viewer</td> <td>Show amp-app-banner</td> <td>Show amp-app-banner</td> <td>Show amp-app-banner</td> </tr> <tr> <td>Outside of AMP viewer</td> <td>Show system banner</td> <td>Show system banner</td> <td>Show amp-app-banner</td> </tr> </tbody> </table> <h2 id="attributes">Attributes</h2> <h3 id="id"><code>id</code></h3> <p>Defines a unique identifier for an <code>amp-app-banner</code> component. The <code>id</code> value is used for persistence logic.</p> <h3 id="layout"><code>layout</code></h3> <p>Specifies the layout of the banner. The value must be <code>nodisplay</code>.</p> <h2 id="validation">Validation</h2> <p>See <a href="https://github.com/ampproject/amphtml/blob/main/extensions/amp-app-banner/validator-amp-app-banner.protoascii"><code>amp-app-banner</code> rules</a> in the AMP validator specification.</p> </section> <section class="ap--help"> <div class="-ff"> <span class="-fl">Need more help?</span> <p class="-fh">You've read this document a dozen times but it doesn't really cover all of your questions? Maybe other people felt the same: reach out to them on Stack Overflow.</p> <a href="https://stackoverflow.com/questions/tagged/amp-html" rel="noopener" class="-n"> <svg class="ap-a-ico -i"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#external"/></svg> <span class="-r">Go to Stack Overflow</span> </a> <div class="-fp"></div> <span class="-fl">Found a bug or missing a feature?</span> <p class="-fh">The AMP project strongly encourages your participation and contributions! We hope you'll become an ongoing participant in our open source community but we also welcome one-off contributions for the issues you're particularly passionate about.</p> <a href="https://github.com/ampproject/amphtml" rel="noopener" class="-n link-preview-1"> <svg class="ap-a-ico -i"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#external"/></svg> <span class="-r">Go to GitHub</span> </a> <div class="-fp"></div> </div> </section> </div> </main> <amp-sidebar id="sidebar-left" class="ap--ampsidebar i-amphtml-layout-nodisplay" layout="nodisplay" side="left" hidden="hidden" i-amphtml-layout="nodisplay"> <nav class="ap--ampsidebar-toolbar" toolbar="(min-width: 768px)" toolbar-target="ap--sidebar-content"> <ul> <div class="ap-m-format-toggle"> <button class="ap-m-format-toggle-selected ap-m-format-toggle-link-websites"> <span class="ap-a-ico"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#amp-websites"/></svg> </span> <span>websites</span> <span 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