215 lines
8.3 KiB
HTML
215 lines
8.3 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<title>
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Android Design - Backwards Compatibility
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</title>
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<link rel="shortcut icon" type="image/x-icon" href="/favicon.ico">
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<link rel="stylesheet" href="http://fonts.googleapis.com/css?family=Roboto:regular,medium,thin,italic,mediumitalic">
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<link rel="stylesheet" href="../static/yui-3.3.0-reset-min.css">
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<link rel="stylesheet" href="../static/default.css">
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</head>
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<body>
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<div id="page-container">
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<div id="page-header"><a href="../index.html">Android Design</a></div>
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<div id="main-row">
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<ul id="nav">
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<li class="nav-section">
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<div class="nav-section-header"><a href="../index.html">Get Started</a></div>
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<ul>
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<li><a href="../get-started/creative-vision.html">Creative Vision</a></li>
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<li><a href="../get-started/principles.html">Design Principles</a></li>
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<li><a href="../get-started/ui-overview.html">UI Overview</a></li>
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</ul>
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</li>
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<li class="nav-section">
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<div class="nav-section-header"><a href="../style/index.html">Style</a></div>
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<ul>
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<li><a href="../style/devices-displays.html">Devices and Displays</a></li>
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<li><a href="../style/themes.html">Themes</a></li>
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<li><a href="../style/touch-feedback.html">Touch Feedback</a></li>
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<li><a href="../style/metrics-grids.html">Metrics and Grids</a></li>
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<li><a href="../style/typography.html">Typography</a></li>
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<li><a href="../style/color.html">Color</a></li>
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<li><a href="../style/iconography.html">Iconography</a></li>
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<li><a href="../style/writing.html">Writing Style</a></li>
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</ul>
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</li>
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<li class="nav-section">
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<div class="nav-section-header"><a href="../patterns/index.html">Patterns</a></div>
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<ul>
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<li><a href="../patterns/new-4-0.html">New in Android 4.0</a></li>
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<li><a href="../patterns/gestures.html">Gestures</a></li>
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<li><a href="../patterns/app-structure.html">App Structure</a></li>
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<li><a href="../patterns/navigation.html">Navigation</a></li>
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<li><a href="../patterns/actionbar.html">Action Bar</a></li>
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<li><a href="../patterns/multi-pane-layouts.html">Multi-pane Layouts</a></li>
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<li><a href="../patterns/swipe-views.html">Swipe Views</a></li>
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<li><a href="../patterns/selection.html">Selection</a></li>
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<li><a href="../patterns/notifications.html">Notifications</a></li>
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<li><a href="../patterns/compatibility.html">Compatibility</a></li>
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<li><a href="../patterns/pure-android.html">Pure Android</a></li>
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</ul>
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</li>
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<li class="nav-section">
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<div class="nav-section-header"><a href="../building-blocks/index.html">Building Blocks</a></div>
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<ul>
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<li><a href="../building-blocks/tabs.html">Tabs</a></li>
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<li><a href="../building-blocks/lists.html">Lists</a></li>
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<li><a href="../building-blocks/grid-lists.html">Grid Lists</a></li>
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<li><a href="../building-blocks/scrolling.html">Scrolling</a></li>
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<li><a href="../building-blocks/spinners.html">Spinners</a></li>
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<li><a href="../building-blocks/buttons.html">Buttons</a></li>
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<li><a href="../building-blocks/text-fields.html">Text Fields</a></li>
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<li><a href="../building-blocks/seek-bars.html">Seek Bars</a></li>
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<li><a href="../building-blocks/progress.html">Progress & Activity</a></li>
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<li><a href="../building-blocks/switches.html">Switches</a></li>
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<li><a href="../building-blocks/dialogs.html">Dialogs</a></li>
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<li><a href="../building-blocks/pickers.html">Pickers</a></li>
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</ul>
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</li>
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<li>
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<div id="back-dac-section"><a href="../../index.html">Developers</a></div>
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</li>
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</ul>
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<div id="content">
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<div class="layout-content-row content-header">
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<div class="layout-content-col span-9">
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<h2>Backwards Compatibility</h2>
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</div>
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<div class="paging-links layout-content-col span-4">
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<a href="#" class="prev-page-link">Previous</a>
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<a href="#" class="next-page-link">Next</a>
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</div>
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</div>
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<p>Significant changes in Android 3.0 included:</p>
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<ul>
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<li>Deprecation of navigation hardware keys (Back, Menu, Search, Home) in favor of handling navigation
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via virtual controls (Back, Home, Recents).</li>
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<li>Robust pattern for the use of menus in action bars.</li>
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</ul>
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<p>Android 4.0 brings these changes for tablets to the phone platform.</p>
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<h2>Adapting Android 4.0 to Older Hardware and Apps</h2>
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<div class="layout-content-row">
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<div class="layout-content-col span-6">
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<h4>Phones with virtual navigation controls</h4>
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<p>Android apps written for Android 3.0 and later display actions in the action bar. Actions that don't
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fit in the action bar or aren't important enough to be displayed at the top level appear in the
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action overflow.</p>
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<p>Users access the action overflow by touching it in the action bar.</p>
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</div>
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<div class="layout-content-col span-7">
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<img src="../static/content/compatibility_virtual_nav.png">
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</div>
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</div>
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<div class="layout-content-row">
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<div class="layout-content-col span-6">
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<h4>Phones with physical navigation keys</h4>
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<p>Android phones with traditional navigation hardware keys don't display the virtual navigation bar at
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the bottom of the screen. Instead, the action overflow is available from the menu hardware key. The
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resulting actions popup has the same style as in the previous example, but is displayed at the bottom of the screen.</p>
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</div>
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<div class="layout-content-col span-7">
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<img src="../static/content/compatibility_physical_buttons.png">
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</div>
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</div>
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<div class="layout-content-row">
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<div class="layout-content-col span-6">
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<h4>Legacy apps on phones with virtual navigation controls</h4>
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<p>When you run an app that was built for Android 2.3 or earlier on a phone with virtual navigation
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controls, an action overflow control appears at the right side of the virtual navigation bar. You
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can touch the control to display the app's actions in the traditional Android menu styling.</p>
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</div>
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<div class="layout-content-col span-7">
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<img src="../static/content/compatibility_legacy_apps.png">
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</div>
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</div>
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<div class="layout-content-row content-footer">
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<div class="paging-links layout-content-col span-9"> </div>
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<div class="paging-links layout-content-col span-4">
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<a href="#" class="prev-page-link">Previous</a>
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<a href="#" class="next-page-link">Next</a>
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</div>
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</div>
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</div>
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</div>
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<div id="page-footer">
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<p id="copyright">
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Except as noted, this content is licensed under
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<a href="http://creativecommons.org/licenses/by/2.5/">
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Creative Commons Attribution 2.5</a>.<br>
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For details and restrictions, see the
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<a href="http://developer.android.com/license.html">Content License</a>.
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</p>
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<p>
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<a href="http://www.android.com/terms.html">Site Terms of Service</a> –
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<a href="http://www.android.com/privacy.html">Privacy Policy</a> –
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<a href="http://www.android.com/branding.html">Brand Guidelines</a>
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</p>
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</div>
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</div>
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<script src="../static/jquery-1.6.2.min.js"></script>
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<script>
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var SITE_ROOT = '../';
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</script>
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<script src="../static/default.js"></script>
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</html>
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