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<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>
Android Design - New in Android 4.0
</title>
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<body>
<div id="page-container">
<div id="page-header"><a href="../index.html">Android Design</a></div>
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<ul id="nav">
<li class="nav-section">
<div class="nav-section-header"><a href="../index.html">Get Started</a></div>
<ul>
<li><a href="../get-started/creative-vision.html">Creative Vision</a></li>
<li><a href="../get-started/principles.html">Design Principles</a></li>
<li><a href="../get-started/ui-overview.html">UI Overview</a></li>
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<div class="nav-section-header"><a href="../style/index.html">Style</a></div>
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<li><a href="../style/devices-displays.html">Devices and Displays</a></li>
<li><a href="../style/themes.html">Themes</a></li>
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<li><a href="../style/metrics-grids.html">Metrics and Grids</a></li>
<li><a href="../style/typography.html">Typography</a></li>
<li><a href="../style/color.html">Color</a></li>
<li><a href="../style/iconography.html">Iconography</a></li>
<li><a href="../style/writing.html">Writing Style</a></li>
</ul>
</li>
<li class="nav-section">
<div class="nav-section-header"><a href="../patterns/index.html">Patterns</a></div>
<ul>
<li><a href="../patterns/new-4-0.html">New in Android 4.0</a></li>
<li><a href="../patterns/gestures.html">Gestures</a></li>
<li><a href="../patterns/app-structure.html">App Structure</a></li>
<li><a href="../patterns/navigation.html">Navigation</a></li>
<li><a href="../patterns/actionbar.html">Action Bar</a></li>
<li><a href="../patterns/multi-pane-layouts.html">Multi-pane Layouts</a></li>
<li><a href="../patterns/swipe-views.html">Swipe Views</a></li>
<li><a href="../patterns/selection.html">Selection</a></li>
<li><a href="../patterns/notifications.html">Notifications</a></li>
<li><a href="../patterns/compatibility.html">Compatibility</a></li>
<li><a href="../patterns/pure-android.html">Pure Android</a></li>
</ul>
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<div class="nav-section-header"><a href="../building-blocks/index.html">Building Blocks</a></div>
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<li><a href="../building-blocks/scrolling.html">Scrolling</a></li>
<li><a href="../building-blocks/spinners.html">Spinners</a></li>
<li><a href="../building-blocks/buttons.html">Buttons</a></li>
<li><a href="../building-blocks/text-fields.html">Text Fields</a></li>
<li><a href="../building-blocks/seek-bars.html">Seek Bars</a></li>
<li><a href="../building-blocks/progress.html">Progress & Activity</a></li>
<li><a href="../building-blocks/switches.html">Switches</a></li>
<li><a href="../building-blocks/dialogs.html">Dialogs</a></li>
<li><a href="../building-blocks/pickers.html">Pickers</a></li>
</ul>
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<div class="nav-section-header empty"><a href="../downloads/index.html">Downloads</a></div>
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</li>
</ul>
<div id="content">
<div class="layout-content-row content-header">
<div class="layout-content-col span-9">
<h2>New in Android 4.0</h2>
</div>
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<a href="#" class="prev-page-link">Previous</a>
<a href="#" class="next-page-link">Next</a>
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<h4>Navigation bar</h4>
<p>Android 4.0 removes the need for traditional hardware keys on phones by replacing them with a
virtual navigation bar that houses the Back, Home and Recents buttons. Read the
<a href="../patterns/compatibility.html">Compatibility</a> pattern to learn how the OS adapts to
phones with hardware buttons and how pre-Android 3.0 apps that rely on menu keys are supported.</p>
</div>
<div class="layout-content-col span-6">
<img src="../static/content/whats_new_nav_bar.png">
</div>
</div>
<div class="vspace size-2"> </div>
<div class="layout-content-row">
<div class="layout-content-col span-7">
<h4>Action bar</h4>
<p>The action bar is the most important structural element of an Android app. It provides consistent
navigation across the platform and allows your app to surface actions.</p>
</div>
<div class="layout-content-col span-6">
<img src="../static/content/whats_new_action_bar.png">
</div>
</div>
<div class="vspace size-2"> </div>
<div class="layout-content-row">
<div class="layout-content-col span-7">
<h4>Multi-pane layouts</h4>
<p>Creating apps that scale well across different form factors and screen sizes is important in the
Android world. Multi-pane layouts allow you to combine different activities that show separately on
smaller devices into richer compound views for tablets.</p>
</div>
<div class="layout-content-col span-6">
<img src="../static/content/whats_new_multipanel.png">
</div>
</div>
<div class="vspace size-2"> </div>
<div class="layout-content-row">
<div class="layout-content-col span-7">
<h4>Selection</h4>
<p>The long press gesture which was traditionally used to show contextual actions for objects is now
used for data selection. When selecting data, contextual action bars allow you to surface actions.</p>
</div>
<div class="layout-content-col span-6">
<img src="../static/content/whats_new_multiselect.png">
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