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| <h2>New in Android 4.0</h2> |
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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> |
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| <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> |
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| <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> |
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| <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> |
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