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| <div class="layout-content-col span-9"> |
| <h2>Multi-pane Layouts</h2> |
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| <p>When writing an app for Android, keep in mind that Android devices come in many different screen |
| sizes and types. Make sure that your app consistently provides a balanced and aesthetically pleasing |
| layout by adjusting its content to varying screen sizes and orientations.</p> |
| <p><em>Panels</em> are a great way for your app to achieve this. They allow you to combine multiple views into |
| one compound view when a lot of horizontal screen real estate is available and by splitting them up |
| when less space is available.</p> |
| <h2>Combining Multiple Views Into One</h2> |
| <p>On smaller devices your content is typically divided into a master grid or list view and a detail |
| view. Touching an item in the master view opens a different screen showing that item's detail |
| information.</p> |
| |
| <img src="../static/content/multipane_views.png"> |
| |
| <p>Because tablets have more screen real estate than phones, you can use panels to combine the related |
| list and detail views into a single compound view. This uses the additional space more efficiently |
| and makes navigating the app easier. </p> |
| |
| <img src="../static/content/multipane_view_tablet.png"> |
| |
| <p>In general, use the pane on the right to present more information about the item you selected in the |
| left pane. Make sure to keep the item in the left pane selected in order to establish the |
| relationship between the panels.</p> |
| <h2>Compound Views and Orientation Changes</h2> |
| <p>Screens should have the same functionality regardless of orientation. If you use a compound view in |
| one orientation, don't split it up when the user rotates the screen. There are several techniques |
| you can use to adjust the layout after orientation change while keeping functional parity intact.</p> |
| |
| <div class="layout-content-row"> |
| <div class="layout-content-col span-8"> |
| |
| <img src="../static/content/multipane_stretch.png"> |
| |
| </div> |
| <div class="layout-content-col span-5"> |
| |
| <h4>Stretch/compress</h4> |
| <p>Adjust the column width of your left pane to achieve a balanced layout in both orientations.</p> |
| |
| </div> |
| </div> |
| |
| <div class="layout-content-row"> |
| <div class="layout-content-col span-8"> |
| |
| <img src="../static/content/multipane_stack.png"> |
| |
| </div> |
| <div class="layout-content-col span-5"> |
| |
| <h4>Stack</h4> |
| <p>Rearrange the panels on your screen to match the orientation.</p> |
| |
| </div> |
| </div> |
| |
| <div class="layout-content-row"> |
| <div class="layout-content-col span-8"> |
| |
| <img src="../static/content/multipane_expand.png"> |
| |
| </div> |
| <div class="layout-content-col span-5"> |
| |
| <h4>Expand/collapse</h4> |
| <p>When the device rotates, collapse the left pane view to only show the most important information. |
| Provide an <em>expand</em> control that allows the user to bring the left pane content back to its original |
| width and vice versa.</p> |
| |
| </div> |
| </div> |
| |
| <div class="layout-content-row"> |
| <div class="layout-content-col span-8"> |
| |
| <img src="../static/content/multipane_show.png"> |
| |
| </div> |
| <div class="layout-content-col span-5"> |
| |
| <h4>Show/hide</h4> |
| <p>After rotating the device, show the right pane in fullscreen view. Use the Up icon in the action bar |
| to show the left panel and allow navigation to a different email. Hide the left panel by touching |
| the content in the detail panel.</p> |
| |
| </div> |
| </div> |
| |
| <h2>Checklist</h2> |
| <ul> |
| <li> |
| <p>Plan in advance on how your app scales to different screen sizes and screen orientations.</p> |
| </li> |
| <li> |
| <p>Identify the most appropriate method for the panels in your compound views to reorganize |
| themselves when screen orientation changes.</p> |
| </li> |
| <li> |
| <p>Look for opportunities to consolidate your views into multi-panel compound views.</p> |
| </li> |
| <li> |
| <p>Make sure that your screens provide functional parity after the screen orientation |
| changes.</p> |
| </li> |
| </ul> |
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