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| Android Design - Pure Android |
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| <li><a href="../get-started/creative-vision.html">Creative Vision</a></li> |
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| <h2>Pure Android</h2> |
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| <p>Most developers want to distribute their apps on multiple platforms. As you plan your app for |
| Android, keep in mind that different platforms play by different rules and conventions. Design |
| decisions that make perfect sense on one platform will look and feel misplaced in the context of a |
| different platform. While a "design once, ship anywhere" approach might save you time up-front, you |
| run the very real risk of creating inconsistent apps that alienate users. Consider the following |
| guidelines to avoid the most common traps and pitfalls.</p> |
| |
| <div class="vspace size-1"> </div> |
| |
| <div class="layout-content-row"> |
| <div class="layout-content-col span-5"> |
| |
| <h4>Don't mimic UI elements from other platforms</h4> |
| <p>Platforms typically provide a carefully designed set of UI elements that are themed in a very |
| distinctive fashion. For example, some platforms advocate rounded corners for their buttons, others |
| use gradients in their title bars. In some cases, elements may have the same purpose, but are |
| designed to work a bit differently.</p> |
| <p>As you build your app for Android, don't carry over themed UI elements from other platforms and |
| don't mimic their specific behaviors. Review the <a href="../building- |
| blocks/index.html">Building Blocks</a> section in this styleguide to learn about Android's most important UI elements |
| and the way they look in the system default themes. Also examine Android's platform apps to get a |
| sense of how elements are applied in the context of an app. If you want to customize the theme of UI |
| elements, customize carefully according to your specific branding - and not according to the |
| conventions of a different platform.</p> |
| |
| </div> |
| <div class="layout-content-col span-8"> |
| |
| <img src="../static/content/migrating_ui_elements.png"> |
| <div class="figure-caption"> |
| Sampling of UI elements from Android, iOS and Windows Phone 7. |
| </div> |
| |
| </div> |
| </div> |
| |
| <div class="vspace size-2"> </div> |
| |
| <div class="layout-content-row"> |
| <div class="layout-content-col span-5"> |
| |
| <h4>Don't carry over platform-specific icons</h4> |
| <p>Platforms typically provide sets of icons for common functionality, such as sharing, creating a new |
| document or deleting.</p> |
| <p>As you are migrating your app to Android, please swap out platform-specific icons with their Android |
| counterparts.</p> |
| <p>You can find a wide variety of icons for use in your app in the Android SDK.</p> |
| |
| </div> |
| <div class="layout-content-col span-8"> |
| |
| <img src="../static/content/migrating_icons.png"> |
| <div class="figure-caption"> |
| Sampling of icons from Android, iOS and Windows Phone 7. |
| </div> |
| |
| </div> |
| </div> |
| |
| <div class="vspace size-2"> </div> |
| |
| <div class="layout-content-row"> |
| <div class="layout-content-col span-5"> |
| |
| <h4>Don't use bottom tab bars</h4> |
| <p>Other platforms use the bottom tab bar to switch between the app's views. Per platform convention, |
| Android's tabs for view control are shown in action bars at the top of the screen instead. In |
| addition, Android apps may use a bottom bar to display actions on a split action bar.</p> |
| <p>You should follow this guideline to create a consistent experience with other apps on the Android |
| platform and to avoid confusion between actions and view switching on Android.</p> |
| <p>For more information on how to properly use action bars for view control, see |
| <a href="../patterns/actionbar.html">Action Bars</a>.</p> |
| |
| </div> |
| <div class="layout-content-col span-8"> |
| |
| <img src="../static/content/migrating_ios_dialers.png"> |
| <div class="figure-caption"> |
| Android dialer with tabs in an action bar vs. bottom tabs in iOS. |
| </div> |
| |
| </div> |
| </div> |
| |
| <div class="layout-content-row"> |
| <div class="layout-content-col span-5"> |
| |
| <h4>Don't use labeled back buttons on action bars</h4> |
| <p>Other platforms use an explicit back button with label to allow the user to navigate up the |
| application's hierarchy. Instead, Android uses the main action bar's app icon for hierarchical |
| navigation and the navigation bar's back button for temporal navigation. For more information, |
| please review the <a href="../patterns/navigation.html">Navigation</a> pattern.</p> |
| <p>Follow this guideline to provide a consistent navigation experience across the platform.</p> |
| |
| </div> |
| <div class="layout-content-col span-8"> |
| |
| <img src="../static/content/migrating_ios_galleries.png"> |
| <div class="figure-caption"> |
| Android action bar with up caret vs. iOS labeled "Back" button. |
| </div> |
| |
| </div> |
| </div> |
| |
| <div class="layout-content-row"> |
| <div class="layout-content-col span-5"> |
| |
| <h4>Don't use right-pointing carets on line items</h4> |
| <p>A common pattern on other platforms is the display of right-pointing carets on line items that allow |
| the user to drill deeper into additional content.</p> |
| <p>Android does not use such indicators on drill-down line items. Avoid them to stay consistent with |
| the platform and in order to not have the user guess as to what the meaning of those carets may be.</p> |
| |
| </div> |
| <div class="layout-content-col span-8"> |
| |
| <img src="../static/content/migrating_ios_settings.png"> |
| <div class="figure-caption"> |
| Android settings without right-pointing carets in line items vs. iOS settings. |
| </div> |
| |
| </div> |
| </div> |
| |
| <h2>Device Independence</h2> |
| |
| <p>Remember that your app will run on a wide variety of different screen sizes. Create visual assets |
| for different screen sizes and densities and make use of concepts such as multi-pane layouts to |
| appropriately scale your UI on different device form factors.</p> |
| <p>For more information, read <a href="../style/devices-displays.html">Devices and Displays</a> as |
| well as <a href="../patterns/multi-pane-layouts.html">Multi-pane Layouts</a> in this design guide.</p> |
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