| page.title=Using Touch Gestures |
| page.tags=input,navigation,gesturedetector,scroller |
| |
| trainingnavtop=true |
| startpage=true |
| |
| |
| @jd:body |
| <div id="tb-wrapper"> |
| <div id="tb"> |
| |
| <!-- Required platform, tools, add-ons, devices, knowledge, etc. --> |
| <h2>Dependencies and prerequisites</h2> |
| |
| <ul> |
| <li>Android 1.6 (API Level 4) or higher</li> |
| </ul> |
| <h2>You should also read</h2> |
| <ul> |
| <li><a href="http://developer.android.com/guide/topics/ui/ui-events.html">Input Events</a> API Guide |
| </li> |
| <li><a href="{@docRoot}guide/topics/sensors/sensors_overview.html">Sensors Overview</a></li> |
| <li><a href="{@docRoot}training/custom-views/making-interactive.html">Making the View Interactive</a> </li> |
| <li>Design Guide for <a href="{@docRoot}design/patterns/gestures.html">Gestures</a></li> |
| <li>Design Guide for <a href="{@docRoot}design/style/touch-feedback.html">Touch Feedback</a></li> |
| </ul> |
| |
| <h2>Try it out</h2> |
| |
| <div class="download-box"> |
| <a href="{@docRoot}shareables/training/InteractiveChart.zip" |
| class="button">Download the sample</a> |
| <p class="filename">InteractiveChart.zip</p> |
| </div> |
| |
| </div> |
| </div> |
| |
| <p> This class describes how to write apps that allow users to interact with an |
| app via touch gestures. Android provides a variety of APIs to |
| help you create and detect gestures.</p> |
| |
| <p>Although your app should not depend on touch gestures for basic behaviors (since the gestures |
| may not be available to all users in all contexts), adding touch-based |
| interaction to your app can greatly increase its usefulness and appeal.</p> |
| |
| <p>To |
| provide users with a consistent, intuitive experience, your app should follow |
| the accepted Android conventions for touch gestures. The <a |
| href="http://developer.android.com/design/patterns/gestures.html">Gestures |
| design guide</a><a href="{@docRoot}design/patterns/notifications.html"></a> |
| shows you how to use common gestures in Android apps. Also see the Design Guide |
| for <a href="{@docRoot}design/style/touch-feedback.html">Touch Feedback</a>. </p> |
| |
| |
| <h2>Lessons</h2> |
| |
| <dl> |
| <dt> |
| <strong><a href="detector.html">Detecting Common Gestures</a></strong> |
| </dt> |
| <dd> |
| Learn how to detect basic touch gestures such as scrolling, flinging, and double-tapping, using |
| {@link android.view.GestureDetector}. |
| </dd> |
| |
| <dt> |
| <strong><a href="movement.html">Tracking Movement</a></strong> |
| </dt> |
| <dd> |
| Learn how to track movement. |
| </dd> |
| |
| <dt> |
| <strong><a href="scroll.html">Animating a Scroll Gesture</a></strong> |
| </dt> |
| <dd> |
| Learn how to use scrollers ({@link android.widget.Scroller} or {@link |
| android.widget.OverScroller}) to produce a scrolling animation in response to a |
| touch event. </dd> |
| |
| <dt> |
| <strong><a href="multi.html">Handling Multi-Touch Gestures</a></strong> |
| </dt> |
| <dd> |
| Learn how to detect multi-pointer (finger) gestures. |
| </dd> |
| <dt> |
| <strong><a href="scale.html">Dragging and Scaling</a></strong> |
| </dt> |
| <dd> |
| Learn how to implement touch-based dragging and scaling. |
| </dd> |
| |
| |
| <dt><strong><a href="viewgroup.html">Managing Touch Events in a ViewGroup</a></strong></dt> |
| |
| <dd>Learn how to manage touch events in a {@link android.view.ViewGroup} to |
| ensure that touch events are correctly dispatched to their target views.</dd> |
| </dl> |