docs/html/design/patterns/gestures.jd

page.title=Gestures
page.tags="gesture","input","touch"
@jd:body

<p>Gestures allow users to interact with your app by manipulating the screen objects you provide. The
following table shows the core gesture set that is supported in Android.</p>

<div class="vspace size-2">&nbsp;</div>

<div class="layout-content-row">

  <div class="layout-content-col span-4">
    <img src="{@docRoot}design/media/gesture_touch.png">
    <h4>Touch</h4>
    <p>Triggers the default functionality for a given item.</p>
    <ul>
      <li class="no-bullet with-icon action">
        <h4>Action</h4>
        <p>Press, lift</p></li>
    </ul>
  </div>

  <div class="layout-content-col span-4">
    <img src="{@docRoot}design/media/gesture_longtouch.png">
    <h4>Long press</h4>
    <p>Enters data selection mode. Allows you to select one or more items in a view and act upon
    the data using a contextual action bar. Avoid using long press for showing contextual menus.</p>
    <ul>
      <li class="no-bullet with-icon action">
        <h4>Action</h4>
        <p>Press, wait, lift</p></li>
    </ul>
  </div>

  <div class="layout-content-col span-4">
    <img src="{@docRoot}design/media/gesture_swipe.png">
    <h4>Swipe or drag</h4>
    <p>Scrolls overflowing content, or navigates between views in the same hierarchy. Swipes are
    quick and affect the screen even after the finger is picked up. Drags are slower and more precise,
    and the screen stops responding when the finger is picked up.</p>
    <ul>
      <li class="no-bullet with-icon action">
        <h4>Action</h4>
        <p>Press, move, lift</p></li>
    </ul>
  </div>

</div>

<div class="vspace size-2">&nbsp;</div>

<div class="layout-content-row">

  <div class="layout-content-col span-4">
    <img src="{@docRoot}design/media/gesture_drag.png">
    <h4>Long press drag</h4>
    <p>Rearranges data within a view, or moves data into a container (e.g. folders on Home Screen).</p>
    <ul>
      <li class="no-bullet with-icon action">
        <h4>Action</h4>
        <p>Long press, move, lift</p></li>
    </ul>
  </div>

  <div class="layout-content-col span-4">
    <img src="{@docRoot}design/media/gesture_doubletouch.png">
    <h4>Double touch </h4>
    <p>Scales up the smallest targetable view, if available, or scales a standard amount
      around the gesture. Also used as a secondary gesture for text selection.</p>
    <ul>
      <li class="no-bullet with-icon action">
        <h4>Action</h4>
        <p>Two touches in quick succession</p>
      </li>
    </ul>
  </div>

  <div class="layout-content-col span-4">
    <img src="{@docRoot}design/media/gesture_doubletouchdrag.png">
    <h4>Double touch drag</h4>
    <p>Scales content by pushing away or pulling closer, centered around gesture.</p>
    <ul>
      <li class="no-bullet with-icon action">
        <h4>Action</h4>
        <p>A single touch followed in quick succession by a drag up or down:</p>
        <ul style="padding-left:1.5em;list-style-type:disc;">
          <li>Dragging up decreases content scale</li>
          <li>Dragging down increases content scale</li>
          <li>Reversing drag direction reverses scaling.</li>
        </ul>
      </li>
    </ul>
  </div>
  
</div>


<div class="vspace size-2">&nbsp;</div>

<div class="layout-content-row">

  <div class="layout-content-col span-4">
    <img src="{@docRoot}design/media/gesture_pinchopen.png" style="margin-left:-4px">
    <h4>Pinch open</h4>
    <p>Zooms into content.</p>
    <ul>
      <li class="no-bullet with-icon action">
        <h4>Action</h4>
        <p>2-finger press, move outwards, lift</p></li>
    </ul>
  </div>

  <div class="layout-content-col span-4">
    <img src="{@docRoot}design/media/gesture_pinchclose.png">
    <h4>Pinch close</h4>
    <p>Zooms out of content.</p>
    <ul>
      <li class="no-bullet with-icon action">
        <h4>Action</h4>
        <p>2-finger press, move inwards, lift</p>
      </li>
    </ul>
  </div>

</div>