android_frameworks_base/docs/html/design/building-blocks/scrolling.jd

page.title=Scrolling
page.tags=scrollview,listview
@jd:body

<p>Scrolling allows the user to navigate to content in the overflow using a swipe gesture. The
scrolling speed is proportional to the speed of the gesture.</p>
<h2 id="indicator">Scroll Indicator</h2>

<p>Appears during scrolling to indicate what portion of the content is currently in view.</p>

<div class="framed-nexus5-land-span-13">
  <video class="play-on-hover" autoplay>
    <source src="{@docRoot}design/media/scroll_indicator.mp4" type="video/mp4">
    <source src="{@docRoot}design/media/scroll_indicator.webm" type="video/webm">
    <source src="{@docRoot}design/media/scroll_indicator.ogv" type="video/ogg">
  </video>
</div>
<div class="figure-caption">
  <div class="video-instructions">&nbsp;</div>
</div>

<h2 id="index-scrolling">Index Scrolling</h2>

<p>In addition to traditional scrolling, a long alphabetical list can also offer index scrolling: a way
to quickly navigate to the items that begin with a particular letter. With index scrolling, a scroll
indicator appears even when the user isn't scrolling. Touching or dragging it causes the current
letter to pop up in a prominent way.</p>

<div class="framed-nexus5-land-span-13">
  <video class="play-on-hover" autoplay>
    <source src="{@docRoot}design/media/scroll_index.mp4" type="video/mp4">
    <source src="{@docRoot}design/media/scroll_index.webm" type="video/webm">
    <source src="{@docRoot}design/media/scroll_index.ogv" type="video/ogg">
  </video>
</div>
<div class="figure-caption">
  <div class="video-instructions">&nbsp;</div>
</div>