page.title=API Overview
excludeFromSuggestions=true
sdk.platform.apiLevel=22
@jd:body


<div id="qv-wrapper">
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<h2>In this document
    <a href="#" onclick="hideNestedItems('#toc44',this);return false;" class="header-toggle">
        <span class="more">show more</span>
        <span class="less" style="display:none">show less</span></a></h2>

<ol id="toc44" class="hide-nested">
  <li><a href="#">Important Behavior Changes</a>
    <ol>
      <li><a href="#">change 1</a></li>
      <li><a href="#">change 2</a></li>
    </ol>
  </li>
  <li><a href="#">Feature Group 1</a>
    <ol>
      <li><a href="#">change 1</a></li>
      <li><a href="#">change 2</a></li>
    </ol>
  </li>
  <li><a href="#">Feature Group 2</a>
    <ol>
      <li><a href="#">change 1</a></li>
      <li><a href="#">change 2</a></li>
    </ol>
  </li>
</ol>

</div>
</div>

<p>The M Developer Preview gives you an advance look at the upcoming release
for the Android platform, which offers new features for users and app
developers. This document provides an introduction to the most notable APIs.</p>

<p>The M Developer Preview is intended for <strong>developer early
adopters</strong> and <strong>testers</strong>. If you are interested in
influencing the direction of the Android framework,
<a href="{@docRoot}preview/setup-sdk.html">give the M Developer Preview a
try</a> and send us your feedback!</p>

<p class="caution"><strong>Caution:</strong> Do not not publish apps
that use the M Developer Preview to the Google Play store.</p>

<p class="note"><strong>Note:</strong> This document often refers to classes and
methods that do not yet have reference material available on <a
href="{@docRoot}">developer.android.com</a>. These API elements are
formatted in {@code code style} in this document (without hyperlinks). For the
preliminary API documentation for these elements, download the <a
href="http://storage.googleapis.com/androiddevelopers/preview/l-developer-preview-reference.zip">preview
reference</a>.</p>

<h2 id="Behaviors">Important Behavior Changes</h2>

<p>If you have previously published an app for Android, be aware that your app
  might be affected by changes in the upcoming release.</p>

<h3 id="id">Behavior Change 1</h3>

<p>
  Bacon ipsum dolor amet biltong picanha t-bone, jowl salami tri-tip jerky kielbasa sirloin boudin
  porchetta fatback cow meatloaf capicola. Short ribs kielbasa pig drumstick rump boudin jowl chuck
  beef ribs doner tenderloin biltong swine.
</p>



<h2 id="id">Feature Group 1</h2>

<h3 id="id">Feature item 1</h3>

<p>
  Bacon ipsum dolor amet landjaeger capicola tail sausage shank swine biltong pork andouille t-bone
  alcatra chicken. Strip steak bacon tongue beef bresaola landjaeger. Shankle boudin pork belly
  jowl pig. Rump swine ham hock frankfurter pork shankle. Shank corned beef alcatra doner flank
  turducken. Tongue brisket ham shoulder:
</p>

<h3 id="id">Feature item 2</h3>

<p>
  Bacon ipsum dolor amet landjaeger capicola tail sausage shank swine biltong pork andouille t-bone
  alcatra chicken. Strip steak bacon tongue beef bresaola landjaeger. Shankle boudin pork belly
  jowl pig. Rump swine ham hock frankfurter pork shankle. Shank corned beef alcatra doner flank
  turducken. Tongue brisket ham shoulder:
</p>

<h2 id="id">Feature Group 2</h2>

<h3 id="id">Feature item 1</h3>

<p>
  Bacon ipsum dolor amet landjaeger capicola tail sausage shank swine biltong pork andouille t-bone
  alcatra chicken. Strip steak bacon tongue beef bresaola landjaeger. Shankle boudin pork belly
  jowl pig. Rump swine ham hock frankfurter pork shankle. Shank corned beef alcatra doner flank
  turducken. Tongue brisket ham shoulder:
</p>

<h3 id="id">Feature item 2</h3>

<p>
  Bacon ipsum dolor amet landjaeger capicola tail sausage shank swine biltong pork andouille t-bone
  alcatra chicken. Strip steak bacon tongue beef bresaola landjaeger. Shankle boudin pork belly
  jowl pig. Rump swine ham hock frankfurter pork shankle. Shank corned beef alcatra doner flank
  turducken. Tongue brisket ham shoulder:
</p>



<p class="note">
  For a detailed view of all API changes in the M Developer Preview, see the <a href=
  "{@docRoot}preview/reference.html">API Differences Report</a>.
</p>