zh-tw/preview/api-overview.jd

page.title= Android N
meta.tags="preview", "androidn"
page.tags="preview", "developer preview"
page.image=images/cards/card-n-apis_2x.png
@jd:body


<div id="qv-wrapper">
<div id="qv">
  <h2></h2>
  <ol>
      <ul style="list-style-type:none;">
        <li><a href="#multi-window_support"></a></li>
        <li><a href="#notification_enhancements"></a></li>
        <li><a href="#jit_aot">JIT/AOT </a></li>
        <li><a href="#quick_path_to_app_install"></a></li>
        <li><a href="#doze_on_the_go"></a></li>
        <li><a href="#background_optimizations"></a></li>
        <li><a href="#data_saver">Data Saver</a></li>
        <li><a href="#tile_api"> API</a></li>
        <li><a href="#number-blocking"></a></li>
        <li><a href="#call_screening"></a></li>
        <li><a href="#multi-locale_languages"></a></li>
        <li><a href="#icu4">Android  ICU4J API</a></li>
        <li><a href="#gles_32">OpenGL ES 3.2 API</a></li>
        <li><a href="#android_tv_recording">Android TV </a></li>
        <li><a href="#android_for_work">Android for Work</a></li>
        <li><a href="#accessibility_enhancements"></a></li>
        <li><a href="#direct_boot"></a></li>
        <li><a href="#key_attestation"></a></li>
        <li><a href="#network_security_config"></a></li>
        <li><a href="#default_trusted_ca"> CA</a></li>
        <li><a href="apk_signature_v2">APK  2 </a></li>
        <li><a href="#scoped_directory_access"></a></li>
      </ol>
</div>
</div>


<p>Android N N Developer Preview

 </p>

<p>
  <a href="{@docRoot}preview/behavior-changes.html"></a> <a href="{@docRoot}preview/setup-sdk.html#docs-dl">API </a> API


</p>

<h2 id="multi-window_support"></h2>


<p> Android N  &mdash;
 </p>

  <p> </p>
  <ul>
  <li> Android N


 </li>

<li> Android TV <a href="{@docRoot}preview/features/picture-in-picture.html"></a>

 </li>
  </ul>

<div class="col-4of10">
<img src="{@docRoot}preview/images/mw-portrait.png" alt="" style="height:460px;padding-left:1em;" id="img-split-screen" />
<p class="img-caption">
  <strong> 1.</strong>
</p>
  </div>

<p> &mdash;


 </p>

<p>


</p>

<p>
  <a href="{@docRoot}preview/features/multi-window.html"></a>

</p>

<h2 id="notification_enhancements"></h2>

<p> Android N
</p>

<ul>
  <li>
    <strong></strong>


  </li>

  <li>
    <strong></strong> ()  Android Wear


  </li>

  <li>
    <strong></strong>Android


  </li>

  <li>
    <strong></strong> API


  </li>
</ul>

<div class="col-4of12">
  <img src="{@docRoot}preview/images/notifications-1.png" alt="" style="padding:.5em;max-width:226px">
</div>

<div class="col-4of12">
  <img src="{@docRoot}preview/images/notifications-3.png" alt="" style="padding:.5em;max-width:226px">
</div>

<div class="col-4of12">
  <img src="{@docRoot}preview/images/notifications-2.png" alt="" style="padding:.5em;max-width:226px">
</div>


<p class="img-caption">
  <strong> 2.</strong>
</p>

<p><a href="{@docRoot}preview/features/notification-updates.html"></a>

</p>


<h2 id="jit_aot"> JIT/AOT </h2>

<p> Android N  Just in Time (JIT)  ART Android JIT  ART  Ahead of Time (AOT)


</p>

<p> ART  AOT/JIT ART


</p>

<p> RAM

</p>

<p>ART

</p>

<h2 id="quick_path_to_app_install"></h2>

<p>ART JIT  Android 6.0


 </p>

<h2 id="doze_on_the_go">...</h2>

<p>Android 6.0  ()  CPU

 </p>

<p> Android N  CPU


</p>


<img src="/preview/images/doze-diagram-1.png" alt="" id="figure1" />
<p class="img-caption">
  <strong> 3.</strong>

</p>


<p>/


</p>

<p>
{@link
android.os.PowerManager.WakeLock}, {@link android.app.AlarmManager}  GPS/Wi-Fi  CPU
</p>

<p><a href="{@docRoot}training/monitoring-device-state/doze-standby.html#assessing_your_app"></a>


</p>

<h2 id="background_optimizations"> Svelte</h2>

<p> Svelte  Android  RAM Android N  Svelte

 </p>

<p> &mdash;  RAM ()


 </p>

<p> Android 5.0 {@link android.app.job.JobScheduler} JobScheduler


 </p>

<p>
   <a href="https://developers.google.com/android/reference/com/google/android/gms/gcm/GcmNetworkManager"><code>GCMNetworkManager</code></a> Google Play  Android


</p>

<p> <code>JobScheduler</code>  <code>GCMNetworkManager</code>  &mdash;  Android N  ()


</p>

<p> Android N  &mdash; {@link android.net.ConnectivityManager#CONNECTIVITY_ACTION}{@link
  android.hardware.Camera#ACTION_NEW_PICTURE}  {@link
  android.hardware.Camera#ACTION_NEW_VIDEO} &mdash; N Developer Preview <code>JobScheduler</code>  API


 </p>

<p>
  <a href="{@docRoot}preview/features/background-optimization.html"></a>

</p>


<h2 id="data_saver">Data Saver</h2>

<div class="col-5of12" style="margin-right:1.5em;">
<img src="{@docRoot}preview/images/datasaver.png" style="border:2px solid #ddd">

<p class="img-caption" style="padding-right:2em;">
  <strong> 4.</strong> []  Data Saver
</p>
  </div>

<p>

 </p>

<p>Android N  Data Saver Data Saver  Data Saver


 </p>

<p> []<strong></strong>  Data Saver  &mdash;  Data Saver


</p>

<p>Android N  {@link android.net.ConnectivityManager} <a href="{@docRoot}preview/features/data-saver.html#status"> Data Saver </a><a href="{@docRoot}preview/features/data-saver.html#monitor-changes"></a> Data Saver


</p>


<h2 id="tile_api"> API</h2>


<div style="float:right;max-width:320px">
<img src="{@docRoot}preview/images/quicksettings.png" style="padding-left:1.5em;">

<p class="img-caption" style="padding-left:2em;">
  <strong> 5.</strong>
</p>


  </div><p> Android N

 </p>

<p> &mdash;


 </p>

<p>Android N  API
</p>

<p>


</p>

<p>


</p>

<p>
   <a href="{@docRoot}preview/setup-sdk.html#docs-dl">API </a> <code>android.service.quicksettings.Tile</code>

</p>


<h2 id="number-blocking"></h2>

<p>Android N  API


</p>

<p>Android

</p>

<ul>
  <li>
  <li>

  <li>
</ul>

<p> Android  ( VOIP )


</p>

<p>
   <a href="{@docRoot}preview/setup-sdk.html#docs-dl">API </a> <code>android.provider.BlockedNumberContract</code>


</p>

<h2 id="call_screening"></h2>

<p>
  Android N <code>CallScreeningService</code> {@link android.telecom.Call.Details Call.Details}


</p>

<ul>
  <li>
  <li>
  <li>
</ul>

<p>
   <a href="{@docRoot}preview/setup-sdk.html#docs-dl">API </a> <code>android.telecom.CallScreeningService</code>


</p>


<h2 id="multi-locale_languages"></h2>


<p>Android N  [] <strong></strong> API  &mdash;


</p>

<p>Android N  ()  25  100


</p>

<p> <code>LocaleList.GetDefault()</code> Android N

</p>

<p><a href="{@docRoot}preview/features/multilingual-support.html"></a>
</p>

<h2 id="icu4">Android  ICU4J API</h2>

<p>
  Android N  <code>android.icu</code>  Android  <a href="http://site.icu-project.org/">ICU4J</a> API  <code>com.java.icu</code>  <code>android.icu</code>  ICU4J  Android  <code>android.icu</code> API APK


</p>

<p>
   Android ICU4J API <a href="{@docRoot}preview/features/icu4j-framework.html">ICU4J </a>
</p>


<h2 id="gles_32">OpenGL&trade; ES 3.2 API</h2>

<p>Android N  OpenGL ES 3.2 </p>

<ul>
  <li> <a class="external-link" href="https://www.khronos.org/registry/gles/extensions/ANDROID/ANDROID_extension_pack_es31a.txt">Android </a></a> (AEP)  <code>EXT_texture_sRGB_decode</code>
  <li> HDR
  <li> BaseVertex  ()
  <li>  ( WebGL )
</ul>

<p>Android N  OpenGL ES 3.2  API  <code>GLES32</code>  OpenGL ES 3.2  <code>&lt;uses-feature&gt;</code>  <code>android:glEsVersion</code>


 </p>

<p> OpenGL ES ( OpenGL ES )  <a href="{@docRoot}guide/topics/graphics/opengl.html">OpenGL ES API </a>
</p>


<h2 id="android_tv_recording">Android TV </h2>

<p>Android N  API Android TV  API TV


 </p>

<p> <a href="{@docRoot}preview/features/tv-recording-api.html">Android TV  API</a></p>


<h2 id="android_for_work">Android for Work</h2>

<p>Android for Work  Android N  API &mdash;  Android N  Android for Work Android for Work

</p>

<h3 id="work_profile_security_challenge"> </h3>

<p>
  <code>ACTION_SET_NEW_PASSWORD</code>  <code>ACTION_SET_NEW_PARENT_PROFILE_PASSWORD</code>


</p>

<p>
   <code>setPasswordQuality()</code><code>setPasswordMinimumLength()</code>  ( PIN ) <code>getParentProfileInstance()</code>  <code>DevicePolicyManager</code>  <code>setOrganizationColor()</code>  <code>setOrganizationName()</code>


</p>
<h3 id="turn_off_work"> </h3>

<p>


 </p>

<h3 id="always_on_vpn"> VPN </h3>

<p> VPN  VPN

</p>

<p>
   <code>DevicePolicyManager</code>  <code>setAlwaysOnVpnPackage()</code>  <code>getAlwaysOnVpnPackage()</code>


</p>

<p> VPN  VPN  VPN <code>android.net.VpnService</code>


 </p>

<p>
   [] &gt; [] &gt; [VPN]<strong></strong>  VPN <code>VPNService</code>


</p>

<h2 id="accessibility_enhancements"></h2>

<p>Android N  TalkBack


 </p>

<p> [] &gt; []


</p>

<p> Android N  API


</p>

<p> <a href="{@docRoot}preview/setup-sdk.html#docs-dl">API </a> <code>android.accessibilityservice.GestureDescription</code>
	</p>


<h2 id="direct_boot"></h2>

<p> ()


</p>

<p> Android N


 </p>

<p> <code>LOCKED_BOOT_COMPLETED</code>


 </p>

<a href="{@docRoot}preview/features/direct-boot.html"></a></p>
</p>


<h2 id="key_attestation"></h2>

<p> Android  Linux  Android


</p>

<p>Android N  RSA  EC


 </p>

<p> X.509  ()  ECDSA


</p>

<p> Android <a class="external-link" href="https://source.android.com/security/verifiedboot/verified-boot.html#bootloader_requirements"></a><a class="external-link" href="https://source.android.com/security/trusty/index.html"> (TEE)</a>


</p>

<ul>
<li></li>
<li><a href="https://source.android.com/security/verifiedboot/index.html" class="external-link">Verified Boot</a> </li>
  </ul>

<p><a href="https://source.android.com/security/keystore/" class="external-link"></a>
</p>

<p>Android N
</p>

<h2 id="network_security_config"></h2>

<p> Android N  (HTTPSTLS) <em></em> API ( X509TrustManager)


</p>

  <p></p>
<ul>
<li><b></b> (CA) CA


</li>
<li><b></b>


</li>
<li><b></b>
</li>
<li><b></b>
</li>
</ul>

<p><a href="{@docRoot}preview/features/security-config.html"></a>
</p>

<h2 id="default_trusted_ca"></h2>

<p> Android N  (CA) Android N  CA <a href="{@docRoot}preview/features/security-config.html"></a> CA


</p>

<h2 id="apk_signature_v2">APK  2 </h2>

<p>PackageManager  APK  2 APK  2  APK


</p>

<p>APK  1  (JAR )  2  2  2  APK


 </p>

<p>N Developer Preview APK  2
</p>

<h2 id="scoped_directory_access"></h2>

<p> Android N  API <a href="{@docRoot}guide/topics/data/data-storage.html#filesExternal"></a> ( SD )  API  ( <code>Pictures</code> )  API  <code>READ_EXTERNAL_STORAGE</code>


</p>

<p> API  API  UI


</p>

<p><a href="{@docRoot}preview/features/scoped-folder-access.html"></a>

</p>