versions/nougat/android-7.0-changes.jd

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@jd:body


<div id="tb-wrapper">
<div id="tb">

<h2></h2>

<ol>
  <li><a href="#perf"></a>
    <ol>
      <li><a href="#doze"></a></li>
      <li><a href="#bg-opt"></a></li>
    </ol>
  </li>
  <li><a href="#perm"></a></li>
  <li><a href="#accessibility"></a>
    <ol>
      <li><a href="#screen-zoom"></a></li>
      <li><a href="#vision-settings"></a></li>
    </ol>
  </li>
  <li><a href="#ndk">NDK </a></li>
  <li><a href="#afw">Android for Work</a></li>
</ol>

<h2></h2>
<ol>
  <li><a href="{@docRoot}preview/api-overview.html">Android N API </a>
</li>
</ol>

</div>
</div>


<p>
  Android N  API


</p>

<p>
   Android

</p>


<h2 id="perf"></h2>

<p>
  Android N  RAM


</p>

<h3 id="doze"></h3>

<p>
   Android 6.0 (API  23)  CPU Android N  () CPU


</p>


<img src="{@docRoot}images/android-7.0/doze-diagram-1.png" alt="" height="251px" id="figure1" />
<p class="img-caption">
  <strong> 1.</strong>

</p>

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


</p>


<img src="{@docRoot}images/android-7.0/doze-diagram-2.png" alt="" id="figure2" />
<p class="img-caption">
  <strong> 2.</strong>

</p>

<p>
   Android 6.0 (API  23) <a href="{@docRoot}training/monitoring-device-state/doze-standby.html"></a> Google  (GCM)


</p>


<h3 id="bg-opt"> Svelte</h3>

<p>
  Android N


</p>

<p>
   Wi-Fi  {@link
  android.net.ConnectivityManager#CONNECTIVITY_ACTION} broadcast in their


</p>

<p>
   ()  {@link
  android.hardware.Camera#ACTION_NEW_PICTURE}  {@link
  android.hardware.Camera#ACTION_NEW_VIDEO}


</p>

<p>
  Android N

</p>

<ul>
  <li> Android N  {@link
  android.net.ConnectivityManager#CONNECTIVITY_ACTION}  {@code CONNECTIVITY_CHANGE}  {@link
  android.content.BroadcastReceiver}


  </li>

  <li> {@link
  android.hardware.Camera#ACTION_NEW_PICTURE}  {@link
  android.hardware.Camera#ACTION_NEW_VIDEO}  Android N

  </li>
</ul>

<p>
   Android


</p>

<p>
  Android {@link
  android.app.job.JobScheduler} API  ()  {@link
  android.app.job.JobScheduler}


</p>

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


</p>


<h2 id="perm"></h2>

<p>
  Android N


</p>

<ul>
  <li>{@code GET_ACCOUNTS} ()
    <p>
      GET_ACCOUNTS  Android N

    </p>
  </li>

</ul>


<h2 id="accessibility"></h2>

<p>
  Android N


</p>


<h3 id="screen-zoom"></h3>

<p>
  Android N <strong></strong> <a href="http://developer.android.com/guide/topics/resources/providing-resources.html">sw320dp</a> (Nexus 4 )


</p>

<div class="cols">

<div class="col-6">
  <img src="{@docRoot}images/android-7.0/screen-zoom-1.png" alt="" height="XXX" id="figure1" />
</div>
<div class="col-6">
  <img src="{@docRoot}images/android-7.0/screen-zoom-2.png" alt="" height="XXX" id="figure1" />
</div>

</div> <!-- end cols -->
<p class="img-caption">
  <strong> 3.</strong>  Android N

</p>


<p>


</p>

<ul>
  <li> API  23  <em>[]</em>  <strong>[]</strong> <a href="{@docRoot}guide/topics/resources/runtime-changes.html"></a>


  </li>

  <li> Android N () <a href="{@docRoot}guide/topics/resources/runtime-changes.html"></a>


  </li>
</ul>

<p>
   Android

</p>

<ul>
  <li> <code><a href=
  "{@docRoot}guide/topics/resources/providing-resources.html">sw320dp</a></code>

  </li>

  <li>


    <p class="note">
      <strong></strong>


    </p>
  </li>

  <li><a href="{@docRoot}guide/practices/screens_support.html"></a> (<code>dp</code>)


  </li>
</ul>

<h3 id="vision-settings"></h3>

<p>
  Android N <strong></strong><strong></strong><strong></strong> <strong>TalkBack</strong> [] &gt; []<strong></strong>


</p>

<h2 id="ndk">NDK </h2>

<p>
  Android N  API NDK Android  API Android  API


</p>

<p>
   API  API  Android N  logcat  API


</p>

<p>
   NDK  API  API  ( <code>libpng</code>)  NDK  APK  .so


</p>

<p class="caution">
  <strong></strong> API Android


</p>

<p>
   NDK  Android  OpenSSL  BoringSSL  NDK  NDK  Android API


</p>

<p>
   Android N  Java  NDK

</p>

<p>Java </p>
<pre class="no-pretty-print">
java.lang.UnsatisfiedLinkError: dlopen failed: library "/system/lib/libcutils.so"
    is not accessible for the namespace "classloader-namespace"
</pre>

<p>NDK </p>
<pre class="no-pretty-print">
dlopen failed: cannot locate symbol "__system_property_get" referenced by ...
</pre>


<p>

</p>

<ul>
  <li> JNI  libandroid_runtime.so  getJavaVM  getJNIEnv

<pre class="no-pretty-print">
AndroidRuntime::getJavaVM -&gt; GetJavaVM from &lt;jni.h&gt;
AndroidRuntime::getJNIEnv -&gt; JavaVM::GetEnv or
JavaVM::AttachCurrentThread from &lt;jni.h&gt;.
</pre>
  </li>

  <li> {@code __system_property_get} {@code libcutils.so}  {@code property_get}  {@code __system_property_get}  include


<pre>
#include &lt;sys/system_properties.h&gt;
</pre>
  </li>

  <li> {@code libcrypto.so}  {@code SSL_ctrl}  {@code .so}  {@code libcyrpto.a} BoringSSL  OpenSSL  {@code libcrypto.so}


  </li>
</ul>

<h2 id="afw">Android for Work</h2>
<p>
  Android N  Android for Work  Android for Work


</p>

<ul>
  <li>DPC  N SDK  (DPC)  <code>DevicePolicyManager.setCertInstallerPackage()</code>  <code>IllegalArgumentException</code>


  </li>

  <li> <code>DevicePolicyManager.resetPassword()</code> PIN


  </li>

  <li> <code>DISALLOW_MODIFY_ACCOUNTS</code>  API


  </li>

  <li> <code>DISALLOW_ADD_USER</code> <code>CreateUser()</code>  <code>createAndInitial()</code>  <code>DevicePolicyManager.createAndManageUser()</code>


  </li>

  <li> <code>DevicePolicyManagewr.getWifiMacAddress()</code>  Wi-Fi MAC  Wi-Fi {@code null}


  </li>
</ul>

<p>
   Android N  Android for Work  <a href="{@docRoot}preview/features/afw.html">Android for Work </a>

</p>

<h2 id="other"></h2>

<ul>
<li> Android N  API


<p>
 DDMS


</p>

<p>
 N

</p>
</li>

<li>
Android N  ([]<strong></strong> &gt; []<strong></strong> &gt; []<strong></strong>)


</li>
</ul>