ja/preview/behavior-changes.jd

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@jd:body


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

<h2></h2>

<ol>
  <li><a href="#perf"></a>
    <ol>
      <li><a href="#doze">Doze</a></li>
      <li><a href="#bg-opt"></a></li>
    </ol>
  </li>
  <li><a href="#perm"></a>
  </li>
  <li><a href="#sharing-files"></a></li>
  <li><a href="#accessibility"></a>
    <ol>
      <li><a href="#screen-zoom"></a></li>
      <li><a href="#vision-settings">  [Vision Settings]</a></li>
    </ol>
  </li>
  <li><a href="#ndk">  NDK </a></li>
  <li><a href="#afw">Android for Work</a></li>
  <li><a href="#annotations"></a></li>
  <li><a href="#other"></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">Doze</h3>

<p>
  Android 6.0API  23 Doze CPU

Android N Doze CPU


</p>


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

</p>

<p>
   Doze

 Doze  Doze  {@link android.os.PowerManager.WakeLock}{@link android.app.AlarmManager} GPSWi-Fi


 Doze  Doze


</p>


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

</p>

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


 Google Cloud MessagingGCM Doze


</p>


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

<p>
  Android N 3


</p>

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


</p>

<p>
   Android  {@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}
 {@link android.content.BroadcastReceiver}  {@code CONNECTIVITY_CHANGE}


  </li>

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

  </li>
</ul>

<p>Android N

  Android
{@link
  android.app.job.JobScheduler} API

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

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


</p>

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

<p>
  Android N
</p>

<h3 id="permfilesys"> </h3>

<p>
   Android N  <code>0700</code>


</p>

<ul>
  <li>
      {@link android.content.Context#MODE_WORLD_READABLE}  {@link android.content.Context#MODE_WORLD_WRITEABLE} {@link java.lang.SecurityException}


    <p class="note">
      <strong>:</strong>
       API  {@link java.io.File File} API


    </p>
  </li>
  <li>
      <code>file://</code> URI
<code>file://</code> URI <code>FileUriExposedException</code>

 {@link
    android.support.v4.content.FileProvider}

  </li>
  <li>
    {@link android.app.DownloadManager}
 {@link
    android.app.DownloadManager#COLUMN_LOCAL_FILENAME}
Android N {@link android.app.DownloadManager#COLUMN_LOCAL_FILENAME} {@link java.lang.SecurityException}


     {@link
    android.app.DownloadManager.Request#setDestinationInExternalFilesDir
    DownloadManager.Request.setDestinationInExternalFilesDir()}  {@link
    android.app.DownloadManager.Request#setDestinationInExternalPublicDir
    DownloadManager.Request.setDestinationInExternalPublicDir()} {@link android.app.DownloadManager#COLUMN_LOCAL_FILENAME}


{@link android.app.DownloadManager} {@link android.content.ContentResolver#openFileDescriptor
    ContentResolver.openFileDescriptor()}


  </li>
</ul>

<h2 id="sharing-files"></h2>

<p>
Android N Android  {@code file://} URI  {@link android.os.StrictMode} API

 URI {@code FileUriExposedException}

</p>

<p>
{@code content://} URI  URI
{@link android.support.v4.content.FileProvider}
<a href="{@docRoot}training/secure-file-sharing/index.html"></a>


</p>

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

<p>
  Android N


</p>


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

<p>
  Android N <strong> </strong>

 Nexus 4  <a href="http://developer.android.com/guide/topics/resources/providing-resources.html">sw320dp</a>


</p>

<div class="cols">

<div class="col-6">
  <img src="{@docRoot}preview/images/screen-zoom-1.png" alt="" height="XXX" id="figure1" />
</div>
<div class="col-6">
  <img src="{@docRoot}preview/images/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>Settings</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">  [Vision Settings]</h3>

<p>
  Android N  [Vision Settings]

  <strong></strong><strong></strong><strong> </strong><strong>TalkBack</strong>


<strong>[Settings] &gt; [Accessibility]</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>libandroid_runtime.so  getJavaVM  getJNIEnv  JNI

<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 libcutils.so}  {@code property_get} public {@code alternative __system_property_get}

    include  {@code __system_property_get}
<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()}

PIN

  </li>

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

  </li>

  <li>    <code>DISALLOW_ADD_USER</code>


<code>CreateUser()</code>  <code>createAndInitializeUser()</code>  <code>DevicePolicyManager.createAndManageUser()</code>


  </li>

  <li>   <code>DevicePolicyManagewr.getWifiMacAddress()</code>  Wi-Fi MAC

 Wi-Fi  {@code null}

  </li>

  <li>


</ul>

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

</p>

<h2 id="annotations"></h2>

<p>
Android N


</p>

<ul>
   <li>{@code VISIBILITY_BUILD}:</li>
   <li>{@code VISIBILITY_SYSTEM}:
</li>
</ul>

<p>

 {@code @Retention(RetentionPolicy.RUNTIME)}
</p>

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

<ul>
<li>Android N  API

 [Recents]


<p>
DDMS


</p>

<p>
N

</p>
</li>

<li>
Android N
[<strong>Setting</strong>] &gt; [<strong>Display</strong>] &gt; [<strong>Font size</strong>] [Recents]


</li>

<li>
 Android  TCP
Android N  {@code android.os.NetworkOnMainThreadException}  ANR


</li>

<li>
 {@code Debug.startMethodTracing()} SD  storing output


 API  {@code WRITE_EXTERNAL_STORAGE}
</li>

<li>
 API {@link android.os.Binder}  {@code TransactionTooLargeExceptions}  {@code RuntimeExceptions}


{@link android.app.Activity#onSaveInstanceState Activity.onSaveInstanceState()}  Android N {@code ActivityThread.StopInfo}  {@code RuntimeException}


</li>

<li>
 {@link java.lang.Runnable}  {@link android.view.View} {@link android.view.View} {@link java.lang.Runnable}  {@link android.view.View} {@link java.lang.Runnable}  {@link android.view.View}


<ul>
   <li> UI  {@link android.view.View}  {@link java.lang.Runnable}

   </li>
   <li>{@link java.lang.Runnable}   {@link java.lang.Runnable}
</li>
</ul>
</li>

<li>
{@link android.Manifest.permission#DELETE_PACKAGES DELETE_PACKAGES}  Android N


 {@link android.content.pm.PackageInstaller#uninstall PackageInstaller.uninstall()} {@link android.content.pm.PackageInstaller#STATUS_PENDING_USER_ACTION STATUS_PENDING_USER_ACTION}


</li>

</ul>