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+---
+title: MediaSession
+slug: Web/API/MediaSession
+tags:
+  - API
+  - Media Session API
+  - MediaSession
+  - 媒体
+  - 引用
+  - 接口
+  - 视频
+  - 音频
+translation_of: Web/API/MediaSession
+---
+<p>{{SeeCompatTable}}{{APIRef("Media Session API")}}</p>
+
+<p><a href="/en-US/docs/Web/API/Media_Session_API">Media Session API</a> 的 <strong><code>MediaSession</code></strong> 接口允许页面为标准媒体交互提供自定义行为.</p>
+
+<h2 id="属性">属性</h2>
+
+<dl>
+ <dt>{{domxref("MediaSession.metadata")}}</dt>
+ <dd>指向一个 {{domxref("MediaMetadata")}} 的实例,其包含富媒体的元数据. 该数据将用于平台显示.</dd>
+ <dt>{{domxref("MediaSession.playbackState")}}</dt>
+ <dd>展示当前mediasession是否处于播放状态. 有效值为<code>"none"</code>, <code>"paused"</code>,  <code>"playing"</code>.</dd>
+</dl>
+
+<h2 id="方法">方法</h2>
+
+<dl>
+ <dt>{{domxref("MediaSession.setActionHandler()")}}</dt>
+ <dd>设置一个监听mediasession动作(如 play 或者 pause)的事件句柄. 浏览方法页以获取所有动作的列表.</dd>
+</dl>
+
+<h2 id="例子">例子</h2>
+
+<p>下面的例子创建了一个新的media session,并且给其绑定了一些动作句柄:</p>
+
+<pre class="brush: js">if ('mediaSession' in navigator){
+  navigator.mediaSession.metadata = new MediaMetadata({
+    title: "Podcast Episode Title",
+    artist: "Podcast Host",
+    album: "Podcast Name",
+    artwork: [{src: "podcast.jpg"}]
+  });
+  navigator.mediaSession.setActionHandler('play', function() {});
+  navigator.mediaSession.setActionHandler('pause', function() {});
+  navigator.mediaSession.setActionHandler('seekbackward', function() {});
+  navigator.mediaSession.setActionHandler('seekforward', function() {});
+  navigator.mediaSession.setActionHandler('previoustrack', function() {});
+  navigator.mediaSession.setActionHandler('nexttrack', function() {});
+}</pre>
+
+<p>下面例子为暂停和播放设置了时间句柄:</p>
+
+<pre class="brush: js">var audio = document.querySelector("#player");
+audio.src = "song.mp3";
+
+navigator.mediaSession.setActionHandler('play', play);
+navigator.mediaSession.setActionHandler('pause', pause);
+
+function play() {
+   audio.play();
+   navigator.mediaSession.playbackState = "playing";
+}
+
+function pause() {
+   audio.pause();
+   navigator.mediaSession.playbackState = "Paused";
+}</pre>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('Media Session','#the-mediasession-interface','MediaSession')}}</td>
+   <td>{{Spec2('Media Session')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+<div>{{CompatibilityTable}}</div>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Chrome</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari (WebKit)</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatUnknown}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android Webview</th>
+   <th>Chrome for Android</th>
+   <th>Firefox Mobile (Gecko)</th>
+   <th>Firefox OS</th>
+   <th>IE Mobile</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatChrome(57)}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatUnknown}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>