title: How can I enable webview background audio play in react native (ios)?
body: <p>My app plays my content(usually youtube.com video page) with react-native-webview. I want to make the content still played when my app is in background. Now the app just stop playing sound when it became background.</p>
  
  <p>I enabled capability : 
  <img src="https://user-images.githubusercontent.com/19284878/64590567-d15b4500-d3e2-11e9-8cb7-39fabfff50e1.png" alt="capability"></p>
  
  <p>This is my react-native-webview code.</p>
  
  <pre><code>&lt;WebView
    allowsFullscreenVideo
    source={{uri: this.state.url}}
    javaScriptEnabled={true}
    mixedContentMode={'always'}
    onShouldStartLoadWithRequest={this._deepLinkGuard}
  /&gt;
  </code></pre>