title: react-native ActivityIndicator in Android
body: <p>i'm trying to add an ActivityIndicator to my react-native app.<br>
  in IOS It works well, also in Android emulator.<br>
  but in real Android device its doesn't work.      </p>
  
  <p>my try:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>import React, { Component } from 'react';
  import { ActivityIndicator } from 'react-native';
  
  class Spinner extends Component {
    constructor(props) {
      super(props);
    }
  
    render() {
      return (
        &lt;View&gt;
          &lt;ActivityIndicator
            size="large"
            animating
          /&gt;
        &lt;/View&gt;
      );
    }
  }
  
  export default Spinner;</code></pre>
  </div>
  </div>
  </p>