React native Image component not working in android -

i'm new react native , i'm having problem working image.

to simplify question, i've created new react native project , added image component in index.android.js below:

/**  * sample react native app  * https://github.com/facebook/react-native  * @flow  */  import react, { component } 'react'; import {   appregistry,   stylesheet,   text,   view,   image, } 'react-native';  class testproject extends component {   render() {     return (       <view style={styles.container}>         <text style={styles.welcome}>           welcome react native!         </text>         <image source={{uri: 'http://facebook.github.io/react/img/logo_og.png'}}/>         <text style={styles.instructions}>           started, edit index.android.js         </text>         <text style={styles.instructions}>           shake or press menu button dev menu         </text>       </view>     );   } }  const styles = stylesheet.create({   container: {     flex: 1,     justifycontent: 'center',     alignitems: 'center',     backgroundcolor: '#f5fcff',   },   welcome: {     fontsize: 20,     textalign: 'center',     margin: 10,   },   instructions: {     textalign: 'center',     color: '#333333',     marginbottom: 5,   }, });  appregistry.registercomponent('testproject', () => testproject); 

the url inside image component copied react native image documentation. doing wrong? can please me out?

my react native 0.29.0 , , haven't tried in ios yet because right need create android app first.

give height , width of image.

<image source={{uri: 'http://facebook.github.io/react/img/logo_og.png'}} style={{ height: 50, width: 50 }}/>