使用属性，定制组件

import React, { Component } from 'react';
import {
  AppRegistry,
  StyleSheet,
   Text,
   View,
   Image,
} from 'react-native';

 class CoustomGreeting extends Component{
   render(){
     return(
       {this.props.name} Demo!             
      )
  }
}
class hello extends Component {
  render() {
    let pic = {uri:'https://facebook.github.io/react/img/logo_og.png'};
    return (
      
        
        
        
       
    );
  }
}