Cara menggunakan react untuk melaksanakan halaman but

/**
 * Created by ithinkeryz on 2017/5/15.
 */
 import React, { Component } from 'react';import {
    AppRegistry,
    StyleSheet,
    Text,
    View,
    AsyncStorage,
    Image} from 'react-native';import Main from './Main/Main'import {Navigator} from 'react-native-deprecated-custom-components'import Guide from './Guide/Guide'import Common from './Common/Common'class LaunchView extends Component {
    render(){
        return (
            <Image source={{uri:&#39;LaunchImage&#39;}} style={{width:Common.screenW,height:Common.screenH}}/>
        )
    }

    componentDidMount() {
        // 延迟点
        setTimeout(this.openApp.bind(this),2000);
        // this.openApp();
    }

    openApp(){
        AsyncStorage.getItem(&#39;isFirst&#39;,(error,result)=>{

            if (result == &#39;false&#39;) {
                console.log(&#39;不是第一次打开&#39;);

                this.props.navigator.replace({
                    component:Main                })

            } else  {

                console.log(&#39;第一次打开&#39;);

                // 存储
                AsyncStorage.setItem(&#39;isFirst&#39;,&#39;false&#39;,(error)=>{
                    if (error) {
                        alert(error);
                    }
                });

                this.props.navigator.replace({
                    component:Guide                })
            }
        });
    }}export default class App extends Component {

    // 渲染场景
    _renderScene(route, navigator){
        return (
            <route.component navigator={navigator} {...route} />
        )
    }



    render() {
        // 判断是不是第一次打开


        return (
            <Navigator  initialRoute={{
                component: LaunchView            }}
                        renderScene={this._renderScene.bind(this)}

                        style={{flex:1}}
            />
        );


    }
    }