React Native:如何更改onPress事件的视图

时间:2016-01-30 03:25:14

标签: android ios react-native

我的第一个渲染视图(默认视图)上有一个按钮,我想在用户按下该按钮时更改视图。

我知道如何使用onPress事件,但我不知道如何更改整个视图?即时创建另一个react.createClass,其中包含新的渲染和其他内容,但我不知道如何使用它来更改View

这是我的第一个View(主要的)(顺便说一下应用程序名称是sess):

var sess = React.createClass({
  render(){
    return(

      <View>
        <Button> change view </Button>  //onPress is gonna be here
      </View>
    );
  },
});

我希望将视图更改为:

var newView = React.createClass({
  render(){
    return(

      <View>
        <Text> the View is now changed </Text>
      </View>
    );
  },
});

2 个答案:

答案 0 :(得分:13)

你可以这样做:

var sess = React.createClass({

  getInitialState(){
    return {
      viewOne: true
    }
  },

  changeView(){
     this.setState({
       viewOne: !this.state.viewOne
     })
  },

  render(){
    if(!this.state.viewOne) return <newView changeView={ () => this.changeView() } />
    return(
      <View>
        <Button onPress={ () => this.changeView() }> change view </Button>
      </View>
    )
  }
})

var newView = React.createClass({
  render(){
    return(
      <View>
        <Text onPress={this.props.changeView}> the View is now changed </Text>
      </View>
    );
  },
});

答案 1 :(得分:5)

建议您查看包reactter-native-router-flux。

在github @ https://github.com/aksonov/react-native-router-flux

在项目中布置多个视图的强大方法。

例如,我的应用程序的渲染如下。它通过react-native-router-flux支持多个视图(描述为场景)。 component属性只是派生自React.Component的类。

import {Scene, Router, TabBar, Modal, Schema, Actions, Reducer} from 'react-native-router-flux'

  render() {
       return <Router createReducer={reducerCreate} sceneStyle={{backgroundColor:'#F7F7F7'}}>
           <Scene key="modal" component={Modal} >
               <Scene key="root" hideNavBar={true}>
                   {/*<Scene key="register" component={Register} title="Register"/>
                   <Scene key="register2" component={Register} title="Register2" duration={1}/>
                   <Scene key="home" component={Home} title="Replace" type="replace"/>*/}
                   <Scene key="launch" initial={true}>
                    <Scene key="launch1" component={Launch}  hideNavBar={true}  style={{flex:1, backgroundColor:'transparent'}}/>
                        <Scene key="privacy" type="push" component={DisplayTextFile} title="Privacy"
                          textFile={DisplayTextFile.PRIVACY} style={{flex:1, backgroundColor:'transparent'}}/>
                        <Scene key="terms" type="push" component={DisplayTextFile} title="Terms Of Service"
                            textFile={DisplayTextFile.TERMS} style={{flex:1, backgroundColor:'transparent'}}/>
                        <Scene key="login" type="push"  hideNavBar={true}  component={Login} style={{flex:1, backgroundColor:'transparent'}}/>
                        <Scene key="forgotPassword" type="push"  hideNavBar={true}  component={ForgotPassword} style={{flex:1, backgroundColor:'transparent'}}/>
                        <Scene key="pleaseWait" component={WaitWindow}/>
                    </Scene>
                   <Scene key="pleaseWait" component={WaitWindow} panHandlers={null} />
                   <Scene key="tabbar" tabs={true} default="feed"  panHandlers={null}  >
                       <Scene key="feed" component={FeedScreen} mainfeed={true} title="Feed" hideNavBar={true} icon={TabIcon}/>
                       <Scene key="discover" component={Discover} title="Discover" icon={TabIcon}/>
                       <Scene key="messages" component={Messages} title="Messages"  hideNavBar={true}  icon={TabIcon}/>
                       <Scene key="dashboard" component={Dashboard} title="Profile" hideNavBar={true} icon={TabIcon}/>
                       {/*<Scene key="tab4" component={TabView} title="Tab #4" hideNavBar={true} icon={TabIcon}/>
                       <Scene key="tab5" component={TabView} title="Tab #5" icon={TabIcon} />*/}
                   </Scene>
               </Scene>
               <Scene key="waitWindow" component={WaitWindow} panHandlers={null} />
           </Scene>
       </Router>;
   }