react-navigation之动态修改title的内容
效果图：
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动态修改title内容：
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static navigationOptions = { title: ({ state }) => `Chat with ${state.params.user}` }; |
ps:`Chat with ${state.params.user}` 这里有个注意的地方，是这个符号·而不是单引号‘
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index.android.js
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/** * Sample React Native App * @flow */import { AppRegistry,}from 'react-native';import rootApp from './js/rootApp'AppRegistry.registerComponent('GankProject', () = >rootApp); |
rootApp.js:
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/** * Created by Administrator on 2017/3/31 0031. */'use strict'import React from 'react';import { AppRegistry, Text, View, Button,}from 'react-native';import { StackNavigator}from 'react-navigation';import ChatScreen from './ChatScreen';class HomeScreen extends React.Component { static navigationOptions = { title: 'Welcome', //设置标题内容 }; render() { const { navigate } = this.props.navigation; return ( < View > <Text > Hello, Navigation ! </Text> <Button onPress={() => navigate('Chat',{user:'Lucy'})} title="Chat with Lucy"/ > </View> ); }} const SimpleApp = StackNavigator({ Home: {screen: HomeScreen}, Chat:{screen:ChatScreen}, }); export default SimpleApp; |
ChatScreen.js:
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/** * Created by Administrator on 2017/3/31 0031. */'use strict'import React,{Component}from 'react';import {View,Text}from 'react-native';class ChatScreen extends Component { static navigationOptions = { title: ({state}) = >`Chat with $ {state.params.user}` }; render() { const {params} = this.props.navigation.state; return ( < View > <Text > Chat with { params.user } < /Text> </View > ); }}export default ChatScreen; |
效果2：
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/** * Created by Administrator on 2017/3/31 0031. */'use strict'import React, { Component}from 'react';import {View, Text, Button}from 'react-native';class ChatScreen extends Component { static navigationOptions = { title: ({ state }) => { if (state.params.mode === 'info') { return `${state.params.user}'s Contact Info`; } return `Chat with ${state.params.user}`; }, header: ({state, setParams}) => { // The navigation prop has functions like setParams, goBack, and navigate. let right = ( < Button title = { `${state.params.user}'s info` } onPress = { () => setParams({ mode: 'info' }) } /> ); if (state.params.mode === 'info') { right = ( <Button title="Done" onPress={() => setParams({ mode: 'none' })} / > ); } return {right}; },};render() { const { params } = this.props.navigation.state; return ( < View > < Text > Chat with {params.user} < /Text> </View > );}}export default ChatScreen; |
