react-navigation之动态修改title的内容
网络 2018-10-23 1570
本文介绍了react-navigation之动态修改title的内容，分享给大家，具体如下：
效果图：
动态修改title内容：
1 2 3 | 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‘
index.android.js
1 2 3 4 5 6 7 8 9 10 | /** * Sample React Native App * https://github.com/facebook/react-native * @flow */ import { AppRegistry, }from 'react-native'; import rootApp from './js/rootApp' AppRegistry.registerComponent('GankProject', () = >rootApp); |
rootApp.js:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | /** * 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:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | /** * 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：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | /** * 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; |
以上就是本文的全部内容，希望对大家的学习有所帮助
