使用react-navigation怎么动态修改title的内容
使用react-navigation怎么动态修改title的内容?很多新手对此不是很清楚,为了帮助大家解决这个难题,下面小编将为大家详细讲解,有这方面需求的人可以来学习下,希望你能有所收获。
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动态修改title内容:
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
/** * 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:
/** * 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 >Hello, Navigation !
ChatScreen.js:
/** * 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 >Chat with { params.user } < /Text> ); } } export default ChatScreen;
效果2:
/** * 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 = (
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