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This time I will bring you a detailed explanation of the steps to use react-navigation. What are the precautions when using react-navigation? Here are practical cases, let’s take a look.
1. Main components
It is mainly divided into three parts according to the usage form:
StackNavigator: Similar to an ordinary Navigator, the navigation bar at the top of the screen
TabNavigator: is equivalent to the TabBarController in ios, and the tab bar at the bottom of the screen
DrawerNavigator: Drawer effect, slide out from the side
2. Use
1. Create a new project
react-native init ComponentDemo
2. Install this library in the application
npm install --save react-navigation
After installation, I found that it is a beta version (v1.0.0-beta.7), but there is a pitfall?! We will talk about this pitfall in detail in a moment~
3. Test TabNavigator, StackNavigator and DrawerNavigator
(1) Create a new HomePage.js
import React from 'react'; import { StyleSheet, View, Text, Button, Image } from 'react-native'; import { StackNavigator, TabNavigator } from 'react-navigation'; import ChatScreen from './ChatScreen'; import MinePage from './MinePage'; class HomePage extends React.Component{ static navigationOptions={ title: '首页',//设置标题内容 header:{ backTitle: ' ',//返回按钮标题内容(默认为上一级标题内容) } } constructor(props) { super(props); } render() { const {navigate} = this.props.navigation; return ( <View style={styles.container}> <Text style={{padding:10}}>Hello, Navigation!</Text> <Button onPress={() => navigate('Chat',{user:'Sybil'})} title="点击跳转"/> </View> ) } } const MainScreenNavigator = TabNavigator({ Home: { screen: HomePage, navigationOptions: { tabBar: { label: '首页', icon: ({tintColor}) => ( <Image source={require('./image/bar_home_nomarl@3x.png')} style={[{tintColor: tintColor},styles.icon]} /> ), }, } }, Certificate: { screen: MinePage, navigationOptions: { tabBar: { label: '我的', icon: ({tintColor}) => ( <Image source={require('./image/bar_center_normal@3x.png')} style={[{tintColor: tintColor},styles.icon]} /> ), }, } }, }, { animationEnabled: false, // 切换页面时不显示动画 tabBarPosition: 'bottom', // 显示在底端,android 默认是显示在页面顶端的 swipeEnabled: false, // 禁止左右滑动 backBehavior: 'none', // 按 back 键是否跳转到第一个 Tab, none 为不跳转 tabBarOptions: { activeTintColor: '#008AC9', // 文字和图片选中颜色 inactiveTintColor: '#999', // 文字和图片默认颜色 showIcon: true, // android 默认不显示 icon, 需要设置为 true 才会显示 indicatorStyle: {height: 0}, // android 中TabBar下面会显示一条线,高度设为 0 后就不显示线了 style: { backgroundColor: '#fff', // TabBar 背景色 }, labelStyle: { fontSize: 12, // 文字大小 }, }, }); const styles = StyleSheet.create({ container:{ flex: 1, backgroundColor:'#fff' }, icon: { height: 22, width: 22, resizeMode: 'contain' } }); const SimpleApp = StackNavigator({ Home: {screen: MainScreenNavigator}, Chat:{screen:ChatScreen}, }); export default SimpleApp;
(2) Create a new ChatScreen.js
import React from 'react'; import { Button, Image, View, Text } from 'react-native'; class ChatScreen extends React.Component { static navigationOptions = { title:'聊天', }; render() { const {params} = this.props.navigation.state; return ( <View style={{backgroundColor:'#fff',flex:1}}> <Text style={{padding:20}}>Chat with {params.user}</Text> </View> ); } } export default ChatScreen;
(3) Create a new MinePage.js
import React,{Component} from 'react'; import { Button, Image, View, Text, StyleSheet } from 'react-native'; import { DrawerNavigator } from 'react-navigation'; import MyNotificationsScreen from './MyNotificationsScreen'; class MinePage extends Component{ static navigationOptions = { title:'我的', drawerLabel: '我的', // Note: By default the icon is only shown on iOS. Search the showIcon option below. drawerIcon: ({ tintColor }) => ( <Image source={require('./image/chat@3x.png')} style={[styles.icon, {tintColor: tintColor}]} /> ), }; render(){; return( <View style={{backgroundColor:'#fff',flex:1}}> <Text style={{padding:20}}>Sybil</Text> <Button style={{padding:20}} onPress={() => this.props.navigation.navigate('DrawerOpen')} title="点击打开侧滑菜单" /> </View> ); } } const styles = StyleSheet.create({ icon: { width: 24, height: 24, }, }); const MyChatNavigator = DrawerNavigator({ MyChat: { screen: MinePage, }, Notifications: { screen: MyNotificationsScreen, }, },{ drawerWidth: 220, // 抽屉宽 drawerPosition: 'left', // 抽屉在左边还是右边 // contentComponent: CustomDrawerContentComponent, // 自定义抽屉组件 contentOptions: { initialRouteName: MinePage, // 默认页面组件 activeTintColor: '#008AC9', // 选中文字颜色 activeBackgroundColor: '#f5f5f5', // 选中背景颜色 inactiveTintColor: '#000', // 未选中文字颜色 inactiveBackgroundColor: '#fff', // 未选中背景颜色 style: { // 样式 } } }); export default MyChatNavigator;
(4) Write MyNotificationsScreen.js
import React from 'react'; import { StyleSheet, View, Text, Button, Image } from 'react-native'; class MyNotificationsScreen extends React.Component { static navigationOptions = { title:'通知', drawerLabel: '通知', drawerIcon: ({ tintColor }) => ( <Image source={require('./image/notif@3x.png')} style={[styles.tabIcon, {tintColor: tintColor}]} /> ), }; render() { return ( <View style={{backgroundColor:'#fff'}}> <Button style={{padding:20}} onPress={() => this.props.navigation.navigate('DrawerOpen')} title="点击打开侧滑菜单" /> <Button onPress={() => this.props.navigation.goBack()} title="返回我的界面" /> </View> ); } } const styles = StyleSheet.create({ tabIcon: { width: 24, height: 24, }, }); export default MyNotificationsScreen;
(5) Run
and report an error? This is the pit we mentioned above~
What is the reason? It turns out to be a bug in the beta version. Find line 12 of node_modules/react-navigation/src/views/Header.js in the directory. Delete it and it will be OK~
Ps: Unfortunately, I don’t have this error. Leave a picture~ When I am about to publish this article, the latest version has changed to (v1.0.0-beta.9), and the latest version has modified the above bug!
Okay, run it again~
Last dynamic rendering:
I believe you have mastered the method after reading the case in this article. For more exciting content, please pay attention to other related articles on the php Chinese website!
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