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首先要確認(rèn)已經(jīng)配置好react-native的環(huán)境。
# 創(chuàng)建一個native應(yīng)用,SimpleApp,然后進(jìn)入項目目錄 react-native init SimpleApp cd SimpleApp # 通過npm安裝最新版本的react-navigation npm install --save react-navigation # 運行程序 react-native run-android
引入Stack Navigator
對于我們的應(yīng)用程序,我們想要使用堆棧式導(dǎo)航器,因為我們想要一個概念的“堆?!睂?dǎo)航,其中每個新屏幕都放在堆棧頂部,然后從堆棧頂部移除一個屏幕。
import React from 'react'; import { AppRegistry, Text, } from 'react-native'; import { StackNavigator } from 'react-navigation'; class HomeScreen extends React.Component { static navigationOptions = { title: 'Welcome world', }; render() { return <Text>Hello, Navigation!</Text>; } }
const SimpleApp = StackNavigator({ Home: { screen: HomeScreen }, }); AppRegistry.registerComponent('SimpleApp', () => SimpleApp);
屏幕的title在靜態(tài)導(dǎo)航選項中是可配置的,在這里可以設(shè)置許多選項來配置導(dǎo)航器中的屏幕顯示。
添加一個新的屏幕
class ChatScreen extends React.Component { static navigationOptions = { title: 'Chat with Lucy', }; render() { return ( <View> <Text>Chat with Lucy</Text> </View> ); } }
然后在HomeScreen添加一個按鈕,鏈接到ChatScreen
class HomeScreen extends React.Component { static navigationOptions = { title: 'Welcome', }; render() { const { navigate } = this.props.navigation; return ( <View> <Text>Hello, Chat App!</Text> <Button onPress={() => navigate('Chat')} title="Chat with Lucy" /> </View> ); }
最后將添加的兩個頁面添加到StackNavigator中
const SimpleApp = StackNavigator({ Home: { screen: HomeScreen }, Chat: { screen: ChatScreen }, });
在這里,可以傳遞參數(shù),從HomeScreen傳遞
class HomeScreen extends React.Component { static navigationOptions = { title: 'Welcome', }; render() { const { navigate } = this.props.navigation; return ( <View> <Text>Hello, Chat App!</Text> <Button onPress={() => navigate('Chat', { user: 'Lucy' })} title="Chat with Lucy" /> </View> ); } }
ChatScreen接收參數(shù)
class ChatScreen extends React.Component { // Nav options can be defined as a function of the screen's props: static navigationOptions = ({ navigation }) => ({ title: `Chat with ${navigation.state.params.user}`, }); render() { // The screen's current route is passed in to `props.navigation.state`: const { params } = this.props.navigation.state; return ( <View> <Text>Chat with {params.user}</Text> </View> ); } }
添加第三個頁面,Three.js, ChatScreen跳轉(zhuǎn)到Three
import React,{Component} from 'react'; import { AppRegistry, Text, View, Button, } from 'react-native'; class Three extends React.Component { static navigationOptions = { title: 'Three Sceen', }; render() { const { goBack } = this.props.navigation; return ( <Button title="Go back" onPress={() => goBack()} /> ); } } export default Three;
修改ChatScreen的配置
class ChatScreen extends React.Component { static navigationOptions = { title: 'Chat with Lucy', }; render() { const { navigate } = this.props.navigation; return ( <View> <Text>Chat with Lucy</Text> <Button onPress={() => navigate('Three')} title="to to ThreeScreen" /> </View> ); } }
最后的結(jié)果如下:
最后給出完整代碼
文件 index.android.js
import SimpleApp from './App';
文件App.js
import React from 'react'; import { AppRegistry, Text, View, Button, } from 'react-native'; import { StackNavigator } from 'react-navigation'; import ThreeScreen from './Three.js'; class HomeScreen extends React.Component { static navigationOptions = { title: 'Welcome', }; render() { const { navigate } = this.props.navigation; return ( <View> <Text>Hello, Chat App!</Text> <Button onPress={() => navigate('Chat')} title="Chat with Lucy" /> </View> ); } } class ChatScreen extends React.Component { static navigationOptions = { title: 'Chat with Lucy', }; render() { const { navigate } = this.props.navigation; return ( <View> <Text>Chat with Lucy</Text> <Button onPress={() => navigate('Three')} title="to to ThreeScreen" /> </View> ); } } const SimpleApp = StackNavigator({ Home: { screen: HomeScreen }, Chat: { screen: ChatScreen }, Three: { screen: ThreeScreen}, }); AppRegistry.registerComponent('SimpleApp', () => SimpleApp);
文件Three.js
import React,{Component} from 'react'; import { AppRegistry, Text, View, Button, } from 'react-native'; class Three extends React.Component { static navigationOptions = { title: 'Three Sceen', }; render() { const { goBack } = this.props.navigation; return ( <Button title="Go back" onPress={() => goBack()} /> ); } } export default Three;
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