React-Navigation web前端架构

时间 2019-11-29

标签 react navigation web 前端架构栏目 React 繁體版

原文原文链接

React-Navigation

前端架构

准备

/*安装组件*/
    npm install --save react-navigation
    
    npm install --save react-native-gesture-handler
    
    /*添加依赖*/
    react-native link react-native-gesture-handler

tips

若是是经过react-cli 脚手架打包的工程可能出现安装时缺乏依赖，个人根据官网上教程指导，就出现这个问题。
问题：
bogon:AwesomeProject fandong$ npm install -g react-navigation
npm WARN react-navigation@3.8.1 requires a peer of react@* but none is installed. You must install peer dependencies yourself.
npm WARN react-navigation@3.8.1 requires a peer of react-native@* but none is installed. You must install peer dependencies yourself.
npm WARN @react-navigation/native@3.4.1 requires a peer of react@* but none is installed. You must install peer dependencies yourself.
npm WARN @react-navigation/native@3.4.1 requires a peer of react-native@* but none is installed. You must install peer dependencies yourself.
npm WARN @react-navigation/native@3.4.1 requires a peer of react-native-gesture-handler@* but none is installed. You must install peer dependencies yourself.
npm WARN react-navigation-tabs@1.1.2 requires a peer of react@* but none is installed. You must install peer dependencies yourself.
npm WARN react-navigation-tabs@1.1.2 requires a peer of react-native@* but none is installed. You must install peer dependencies yourself.
npm WARN react-navigation-drawer@1.2.1 requires a peer of react@* but none is installed. You must install peer dependencies yourself.
npm WARN react-navigation-drawer@1.2.1 requires a peer of react-native@* but none is installed. You must install peer dependencies yourself.
npm WARN react-navigation-drawer@1.2.1 requires a peer of react-native-gesture-handler@^1.0.12 but none is installed. You must install peer dependencies yourself.
npm WARN @react-navigation/core@3.3.1 requires a peer of react@* but none is installed. You must install peer dependencies yourself.
npm WARN react-navigation-stack@1.3.0 requires a peer of react@* but none is installed. You must install peer dependencies yourself.
npm WARN react-navigation-stack@1.3.0 requires a peer of react-native@* but none is installed. You must install peer dependencies yourself.
npm WARN react-navigation-stack@1.3.0 requires a peer of react-native-gesture-handler@^1.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN react-native-screens@1.0.0-alpha.22 requires a peer of react@* but none is installed. You must install peer dependencies yourself.
npm WARN react-native-screens@1.0.0-alpha.22 requires a peer of react-native@* but none is installed. You must install peer dependencies yourself.
npm WARN react-native-safe-area-view@0.13.1 requires a peer of react@* but none is installed. You must install peer dependencies yourself.
npm WARN react-native-safe-area-view@0.13.1 requires a peer of react-native@* but none is installed. You must install peer dependencies yourself.
npm WARN react-native-tab-view@1.3.4 requires a peer of react@* but none is installed. You must install peer dependencies yourself.
npm WARN react-native-tab-view@1.3.4 requires a peer of react-native@* but none is installed. You must install peer dependencies yourself.
提示缺乏： react@*
react-native@*
react-native-gesture-handler@*
这多是因为版本3.X致使的，官网也有相应的提示。
如：Since react-navigation@3.x depends on the new React.createContext API, which is added in react@16.3.x, we will require react-native@^0.54.x. Also, react-navigation@3.x needs react-native-gesture-handler to work, you will need to make sure that the version of react-native-gesture-handler you are using matches your current react-native version.
根据提示 npm install --save react@* ,等等便可。

导航API

basic: 顶部导航条
    1> createStackNavigator
       uage:
             createStackNavigator({
                                          Home: {
                                            screen: HomeScreen
                                          }
                                         )
        参数： Home: 自定义对象，
              screen: 显示的对象，这里我定义了的一个HomeScreen

HomeScreen组件html

import React, { Component } from 'react';
import {View, Text,Button, Alert} from 'react-native';
import styles from '../basic/style';
class HomeScreen extends Component {
    static navigationOptions={
        headerTitle:<Text>'uuu'</Text>,
        headerRight:(
            <Button
                onPress={()=>Alert.alert("hehe")}
                title="Info"
                color="blue"
            />
        )
    };
    componentWillMount(){
        //Alert.alert("Will Mount... Home");
    }
    componentWillUnmount(){
        //Alert.alert("Unmount Home");
    }
    render() { 
        return (  
            <View style={styles.container}>
                <Text>Home Screen</Text>
                <Button
                    title="touch me"
                    onPress={()=>this.props.navigation.navigate('Details',{
                        id:'home1',
                        other:'done'
                    })}
                >
                </Button>
                <Button
                title="touch me"
                onPress={()=>this.props.navigation.navigate('ModalScreen',{
                    id:'home1',
                    other:'done'
                })}
            >
            </Button>
            </View>
        );
    }
}
export default HomeScreen;

导航函数

在React Native 开发中，每一个组件props 会引入navigation 这个组件对象，经常使用的函数有;
   
      navigate(<componentName>,{params/*option*/})
      push(<componentName>,{params/*option*/})
      
      区别： 这个函数使用都能经过this.props.navigation.navigate('Details') 到对应的界面。若是当前的界面就是Details 时，使用navigate 不在出现切换界面的效果，即不会导航。
           push不一样，push会把这个Details 继续入栈，想下web 中，访问的网页历史记录。

传参、添加参数、去参数

navigate(<componentName>,{params/*option*/})
    push(<componentName>,{params/*option*/})
    第二参数即。
    
    添加参数 setParam(key,value)
    去参数： getParam(key,defaultValue)
    第二个有个默认值须要注意下。

导航模式

默然是左右切换加载 ，第二种为 modal 即上下加载。
 const AppNavigator = createStackNavigator({
  Home:{
    screen: HomeScreen,
    navigationOptions: () => ({
      title: '首页'
    })
  },
  Details:{
    screen:DetailScreen,
    navigationOptions:({navigation})=>{
      return {title: navigation.getParam("id","no-id")};
    }
  },
  ModalScreen:{
      screen:ModalScreen,
      navigationOptions:()=>({
          title:'Modal'
      })
  }
},{
  initialRouteName:"Home",
  mode:'modal',
  //headerMode:'none'
});
const AppContainer=createAppContainer(AppNavigator);

导航的生命周期

组件跳转当前界面A，表示A 入栈，会触发 组件的生命周期即 componentWillMount 事件触发，若是从A 切换到B，不会触发A 的componentWillUnMount 事件，B的componentWillMount 触发，可是B 切换到A时，B会触发componentWillUnMount。应为A并无出栈。

导航的样式调整

/*自定义导航头*/
    static navigationOptions = {
    headerTitle: <LogoTitle />,
    headerRight: (
      <Button
        onPress={() => alert('This is a button!')}
        title="Info"
        color="#fff"
      />
    ),
  };

其余导航API

createBottomTabNavigator
    ：同第一个
    
    createDrawerNavigator
    usage：
            static navigationOptions = {
            drawerLabel: 'Home',
            drawerIcon: ({ tintColor }) => (
              <Image
                source={require('./chats-icon.png')}
                style={[styles.icon, {tintColor: tintColor}]}
              />
            ),
          };
    
    createSwitchNavigator
    usage:
            const AppStack = createStackNavigator({ Home: HomeScreen, Other: OtherScreen });
            const AuthStack = createStackNavigator({ SignIn: SignInScreen });
            
            export default createAppContainer(createSwitchNavigator(
              {
                AuthLoading: AuthLoadingScreen,
                App: AppStack,
                Auth: AuthStack,
              },
              {
                initialRouteName: 'AuthLoading',
              }
            ));
            
            --
            AuthLoadingScreen 中调用：this.props.navigation.navigate(userToken ? 'App' : 'Auth');

Navigation 官网API地址前端