Question

我是本机反应的新手，但遇到以下无法自我发现的问题：

我正在尝试在底部选项卡组件下面更改一个组件。单击选项卡之一后，下面的组件应更改。但是，当我单击其中一个选项卡时，屏幕内容不会更改。我究竟做错了什么？此外，我已经在应用程序中有了第二个NavigationContainer。这就是为什么我将标志设置为独立于{true}的原因。

正如在受攻击的package.json文件中看到的那样，我将react-native与expo和react-navigation5一起使用。

visualisation of this problem

Wardrobe.js：

const App = () => {
  return (
      <ScrollView>
        <Text>Just for testing purpose 1</Text>
        <AvatarItemPickerMain/>
        <Text>Just for testing purpose 2</Text>
        <Text>Change this component when clicking on tab.</Text>
      </ScrollView>
  )};

export default App;

AvatarPickerMain.js：

const AvatarItemPickerMain = () => {
  return (
    <NavigationContainer independent={true}>
      <MainTabScreen ></MainTabScreen>
    </NavigationContainer>
  );
}

export default AvatarItemPickerMain;

MainTabScreen.js：

import React from 'react';
import { createMaterialBottomTabNavigator } from '@react-navigation/material-bottom-tabs';
import { createStackNavigator } from '@react-navigation/stack';
import Icon from 'react-native-vector-icons/Ionicons';

import HomeScreen from './HomeScreen';
import DetailsScreen from './DetailsScreen';
import ExploreScreen from './ExploreScreen';
import ProfileScreen from './ProfileScreen';

const HomeStack = createStackNavigator();
const DetailsStack = createStackNavigator();
const Tab = createMaterialBottomTabNavigator();

const MainTabScreen = () => (
    <Tab.Navigator
      initialRouteName="Home"
      activeColor="#fff"
    >
      <Tab.Screen
        name="Notifications"
        component={DetailsStackScreen}
        options={{
          tabBarLabel: '-->DetailsScreen<--',
          tabBarColor: '#1f65ff',
          tabBarIcon: ({ color }) => (
            <Icon name="ios-notifications" color={color} size={26} />
          ),
        }}
      />

      <Tab.Screen
        name="Profile"
        component={ProfileStackScreen}
        options={{
          tabBarLabel: '-->Profile<--',
          tabBarColor: '#1f65ff',
          tabBarIcon: ({ color }) => (
            <Icon name="ios-notifications" color={color} size={26} />
          ),
        }}
      />
     // some more screens are here
    </Tab.Navigator>
);

export default MainTabScreen;

const HomeStackScreen = ({navigation}) => (
<HomeStack.Navigator screenOptions={{
        headerStyle: {
        backgroundColor: '#009387',
        },
        headerTintColor: '#fff',
        headerTitleStyle: {
        fontWeight: 'bold'
        }
    }}>
        <HomeStack.Screen name="Home" component={HomeScreen} options={{
        title:'Overview'}} />
</HomeStack.Navigator>
);

const DetailsStackScreen = ({navigation}) => (
<DetailsStack.Navigator screenOptions={{
        headerStyle: {
        backgroundColor: '#1f65ff',
        },
        headerTintColor: '#fff',
        headerTitleStyle: {
        fontWeight: 'bold'
        }
    }}>
        <DetailsStack.Screen name="Details" component={DetailsScreen} options={{

        }} />
</DetailsStack.Navigator>
);

DetailsScreen.js

import React from 'react';
import { View, Text, Button, StyleSheet } from 'react-native';

const DetailsScreen = ({navigation}) => {
    return (
      <View style={styles.container}>
        <DisplaySomeComponent>  TODO  </DisplaySomeComponent>
        <Text>Details Screen</Text>

      </View>
    );
};

export default DetailsScreen;

const styles = StyleSheet.create({
  container: {
    flex: 1, 
    alignItems: 'center', 
    justifyContent: 'center'
  },
});

package.json：

{
  "dependencies": {
    "@react-native-community/masked-view": "0.1.5",
    "@react-navigation/drawer": "^5.4.0",
    "@react-navigation/native": "^5.1.1",
    "@react-navigation/stack": "^5.2.3",
    "@react-navigation/material-bottom-tabs": "^5.1.6",
    "react-native-paper": "^3.6.0",
    "expo": "~36.0.0",
    "react": "~16.9.0",
    "react-dom": "~16.9.0",
    "react-native": "https://github.com/expo/react-native/archive/sdk-36.0.0.tar.gz",
    "react-native-action-button": "^2.8.5",
    "react-native-gesture-handler": "^1.6.0",
    "react-native-material-ui": "^1.30.1",
    "react-native-reanimated": "^1.7.0",
    "react-native-safe-area-context": "^0.7.3",
    "react-native-screens": "^2.0.0-beta.8",
    "react-native-super-grid": "^3.1.2",
    "react-native-vector-icons": "^6.6.0",
    "react-native-web": "~0.11.7",
    "styled-components": "^5.0.1"
 },
  "devDependencies": {
    "babel-preset-expo": "~8.0.0",
    "@babel/core": "^7.0.0"
  },
  "private": true
}

反应导航底部选项卡不更新屏幕

0 个答案: