小编ttt*_*ttt的帖子

我想隐藏登录页面中的底部标签栏并将其显示到其他屏幕，我怎样才能实现这一点？现在登录屏幕上有底部标签栏，我想将其删除并在登录后显示它。如果有人知道如何操作，请提供帮助。我从这个答案中得到了一些想法React Native：如何在登录前隐藏底部栏并在用户登录后显示它？但我不知道如何检查用户是否登录！我如何将它从登录屏幕传递到 app.js？

这是我的 app.js

import { createStackNavigator } from "react-navigation-stack";
import { createAppContainer, createSwitchNavigator} from "react-navigation";
import LoginScreen from './src/screens/login';
import Orders from './src/screens/home';
import TransactionScreen from './src/screens/transactionScreen';
import Logout from './src/screens/footer';
import { Icon } from "react-native-elements";
import * as React from "react";
import { View, Image, Text, ActivityIndicator ,SafeAreaView,StatusBar,Alert} from "react-native";
import { createBottomTabNavigator } from 'react-navigation-tabs';
import AsyncStorage from "@react-native-community/async-storage";


// const Apps = createStackNavigator({
//   LoginScreen: { screen: LoginScreen },
//   Home :{ …