在特定屏幕中禁用后退按钮（React Navigation Stack）

Question

您好！

我需要禁用导航栏上的后退按钮。请帮帮我。

路线

首页：我不想离开申请
成功：我不想返回结帐。

Example: click here

import React from 'react';
import { createStackNavigator } from '@react-navigation/stack';
import { OrderProvider } from '../contexts/order';

import Home from '../pages/Home';
import Checkout from '../pages/Checkout';
import Success from '../pages/Checkout/success';

const AppStack = createStackNavigator();

const AppRoutes = () => (
  <OrderProvider>
    <AppStack.Navigator screenOptions={{ headerShown: false }}> 
      <AppStack.Screen name="Home" component={Home} />  <-- here
      <AppStack.Screen name="Checkout" component={Checkout} />
      <AppStack.Screen name="Success" component={Success} /> <--- here
    </AppStack.Navigator>
  </OrderProvider>
);

export default AppRoutes;

import React from 'react';
import { View} from 'react-native';

const Success = () => {
  return (
    <View />
  );
};

export default Success;

Answer 1

您可以执行以下操作：

const Home = () => {
  useFocusEffect(
    React.useCallback(() => {
      const onBackPress = () => {
        return true;
      };

      BackHandler.addEventListener('hardwareBackPress', onBackPress);

      return () =>
        BackHandler.removeEventListener('hardwareBackPress', onBackPress);
    }, []),
  );
  // ...
};

const Success = ({navigation}) => {
  useFocusEffect(
    React.useCallback(() => {
      const onBackPress = () => {
        navigation.navigate('Home');
        return true;
      };

      BackHandler.addEventListener('hardwareBackPress', onBackPress);

      return () =>
        BackHandler.removeEventListener('hardwareBackPress', onBackPress);
    }, []),
  );
  // ...
};

我已将其设置为在调用 hardwareBackPress 事件时通过 returning true 单击 Home 屏幕不会执行任何操作。

对于 Success 屏幕，我导航回 Home。

我认为这就是您在阅读您的问题时所寻找的行为。

请务必不要忘记从 useFocusEffect 导入在你使用它的任何地方反应导航：

import { useFocusEffect } from '@react-navigation/native';

什么时候returntrue或false在hardwareBackPress事件处理函数中在react导航文档中解释：

Returning true from onBackPress denotes that we have handled the event, and react-navigation's listener will not get called, thus not popping the screen. Returning false will cause the event to bubble up and react-navigation's listener will pop the screen.

如果您想了解更多信息，请阅读此处的文档：https://reactnavigation.org/docs/custom-android-back-button-handling/。

在特定屏幕中禁用后退按钮（React Navigation Stack）

Disable back button in a specific Screen (React Navigation Stack)

react-native

react-navigation

react-navigation-v5

您好！