小编Pri*_*oka的帖子

我在反应本机应用程序中使用反应导航。因此，我按照https://reactnavigation.org/docs/custom-android-back-button-handling/上的文档使用此代码片段实现自定义 Android 后退按钮行为。

屏幕一.js

import React, {useCallback} from 'react';
import {useFocusEffect} from '@react-navigation/native';
import {
 View,
 Text,
 BackHandler,
} from 'react-native';

export function ScreenOne({navigation}) {
 
 useFocusEffect(
   useCallback(() => {
     const onBackPress = () => {
       if (isSelectionModeEnabled()) {
         disableSelectionMode();
         return true;
       } else {
         return false;
       }
     };

     BackHandler.addEventListener('hardwareBackPress', onBackPress);

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

 return (
   <View>
     <Text>Demo</Text>
   </View>
 )
}

堆栈.js

import React from 'react';
import {createStackNavigator, HeaderBackButton} from '@react-navigation/stack';
import { …