README.md

#react-native-backPressed

使用 npm 源 npm install react-native-backPressed --save 或者 yarn react-native-backPressed

原生模块导入 Android Studio react-native link react-native-backPressed

使用方法 1、 MainActivity添加返回键监听

@Override public void onBackPressed() { super.onBackPressed(); RNBackPressedModule.uniqueInstance.sendEvent(); }

2、js 添加监听函数

import { NativeModules, NativeEventEmitter, BackHandler, ToastAndroid } from 'react-native';

const NativeModule = new NativeEventEmitter(NativeModules.SCODI_BACK_ANDROID);

componentWillMount() { this.naiveBackHandler = NativeModule.addListener('RNBackHandler', this.handleBackPress); }

componentWillUnmount() { this.naiveBackHandler.remove(); }

handleBackPress = () => { if (this.lastBackPressed && this.lastBackPressed + 2000 >= Date.now()) { BackHandler.exitApp(); return; }

this.lastBackPressed = Date.now(); ToastAndroid.show("再按一次退出应用", ToastAndroid.SHORT); }