react-native-activity-android

Provides a method to move Android apps to the background (instead of exiting), and lifecycle hooks when the application is paused and resumed.

Useful if you want to capture listen for BackButton press and pause your application.

Installation

1. Install module

   npm install --save react-native-activity-android
   

2. In android/setting.gradle

   ...
   include ':ActivityAndroid', ':app'
   project(':ActivityAndroid').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-activity-android/android')
   

3. In android/app/build.gradle

   ...
   dependencies {
   ...
   compile project(':ActivityAndroid')
   }
   

4. Register module (in MainActivity.java)

   import ca.jaysoo.activityandroid.ActivityAndroidPackage; // <---- Import here
   public class MainActivity extends Activity implements DefaultHardwareBackBtnHandler {
   ......
   @Override
   protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   mReactRootView = new ReactRootView(this);
   mReactInstanceManager = ReactInstanceManager.builder()
   .setApplication(getApplication())
   .setBundleAssetName("index.android.bundle")
   .setJSMainModuleName("index.android")
   .addPackage(new MainReactPackage())
   .addPackage(new ActivityAndroidPackage(this)) // <---- Add here
   .setUseDeveloperSupport(BuildConfig.DEBUG)
   .setInitialLifecycleState(LifecycleState.RESUMED)
   .build();
   mReactRootView.startReactApplication(mReactInstanceManager, "ExampleRN", null);
   setContentView(mReactRootView);
   }
   ......
   }
   

Usage

Moving an application to the background.

import{BackAndroid}from'react-native';importActivityAndroid'react-native-activity-android';BackAndroid.addEventListener('hardwareBackPress',()=>{// Note: callbacks are optional.ActivityAndroid.moveTaskToBack(()=>console.log('worked'),()=>console.log('failed'));returnfalse;// Don't exit the app.});

Lifecycle hooks.

importActivityAndroid'react-native-activity-android';ActivityAndroid.addEventListener('activityPause',()=>{console.log('App is moved to the background');});ActivityAndroid.addEventListener('activityResume',()=>{console.log('App is moved to the foreground');});ActivityAndroid.removeEventListener('activityResume',callbackFn);ActivityAndroid.removeEventListener('activityPause',callbackFn));