在React Native上設置Android BroadcastReceiver

Question

我在React Native上構建應用程序，我想使用Android Service NotificationListenerService。爲了從服務中獲取數據，我需要一臺廣播接收器。我如何在React Native環境中設置BroadcastReceiver？

Answer 1

我所做的是使用getJSModule

MyListener.java

public class MyListener extends NotificationListenerService { 

    @Override 
    public void onNotificationPosted(StatusBarNotification sbn) { 

     if (sbn.getNotification().tickerText == null) { 
      return; 
     } 

     WritableNativeMap params = new WritableNativeMap(); 
     params.putString("tickerText", sbn.getNotification().tickerText.toString()); 
     params.putString("packageName", sbn.getPackageName()); 

     MyModule.sendEvent("notificationReceived", params); 
    } 

    @Override 
    public void onNotificationRemoved(StatusBarNotification sbn) {} 
} 

MyModule.java

public class MyModule extends ReactContextBaseJavaModule implements ActivityEventListener { 
    private static ReactApplicationContext reactContext; 

    public MyModule(ReactApplicationContext reactContext) { 
     super(reactContext); 
     this.reactContext = reactContext; 
     reactContext.addActivityEventListener(this); 
    } 

    public static void sendEvent(String event, WritableNativeMap params) { 
     reactContext 
      .getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class) 
      .emit(event, params); 
    } 
    ....... 
} 

檢查here有關發送事件的詳細信息emit事件的方式。