How to call a method in activity from a service

Question

There is a service that listens for some voice. If voice matches a string a certain method is invoked in the service object.

public class SpeechActivationSe         


        

Answer 1

After some research I found the following timings in my case for sending and receiving the broadcast. I have service in the same process.

sendBroadcast (Not recommended if both components are in same process) 34 sec

LocalBroadcastManager.getInstance(this).sendBroadcast(intent); close to 30 sec

Implementing using AIDL and RemoteCallbackList Will work for same process or different process

In your service

public final RemoteCallbackList mDMCallbacks = new RemoteCallbackList();

public void registerDMCallback(ICallBackAidl cb) {
    Logger.d(LOG_TAG, "registerDMCallback " + cb);
    if (cb != null)
        mDMCallbacks.register(cb);
}

When you need call methods in Application/Acitvity from service

public void callMehodsInApplication() {
    final int N = mDMCallbacks.beginBroadcast();
    for (int i = 0; i < N; i++) {
        try {
            mDMCallbacks.getBroadcastItem(i).method1();
        } catch (RemoteException e) {
            e.printStackTrace();
        }
    }
    mDMCallbacks.finishBroadcast();
}

In your class extending Application or Activity.

private ISyncmlServiceDMCallback mCallback = new ISyncmlServiceDMCallback.Stub() {
 // Implement callback methods here
  public void method1() {
       // Service can call this method
  }
}

 public void onServiceConnected(ComponentName name, IBinder service) {   
        svc.LocalBinder binder = (svc.LocalBinder) service;
        mSvc = binder.getService();
        mSvc.registerDMCallback(mCallback);
 }

Calling this way is almost instantaneous from broadcasting and receiving from the same process