AIDL Service

// Declare any non-default types here with import statements

    interface ICalculator {
        int add(int x,int y);
        int sub(int x,int y);
    }

public class AidlService extends Service {

    private static final String TAG = "AIDLServiceLogs";
    private static final String className = " AidlService";

    public AidlService() {
        Log.i(TAG, className+" Constructor");
    }

    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        Log.i(TAG, className+" onBind");
        return iCalculator.asBinder();
    }

    @Override
    public void onCreate() {
        super.onCreate();
        Log.i(TAG, className+" onCreate");
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.i(TAG, className+" onDestroy");
    }

    ICalculator.Stub iCalculator = new ICalculator.Stub() {
        @Override
        public int add(int x, int y) throws RemoteException {
            Log.i(TAG, className+" add Thread Name: "+Thread.currentThread().getName());
            int z = x+y;
            return z;
        }

        @Override
        public int sub(int x, int y) throws RemoteException {
            Log.i(TAG, className+" add Thread Name: "+Thread.currentThread().getName());
            int z = x-y;
            return z;
        }
    };

}

// Return the stub as interface
ServiceConnection serviceConnection = new ServiceConnection() {
       @Override
       public void onServiceConnected(ComponentName name, IBinder service) {
           Log.i(TAG, className + " onServiceConnected");
           iCalculator = ICalculator.Stub.asInterface(service);
       }

       @Override
       public void onServiceDisconnected(ComponentName name) {

           unbindService(serviceConnection);
       }
   };