interface MyAidlService { 
  int add(int a, int b); 
}

public class MyService extends Service{ 
 
  MyAidlService.Stub mBinder = new MyAidlService.Stub() { 
    @Override 
    public int add(int a, int b) throws RemoteException { 
      return a + b; 
    } 
  }; 
 
  @Override 
  public IBinder onBind(Intent intent) { 
    return mBinder; 
  } 
 
  @Override 
  public void onCreate() { 
    super.onCreate(); 
  } 
 
  @Override 
  public void onDestroy() { 
    super.onDestroy(); 
  } 
 
  @Override 
  public int onStartCommand(Intent intent, int flags, int startId) { 
    return super.onStartCommand(intent, flags, startId); 
  } 
 
 
}

<service android:name=".MyService"> 
      <intent-filter> 
        <action android:name="com.xyb.servicetest.MyAidlService"/> 
      </intent-filter> 
    </service>

Intent intent = new Intent("com.xyb.servicetest.MyAidlService"); 
        bindService(intent, connection, BIND_AUTO_CREATE);

private MyAidlService aidlService;

private ServiceConnection connection = new ServiceConnection() { 
  @Override 
  public void onServiceConnected(ComponentName name, IBinder service) { 
    Log.d("onServiceConnected", "onServiceConnected"); 
    aidlService = (MyAidlService) MyAidlService.Stub.asInterface(service); 
    try { 
      int sum = aidlService.add(10, 50);//对10和50相加 
      Log.d("onServiceConnected", sum + ""); 
    } catch (RemoteException e) { 
      e.printStackTrace(); 
    } 
  } 
 
 
  @Override 
  public void onServiceDisconnected(ComponentName name) { 
 
 
  } 
};