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Android Threads and Services But Wait There's More! Messengers and Handlers: Activity

Threads and Services

Create an inner Handler class for MainActivity , and create a Messenger field using this class.

// some methods omitted
public class MainActivity extends Activity {
    Boolean isBound = false;
    Messenger mServiceMessenger;

    ServiceConnection mServiceConnection = new ServiceConnection() {
      public void onServiceConnected(ComponentName name, IBinder binder) {
        isBound = true;
        mServiceMessenger = new Messenger (binder);

      public void onServiceDisconnected(ComponentName name) {
        isBound = false;
// some methods omitted
public class GeolocationService extends Service {
    int mLatitude;
    int mLongitude;
    Messenger mMessenger = new Messenger(new LocationHandler());

    public IBinder onBind(Intent intent) {
      return mMessenger.getBinder();

   class LocationHandler extends Handler {
      public void handleMessage(Message msg) {
        mLatitude = getLatitude();
        mLongitude = getLongitude();
  public class Difficulty {
    public static Boolean HARDMODE = false;    

1 Answer

I got it..

Hi im stuck how did you get through