Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Android Threads and Services Bound Services Using a Bound Service

Jason Anders
MOD
Jason Anders
Treehouse Moderator 145,860 Points
Posted by Jason Anders
Jason Anders
Treehouse Moderator 145,860 Points

I know it's something simple... but

Task 4 of 4 "Update MainActivity's 'latitude' and longitude' ... I'm pretty sure it needs to be in the "onClick" method, but for the life of me, I can't figure out how. (I blame being out in the sun all day) :)

GeolocationService.java 
public class GeolocationService extends Service {
  private IBinder binder = new LocalBinder();

  public class LocalBinder extends Binder {
    public GeolocationService getService() {
      return GeolocationService.this;
    }
  }

    @Override
    public IBinder onBind(Intent intent) {
      return binder;
    }

    //Client methods
    public int getLatitude() { return getLat(); }    
    public int getLongitude() { return getLng(); }
}
MainActivity.java 
public class MainActivity extends Activity {
  int latitude;
  int longitude;
  boolean isBound;
  Button updateLocationButton;
  private GeolocationService mGeolocationService;

  ServiceConnection serviceConnection = new ServiceConnection(){
    public void onServiceConnected(ComponentName name, IBinder binder){
      isBound = true;
      GeolocationService.LocalBinder localBinder = (GeolocationService.LocalBinder) binder;
      mGeolocationService = localBinder.getService();
    }
    public void onServiceDisconnected(ComponentName name){
      isBound = false;
    }  
  };  

  @Override
  public void onCreate(Bundle savedInstanceState) {
    setContentView(R.layout.activity_main);

    updateLocationButton = (Button) findViewById(R.id.update_button);
    updateLocationButton.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v){
      }
    });
  } 

  @Override
  public void onStart() {
    Intent i = new Intent(this, GeolocationService.class);
    bindService(i, serviceConnection, Context.BIND_AUTO_CREATE);
  }

  @Override
  public void onStop() {
    if (isBound) {
      unbindService(serviceConnection);  
      isBound = false;
    }
  }
}

1 Answer

Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

I did it! I feel a little like the kid in Willy Wonka who found the golden ticket :smiley: Here you go! :smiley:

  @Override
  public void onCreate(Bundle savedInstanceState) {
    setContentView(R.layout.activity_main);

    updateLocationButton = (Button) findViewById(R.id.update_button);
    updateLocationButton.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v){
        if (isBound) {
          latitude = mGeolocationService.getLatitude();
          longitude = mGeolocationService.getLongitude();
        }
      }
    });
  }

Hope this helps! :sparkles:

Jason Anders
Jason Anders
Treehouse Moderator 145,860 Points
Jason Anders
Jason Anders
Treehouse Moderator 145,860 Points

Thank you so much... I was missing the if (isbound)

I knew it was something small! You rock! :dizzy:

Patrick Munemo
Patrick Munemo
14,892 Points

Ooooh woow, Jennifer you rock. Thanks a million times