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2,625 Pointsstock on 2/2 Messengers and Handlers:services
in the second task i need to "Now create a Messenger using this Handler and return it in onBind."
i try without succses.
my code:
public class GeolocationService extends Service {
int mLatitude;
int mLongitude;
//private GeolocationService mGeolocationService;
private Messenger mMessenger = new Messenger(new LocationHandler(GeolocationService.this));
// some methods omitted
@Override
public IBinder onBind(Intent intent) {
return mMessenger.getBinder();
}
public class LocationHandler extends Handler {
}
@Override
public void handleMessage(Message message){
mLatitude = getLatitude();
mLongitude = getLongitude();
}
}
}
and this what the compailer says:
./GeolocationService.java:28: error: class, interface, or enum expected } ^
./GeolocationService.java:5: error: constructor LocationHandler in class GeolocationService.LocationHandler cannot be applied to given types; private Messenger mMessenger = new Messenger(new LocationHandler(GeolocationService.this)); ^
required: no arguments found: GeolocationService reason: actual and formal argument lists differ in length ./GeolocationService.java:19: error: method does not override or implement a method from a supertype @Override ^
3 errors
1 Answer
Kourosh Raeen
23,733 PointsThe handleMessage() method should be inside the LocationHandler class. Also, don't pass anything to the LocationHandler() constructor:
public class GeolocationService extends Service {
int mLatitude;
int mLongitude;
private Messenger mMessenger = new Messenger(new LocationHandler());
// some methods omitted
@Override
public IBinder onBind(Intent intent) {
return mMessenger.getBinder();
}
public class LocationHandler extends Handler {
@Override
public void handleMessage(Message message){
mLatitude = getLatitude();
mLongitude = getLongitude();
}
}
}