Android location problems

Question

I read posts like this, android getlastknownlocation returns null , but I have a problem apart from the known location.

i know that if i don't have any provider, i can't have any known location, getLastKnowedLocation(). but, How i can get the location when the provider is detected?

i use this code:

 public void myPosition() {
    if (mapa.getMyLocation() != null)
        mapa.animateCamera(CameraUpdateFactory.newLatLngZoom(
                new LatLng( mapa.getMyLocation().getLatitude(), mapa.getMyLocation().getLongitude()), 13));
    else{
        loca = locaMan.getLastKnownLocation(bestProvi);

        if (loca != null)
        mapa.moveCamera(CameraUpdateFactory.newLatLngZoom(
                new LatLng( loca.getLatitude(), loca.getLongitude()), 15));

    }
}
public void onLocationChanged(Location location) {
    myPosition();
}

@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
    myPosition();
}

@Override
public void onProviderEnabled(String provider) {
    myPosition();
    Toast toast1 =Toast.makeText(getApplicationContext(),"Provider ON", Toast.LENGTH_SHORT);
    toast1.show();
}

@Override
public void onProviderDisabled(String provider) {
    Toast toast1 =Toast.makeText(getApplicationContext(),"Provider OFF", Toast.LENGTH_SHORT);
    toast1.show();
}

But when the provider is activated, it isn't execute the code of method onProviderEnabled(), only when i turn off and turn on GPS on my smartphone.

When i start the aplication, i see a map, and 5 seconds after i see a blue point over my position, but myPosition() method isn't executed.

How i can do this?

Thank you for all.

Answer 1

I was trying to search something about that and i found the metod requestLocationUpdates() in these links: 1 2 (Spanish), but it didn't work in my project.

So i had to search more but from other way, because my problem wasn't the location, but the camera movement to this location. i found the TimerTask library and i used it.

I add this code into the other code:

 public class TimerClass extends TimerTask{
        public void run () {
            runOnUiThread(new Runnable() {
                @Override
                public void run () {
                    if(!pass) {
                        myPosition();
                    }
                }
            });
        }
}

it is a class into the MainActivity class.

i don't know if it is correct, but it runs without any problem. If someone know other way for fix this problem, answer this comment please.