Question

I created this earlier on today, but it is not working. Location manager returns null, and I’ve even implemented the listener. Any ideas to the problems. thanks.

Edited:
I think this line is the problem

Location location = locationManager.getLastKnownLocation(provider); 

Basically, if location is null, it will go into the else part of the if statement below it. Every time I compile the code, it will go into the else statement meaning it location is not updating.

public class Activity1 extends Activity implements LocationListener {
/** Called when the activity is first created. */
JoshTwoActivity main;
Activity2 two;
boolean checkTick = false;
String locationplace = "";
private LocationManager locationManager;
private String provider;

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


               locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

    Criteria criteria = new Criteria();
    provider = locationManager.getBestProvider(criteria, false);
    System.out.println(provider);
    System.out.println(locationManager.getProviders(criteria, false));
    System.out.println(locationManager.getProvider("network"));
    System.out.println(locationManager.getAllProviders());

    Location location = locationManager.getLastKnownLocation(provider);
    System.out.println(locationManager.isProviderEnabled(provider));

    // Initialize the location fields
    if (location != null) {
        System.out.println("Provider " + provider + " has been selected.");
        int lat = (int) (location.getLatitude());
        int lng = (int) (location.getLongitude());
        System.out.println(String.valueOf(lat));
        System.out.println(String.valueOf(lng));

    } else {
        System.out.println("Provider not available");
        System.out.println("Provider not available");
    }

}


/* Request updates at startup */
@Override
protected void onResume() {
    super.onResume();
    locationManager.requestLocationUpdates(provider, 400, 1, this);
}

/* Remove the locationlistener updates when Activity is paused */
@Override
protected void onPause() {
    super.onPause();
    locationManager.removeUpdates(this);
}

@Override
public void onLocationChanged(Location location) {
    int lat = (int) (location.getLatitude());
    int lng = (int) (location.getLongitude());
    System.out.println(String.valueOf(lat));
    System.out.println(String.valueOf(lng));
}

@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
    // TODO Auto-generated method stub

}

@Override
public void onProviderEnabled(String provider) {
    Toast.makeText(this, "Enabled new provider " + provider,
            Toast.LENGTH_SHORT).show();

}

@Override
public void onProviderDisabled(String provider) {
    Toast.makeText(this, "Disenabled provider " + provider,
            Toast.LENGTH_SHORT).show();
}

}

Answer 1

Ok my first guess is that you are not giving location fix via command line or by using eclipse DDMS perpective. If this is problem go open DDMS perpecive and give latitude and longtiude you want and send it. So location will not be null from now on if this is the problem.