Getting user's current location

Question

I am trying to get user's current location base on the accuracy and less battery consumption.

Please review my code to help determine if I am going in right direction.

Location location = null;
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setAltitudeRequired(false);
criteria.setBearingRequired(false);
criteria.setCostAllowed(true);
criteria.setPowerRequirement(Criteria.POWER_
try {
 String provider = locationManager.getBestProvider(criteria, false);
 locationManager.requestLocationUpdates(provider, 2000, 5,locationListener);
 location = locationManager.getLastKnownLocation(provider);
 lati = Double.toString(location.getLatitude());
 longi = Double.toString(location.getLongitude());
} catch (Exception ex) {
 ex.printStackTrace();
} 

Answer 1

The last know location could be null. So you need a further check for this, then ask for a quick update:

 if(location == null){
 String provider = locationManager.getBestProvider(criteria, true);
 if (provider != null){
 locationManager.requestLocationUpdates(provider, 0, 0, singeUpdateListener, context.getMainLooper()); 
 }else {
 Log.e("TAG", No location set"); 
 }
 }

class variable:

protected LocationListener singeUpdateListener = new LocationListener() {
 public void onLocationChanged(Location location) {
 String lati = Double.toString(location.getLatitude());
 String longi = Double.toString(location.getLongitude());
 locationManager.removeUpdates(singeUpdateListener);
 }
 public void onStatusChanged(String provider, int status, Bundle extras) {}
 public void onProviderEnabled(String provider) {}
 public void onProviderDisabled(String provider) {}
 };