// Register the listener with the Location Manager to receive location
// updates
boolean couldPollNetworkProvider = true;
boolean couldPollGPSProvider = true;
try {
	locationManager.requestLocationUpdates(
			LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);
} catch (Exception ex) {
	couldPollNetworkProvider = false;
}
try {
	locationManager.requestLocationUpdates(
			LocationManager.GPS_PROVIDER, 0, 0, locationListener);
} catch (Exception ex) {
	couldPollGPSProvider = false;
}
if (!couldPollGPSProvider && !couldPollNetworkProvider)
	Toast.makeText(this, "Couldn't get any location provider",Toast.LENGTH_LONG).show();
else if (!couldPollGPSProvider)
	Toast.makeText(this, "Couldn't get GPS provider",Toast.LENGTH_LONG).show();
else if (!couldPollNetworkProvider)
	Toast.makeText(this, "Couldn't get network provider",Toast.LENGTH_LONG).show();