How do I find out if the GPS of an Android device is enabled

Question

On an Android Cupcake (1.5) enabled device, how do I check and activate the GPS?

Answer 1

This piece of code checks GPS status

final LocationManager manager = (LocationManager) getSystemService(Context.LOCATION_SERVICE );
if ( !manager.isProviderEnabled( LocationManager.GPS_PROVIDER ) ) {
    buildAlertMessageNoGps();
}

`