too long time to obtain user location?

I'm beginner in android development . The problem is the code take several minutes to obtain user location so how i can fix this proble开发者_如何转开发m? please help me

LocationListener locationListener = new LocationListener() {
        public void onLocationChanged(Location location) {

        Toast.makeText(getBaseContext(), 
               "Location changed : Lat: " + location.getLatitude() + 
             " Lng: " + location .getLongitude(), 
               Toast.LENGTH_SHORT).show();
        }

        public void onStatusChanged(String provider, int status, Bundle extras) {}

        public void onProviderEnabled(String provider) {}

        public void onProviderDisabled(String provider) {}
      };


        lm.requestLocationUpdates(
            LocationManager.GPS_PROVIDER, 
            0, 
            0, 
            locationListener);

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GPS is always slow to start and doesn't work inside. You might want to read this:

I'm a big fan of location-based apps, but not their seemingly-inevitable startup latency.

Whether it's finding a place to eat or searching for the nearest Boris Bike, I find the delay while waiting for the GPS to get a fix, and then for the results list to populate, to be interminable. Once I’m in a venue and ready to get some tips, check-in, or review the food, I’m frequently thwarted by a lack of data connection.