Fail to get longitude and latitude by GPS but succuss by network provider in Android?

Question

I can get longitude and latitude and convert them into geopoint when the device get location by network provider, but it fails when I am using gps. What can I do to fix this problem?

public void onCreate(Bundle savedInstanceState) {
...

mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
mLocation = mLocationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (mLocation != null) {

            gp1 = getGeoByLocation(mLocation);
            gp2 = gp1;

            refreshMapView();

            if( !mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)){
                mLocationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 2000,
                        10, mLocationListener);
            }else{
                mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 2000,
                                10, mLocationListener);
            }

    private GeoPoint getGeoByLocation(Location location) {
        GeoPoint gp = null;
        try {
            if (location != null) {
                double geoLatitude = location.getLatitude() * 1E6;
                double geoLongitude = location.getLongitude() * 1E6;
                gp = new GeoPoint((int) geoLatitude, (int) geoLongitude);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return gp;
    }

Cannot display the string about longitude and latitude, also the image that point out my location when I am using gps;( — Hello Boy

Reno Reno · Accepted Answer · 2011-06-14T14:57:15

isProviderEnabled will false if it is disabled in the Settings menu. If GPS is enabled you should see an icon on the notification/status bar.

Fail to get longitude and latitude by GPS but succuss by network provider in Android?

2 Answers