Question

My Gps settings are “off” in the beginning and I executed this code,and I can able to get CurrentLocation latitude and longitude.

But once I turned ON programatically,the settings are changed and everything is fine.

When I executed again,it is not giving me (provider,location references),I didnt understand why it is happening.

 public void getCurrentlocation()
{
    String providers = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
    Log.e("provider",providers);
    if(!providers.contains("gps")){
      final Intent poke = new Intent();
      poke.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");
      poke.addCategory(Intent.CATEGORY_ALTERNATIVE);
      poke.setData(Uri.parse("3")); 
      sendBroadcast(poke);
      Log.e("your gps is","enabled");
    }
    locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
       // Define the criteria how to select the locatioin provider -> use
       // default
       Criteria criteria = new Criteria();
       String provider = locationManager.getBestProvider(criteria,true);
       Location location = locationManager.getLastKnownLocation(provider);

       // Initialize the location fields
       if (location != null) 
       {
        System.out.println("Provider " + provider + " has been selected.");
              strLatitude=String.valueOf(location.getLatitude());
              strLongitude=String.valueOf(location.getLongitude());
              Log.e("lattitude",strLatitude);
              Log.e("logntitude",strLongitude);
       }
       else 
       {
              strLatitude=String.valueOf(0);
              strLongitude=String.valueOf(0);
              Log.e("lattitude",strLatitude);
              Log.e("logntitude",strLongitude);
       }

       Geocoder geocoder = new Geocoder(this, Locale.ENGLISH);

       try {
  List<Address> addresses = geocoder.getFromLocation(Double.parseDouble(strLatitude), Double.parseDouble(strLongitude), 5);
 getAddress(Double.parseDouble(strLatitude), Double.parseDouble(strLongitude));
  if(addresses != null) {
   Address returnedAddress = addresses.get(0);
   StringBuilder strReturnedAddress = new StringBuilder("Address:\n");
   for(int i=0; i<returnedAddress.getMaxAddressLineIndex(); i++) {
    strReturnedAddress.append(returnedAddress.getAddressLine(i)).append("\n");
   }
   Log.e("address",strReturnedAddress.toString());
  }
  else{
   Log.e("not found","No Address returned!");
  }
 } catch (IOException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
  Log.e("cannot get address","Canont get Address!");
 }
    }

Answer 1

Try this.

Location getGPSLocation(Context context) {
    try {
        LocationManager lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
        Criteria cr = new Criteria();
        cr.setCostAllowed(true);
        cr.setAccuracy(Criteria.NO_REQUIREMENT);
        cr.setPowerRequirement(Criteria.NO_REQUIREMENT);
        String provider = lm.getBestProvider(cr, true);
        if(provider == null)
            provider = lm.getBestProvider(cr, false);
        return lm.getLastKnownLocation(provider);
    }
    catch(Exception e) {
        Log.e("NeartoMe", "Exception while fetch GPS at: " + e.getMessage());
    }
    return null;
}

Called the above method like this. If here you are getting null means problem in fetching the gps then redirect to enable the “Use Wireless Network” in location & security settings. Then try again to fetch the GPS.

Location location = new Helper().getGPSLocation(context);
if(location != null) {
    latitude = (int) (location.getLatitude() * 1E6);
    longitude = (int) (location.getLongitude() * 1E6);
} else {
    Builder alert = new Builder(context);
    alert.setTitle(R.string.app_name);
    alert.setMessage(context.getString(R.string.enable_use_wireless_network));
    alert.setPositiveButton(R.string.button_ok, new DialogInterface.OnClickListener() 
    {
        @Override
        public void onClick(DialogInterface dialog, int which)
        {
            dialog.dismiss();
            context.startActivity(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS));
        }
    });
    alert.show();
}