I have made a simple app which gets curren location (latitude and longitude). It is working perfectly. But now i want to take location updates. For this i implemented LocationListener interface .
I overridded the metod On location Change, but when i run the application, this method does not respond in any way. There is no error, no exception and no response I have attached my code. Please check it and guide me

        package com.example.hp430.gpslocaction;

  import android.Manifest;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.provider.Settings;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;

public class ThirdActivity extends AppCompatActivity {
LocationManager locationManager;
TextView textView;
String latitude, longitude;

@Override

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_third);
    textView = findViewById(R.id.txtLoc);
    ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1);
    locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

    if (!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
        final AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setMessage("Please turn on your GPS connection").setCancelable(false).setPositiveButton("Yes", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                startActivity(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS));

            }
        }).setNegativeButton("No", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.cancel();
            }
    });
        final AlertDialog alert = builder.create();
        alert.show();
    } else {
        Toast.makeText(this, "GPS is enabled", Toast.LENGTH_SHORT).show();
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1);

            return;
        }
        locationManager.requestLocationUpdates( LocationManager.GPS_PROVIDER,
                5000,
                0, locationListenerGPS);

        } else {
            Toast.makeText(this, "Unable to trace your location", Toast.LENGTH_SHORT).show();
        }*/

    }

}

LocationListener locationListenerGPS=new LocationListener() {
    @Override
    public void onLocationChanged(android.location.Location location) {

        double latitude=location.getLatitude();
        double longitude=location.getLongitude();
        String msg="New Latitude: "+latitude + "New Longitude: "+longitude;
        Toast.makeText(ThirdActivity.this,msg,Toast.LENGTH_LONG).show();
    }

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

    }

    @Override
    public void onProviderEnabled(String provider) {

    }

    @Override
    public void onProviderDisabled(String provider) {

    }
 };

   }