Lokasyon bulma sorunu

Internetten baktığım tutorial yardımıyla lokasyon bulmaya çalıştım ama sonuç hüsran oldu. Hazırda çalışan bir lokasyon bulma kodu olan yada bu kod üzerinde neyin yanlış olduğu konusunda yardımcı olabilecek varsa sevinirim. Şimdiden Teşekkürler.

package com.example.ua.lokasyon;

import android.Manifest;
import android.content.pm.PackageManager;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.app.Activity;
import android.location.Location;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.GoogleApiClient.ConnectionCallbacks;
import com.google.android.gms.common.api.GoogleApiClient.OnConnectionFailedListener;
import com.google.android.gms.location.FusedLocationProviderApi;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;

public class MainActivity extends AppCompatActivity implements ConnectionCallbacks, OnConnectionFailedListener, android.location.LocationListener {
    TextView latitudeText;
    TextView longitudeText;
    private FusedLocationProviderApi locationProvider = LocationServices.FusedLocationApi;
    private GoogleApiClient googleApiClient;
    private LocationRequest locationRequest;
    private Double myLatitude;
    private Double myLongitude;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        latitudeText = (TextView) findViewById(R.id.tvLatitude);
        longitudeText = (TextView) findViewById(R.id.tvLongitude);

        googleApiClient = new GoogleApiClient.Builder(this)
                .addApi(LocationServices.API)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .build();

        locationRequest = new LocationRequest();
        locationRequest.setFastestInterval(60 * 1000);
        locationRequest.setFastestInterval(15 * 1000);
        locationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
    }


    @Override
    public void onConnected(@Nullable Bundle bundle) {
        requestLocationUpdates();

    }

    private void requestLocationUpdates() {
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            return;
        }
        LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, (LocationListener) this);
    }

    @Override
    public void onConnectionSuspended(int i) {

    }

    @Override
    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {

    }

    @Override
    public void onLocationChanged(Location location) {
        myLatitude=location.getLatitude();
        myLongitude=location.getLongitude();
        latitudeText.setText("Latitude :"+ String.valueOf(myLatitude));
        longitudeText.setText("Longitude :"+ String.valueOf(myLongitude));


    }

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

    }

    @Override
    public void onProviderEnabled(String provider) {

    }

    @Override
    public void onProviderDisabled(String provider) {

    }

    @Override
    protected void onStart() {
        super.onStart();
        googleApiClient.connect();

    }

    @Override
    protected void onResume() {
        super.onResume();
        if(googleApiClient.isConnected()){
            requestLocationUpdates();
        }
    }

    @Override
    protected void onPause() {
        super.onPause();
        LocationServices.FusedLocationApi.removeLocationUpdates(googleApiClient, (LocationListener) this);
    }

    @Override
    protected void onStop() {
        super.onStop();
        googleApiClient.disconnect();
    }
}