Google Maps in Android fragment sample

MapFragment.java

import android.Manifest;
import android.app.Fragment;
import android.content.pm.PackageManager;
import android.location.Location;
import android.os.Bundle;
import android.support.v4.content.ContextCompat;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapView;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;

/**
 * @author quydm
 */
public class MapFragment extends Fragment implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {

    private static final String TAG = MapFragment.class.getSimpleName();

    private GoogleApiClient mGoogleApiClient;
    private LocationRequest mLocationRequest;
    private GoogleMap mGoogleMap;
    private MapView mMapView;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

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

        mLocationRequest = LocationRequest.create()
                .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
                .setInterval(10 * 1000)
                .setFastestInterval(1 * 1000);

        Log.d(TAG, "onCreate");
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.map_fragment, container, false);

        mMapView = (MapView) rootView.findViewById(R.id.mapView);
        mMapView.onCreate(savedInstanceState);
        mMapView.onResume();

        Log.d(TAG, "onCreateView");
        return rootView;
    }

    @Override
    public void onResume() {
        super.onResume();
        mGoogleApiClient.connect();
        mMapView.onResume();
        setUpMap();

        Log.d(TAG, "onResume");
    }

    @Override
    public void onPause() {
        super.onPause();
        if (mGoogleApiClient.isConnected())
            mGoogleApiClient.disconnect();
        mMapView.onPause();

        Log.d(TAG, "onPause");
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        mMapView.onDestroy();

        Log.d(TAG, "onDestroy");
    }

    @Override
    public void onLowMemory() {
        super.onLowMemory();
        mMapView.onLowMemory();

        Log.d(TAG, "onLowMemory");
    }

    @Override
    public void onConnected(Bundle bundle) {
        if (!hasPermission(Manifest.permission.ACCESS_FINE_LOCATION))
            return;

        Location location = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
        if (location == null)
            LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
        else
            handleNewLocation(location);

        Log.d(TAG, "onConnected");
    }

    @Override
    public void onConnectionSuspended(int i) {
        Log.d(TAG, "onConnectionSuspended");
    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        Log.d(TAG, "onConnectionFailed");
    }

    @Override
    public void onLocationChanged(Location location) {
        handleNewLocation(location);

        Log.d(TAG, "onLocationChanged");
    }

    private void setUpMap() {
        if (mGoogleMap == null)
            mMapView.getMapAsync(new OnMapReadyCallback() {

                @Override
                public void onMapReady(GoogleMap googleMap) {
                    mGoogleMap = googleMap;
                }
            });
    }

    private void handleNewLocation(Location location) {
        LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());

        MarkerOptions options = new MarkerOptions()
                .position(latLng)
                .title("I am here!");
        mGoogleMap.addMarker(options);
        mGoogleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
    }

    private boolean hasPermission(String permission) {
        return ContextCompat.checkSelfPermission(getActivity(), permission) == PackageManager.PERMISSION_GRANTED;
    }

}

Thanks for the great code and logic. I implemented the same methodology. But, when I change to another fragment, and return to this fragment, onResume is called but onConnected isnt called. So, the marker disappear.