google maps api location updates

Question

I'm using a map in my android app, but I want to use location updates and display it on a map, I'm following the documentation on google developers about location updates with LocationRequest() but cant figure how to use this into the map. here is my activity.java

import android.content.Context;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationManager;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.util.Log;

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.MapFragment;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
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;

public class MapaActivity extends FragmentActivity implements OnMapReadyCallback,ConnectionCallbacks,OnConnectionFailedListener, LocationListener {

    private GoogleMap mMap; // Might be null if Google Play services APK is not available.

    private GoogleApiClient mGoogleApiClient;
    // Request code to use when launching the resolution activity
    private static final int REQUEST_RESOLVE_ERROR = 1001;
    // Unique tag for the error dialog fragment
    private static final String DIALOG_ERROR = "dialog_error";
    // Bool to track whether the app is already resolving an error
    private boolean mResolvingError = false;
    // etiqueta para logs
    private final String TAG="Mapas";
    //coordenadas-------------------
    private String lat;
    private String lon;
    //variables para localizacion
    Location mLastLocation;
    Location mCurrentLocation;
    LocationRequest mLocationRequest;
    String mLastUpdateTime;
    //// posicion anterior///////////////
    LocationManager locationManager;



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_mapa);
        // Create a GoogleApiClient instance
        // Kick off the process of building a GoogleApiClient and requesting the LocationServices
        // API.
        buildGoogleApiClient();
//nuevo codigo
        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);


    }

    protected synchronized void buildGoogleApiClient() {
        Log.v(TAG, "Lanzando GoogleApiClient");
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
        createLocationRequest();
    }
    //location request
    // actualiza cada 40 segundos min 20 segundos
    protected void createLocationRequest() {
        mLocationRequest = new LocationRequest();
        mLocationRequest.setInterval(40000);
        mLocationRequest.setFastestInterval(20000);
        //prioridad alta precision
        mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        // Log.v(TAG,"se ingresa al locationRequest");
    }

    @Override
    protected void onResume() {
        super.onResume();
        //    setUpMapIfNeeded();
    }
    @Override
    protected void  onPause(){
        super.onPause();
        Log.v(TAG, "evento onPause");
    }

    @Override
    protected void onStop(){
        super.onStop();
        Log.v(TAG, "evento onStop");

    }
    @Override
    protected void onDestroy(){
        super.onDestroy();
        Log.v(TAG, "evento onDestroy");
    };
    @Override
    public void onMapReady(GoogleMap googleMap) {
        // Add a marker in Sydney, Australia, and move the camera.

        // habilitar controles de zoom
        googleMap.getUiSettings().setZoomControlsEnabled(true);
        googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
        //habilitar brujula
        googleMap.getUiSettings().setCompassEnabled(true);
        googleMap.setMyLocationEnabled(true);

        // para pasar a funcion
        locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
        // Create a criteria object needed to retrieve the provider
        Criteria criteria = new Criteria();
        // Get the name of the best available provider
        String provider = locationManager.getBestProvider(criteria, true);

        // We can use the provider immediately to get the last known location
        Location location = locationManager.getLastKnownLocation(provider);
        googleMap.clear();
        //  convert the location object to a LatLng object that can be used by the map API
        LatLng currentPosition = new LatLng(location.getLatitude(), location.getLongitude());
        Log.v(TAG, "Latitud :" + location.getLatitude());
        googleMap.addMarker(new MarkerOptions().position(currentPosition).title("Yo"));
        // zoom to the current location
        googleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(currentPosition, 13));
        googleMap.setMyLocationEnabled(true);
        Log.v(TAG, currentPosition.toString());
        //pasar la posicion para grabar en el servidor

    }

    @Override
    public void onConnected(Bundle bundle) {
    }
    @Override
    public void onConnectionSuspended(int i) {
    }
    @Override
    public void onLocationChanged(Location location) {
    }
    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {

    }
}

and here is my view

<fragment xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/map"
    tools:context=".MapaActivity"
    android:name="com.google.android.gms.maps.SupportMapFragment" />

Answer 1

It looks like you're mixing the FusedLocationProviderApi with the old open source Location API. If you're using the FusedLocationProviderApi, just stick with that.

You're missing two key pieces, the call to mGoogleApiClient.connect(), and the call to requestLocationUpdates().

Here's the general structure of what your code should look like:

public class MainActivity extends FragmentActivity
        implements OnMapReadyCallback,
        GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener,
        LocationListener {

    private GoogleMap map;
    private LocationRequest mLocationRequest;
    private GoogleApiClient mGoogleApiClient;
    private Location mLastLocation;
    private Marker marker;

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

    @Override
    protected void onResume() {
        super.onResume();

        buildGoogleApiClient();
        mGoogleApiClient.connect();

        if (map == null) {
            SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                    .findFragmentById(R.id.map);

            mapFragment.getMapAsync(this);
        }
    }

    @Override
    public void onMapReady(GoogleMap retMap) {

        map = retMap;

        setUpMap();

    }

    public void setUpMap(){

        map.setMapType(GoogleMap.MAP_TYPE_HYBRID);
        map.setMyLocationEnabled(true);
    }

    @Override
    protected void onPause(){
        super.onPause();
        if (mGoogleApiClient != null) {
            LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
        }
    }

    protected synchronized void buildGoogleApiClient() {
        Toast.makeText(this, "buildGoogleApiClient", Toast.LENGTH_SHORT).show();
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
    }

    @Override
    public void onConnected(Bundle bundle) {
        Toast.makeText(this,"onConnected",Toast.LENGTH_SHORT).show();

        mLocationRequest = new LocationRequest();
        mLocationRequest.setInterval(1000);
        mLocationRequest.setFastestInterval(1000);
        mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);

        //mLocationRequest.setSmallestDisplacement(0.1F);

        LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
    }

    @Override
    public void onConnectionSuspended(int i) {
        Toast.makeText(this,"onConnectionSuspended",Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        Toast.makeText(this,"onConnectionFailed",Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onLocationChanged(Location location) {
        mLastLocation = location;

        //remove previous current location Marker
        if (marker != null){
            marker.remove();
        }

        double dLatitude = mLastLocation.getLatitude();
        double dLongitude = mLastLocation.getLongitude();
        marker = map.addMarker(new MarkerOptions().position(new LatLng(dLatitude, dLongitude))
                .title("My Location").icon(BitmapDescriptorFactory
                        .defaultMarker(BitmapDescriptorFactory.HUE_RED)));
        map.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(dLatitude, dLongitude), 8));

    }

}