Here is a full Activity class that places a Marker at the current location, and also moves the camera to the current position.
There are a few things going on in sequence here:

  • Check Location permission
  • Once Location permission is granted, call setMyLocationEnabled(), build the GoogleApiClient, and connect it
  • Once the GoogleApiClient is connected, request location updates

MapLocationActivity.java

public class MapLocationActivity extends AppCompatActivity implements OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener { GoogleMap mGoogleMap; SupportMapFragment mapFrag; LocationRequest mLocationRequest; GoogleApiClient mGoogleApiClient; Location mLastLocation; Marker mCurrLocationMarker; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); getSupportActionBar().setTitle("Map Location Activity"); mapFrag = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map); mapFrag.getMapAsync(this); } @Override public void onPause() { super.onPause(); //stop location updates when Activity is no longer active if (mGoogleApiClient != null) { LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this); } } @Override public void onMapReady(GoogleMap googleMap) { mGoogleMap=googleMap; mGoogleMap.setMapType(GoogleMap.MAP_TYPE_HYBRID); //Initialize Google Play Services if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) { //Location Permission already granted buildGoogleApiClient(); mGoogleMap.setMyLocationEnabled(true); } else { //Request Location Permission checkLocationPermission(); } } else { buildGoogleApiClient(); mGoogleMap.setMyLocationEnabled(true); } } protected synchronized void buildGoogleApiClient() { mGoogleApiClient = new GoogleApiClient.Builder(this).addConnectionCallbacks(this).addOnConnectionFailedListener(this).addApi(LocationServices.API).build(); mGoogleApiClient.connect(); } @Override public void onConnected(Bundle bundle) { mLocationRequest = new LocationRequest(); mLocationRequest.setInterval(1000); mLocationRequest.setFastestInterval(1000); mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY); if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) { LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this); } } @Override public void onConnectionSuspended(int i) {} @Override public void onConnectionFailed(ConnectionResult connectionResult) {} @Override public void onLocationChanged(Location location) { mLastLocation = location; if (mCurrLocationMarker != null) { mCurrLocationMarker.remove(); } //Place current location marker LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude()); MarkerOptions markerOptions = new MarkerOptions(); markerOptions.position(latLng); markerOptions.title("Current Position"); markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA)); mCurrLocationMarker = mGoogleMap.addMarker(markerOptions); //move map camera mGoogleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng)); mGoogleMap.animateCamera(CameraUpdateFactory.zoomTo(11)); //stop location updates if (mGoogleApiClient != null) { LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this); } } public static final int MY_PERMISSIONS_REQUEST_LOCATION = 99; private void checkLocationPermission() { if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) { // Should we show an explanation? if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.ACCESS_FINE_LOCATION)) { // Show an explanation to the user *asynchronously* -- don't block // this thread waiting for the user's response! After the user // sees the explanation, try again to request the permission. new AlertDialog.Builder(this).setTitle("Location Permission Needed").setMessage("This app needs the Location permission, please accept to use location functionality").setPositiveButton("OK", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { //Prompt the user once explanation has been shown ActivityCompat.requestPermissions(MapLocationActivity.this, new String[]{ Manifest.permission.ACCESS_FINE_LOCATION }, MY_PERMISSIONS_REQUEST_LOCATION ); } }).create().show(); } else { // No explanation needed, we can request the permission. ActivityCompat.requestPermissions(this, new String[]{ Manifest.permission.ACCESS_FINE_LOCATION }, MY_PERMISSIONS_REQUEST_LOCATION ); } } } @Override public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) { switch (requestCode) { case MY_PERMISSIONS_REQUEST_LOCATION: { // If request is cancelled, the result arrays are empty. if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) { // permission was granted, yay! Do the // location-related task you need to do. if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) { if (mGoogleApiClient == null) { buildGoogleApiClient(); } mGoogleMap.setMyLocationEnabled(true); } } else { // permission denied, boo! Disable the // functionality that depends on this permission. Toast.makeText(this, "permission denied", Toast.LENGTH_LONG).show(); } return; } // other 'case' lines to check for other // permissions this app might request } } }
Code language: JavaScript (javascript)

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <fragment xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" xmlns:map="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/map" tools:context="com.example.app.MapLocationActivity" android:name="com.google.android.gms.maps.SupportMapFragment"/> </LinearLayout>
Code language: HTML, XML (xml)

Result:

Show explanation if needed on Marshmallow and Nougat using an AlertDialog (this case happens when the user had previously denied a permission request, or had granted the permission and then later revoked it in the settings):

Prompt the user for Location permission on Marshmallow and Nougat by calling ActivityCompat.requestPermissions():

Move camera to current location and place Marker when the Location permission is granted:

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