I'm updating my code with permissions from the new Android API 23
. If I want to show user's location I just have to map.setMyLocationEnabled(true)
. If I have the permission I can see user's location, if I don't have permission I don't make this API call but after requesting the permissions and user accepts giving Location permissions I can't update the map with user's location. I've tried 2 approaches:
Approach 1 (rebuild map):
private void populateMap() {
mapFragment.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(GoogleMap map) {
...
if (PermissionsManager.getInstance().hasLocationPermissions(getActivity())) {
map.setMyLocationEnabled(true);
} else {
request permissions...
}
...
}
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
switch (requestCode) {
case PermissionsManager.LOCATION_PERMISSION_REQUEST: {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
populateMap();
}
return;
}
}
}
Approach 2 (use map instance and update it):
private void populateMap() {
mapFragment.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(GoogleMap map) {
mMap = map;
...
if (PermissionsManager.getInstance().hasLocationPermissions(getActivity())) {
map.setMyLocationEnabled(true);
} else {
request permissions...
}
...
}
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
switch (requestCode) {
case PermissionsManager.LOCATION_PERMISSION_REQUEST: {
if (mMap!= null && grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
mMap.setMyLocationEnabled(true);
}
return;
}
}
}
In both approaches the location button is shown, but the blue dot with user's location doesn't. What am I missing here? Thanks.
ps: Of course If I kill my Fragment and launch it again everything works fine, this issue happens when I have to prompt user for permissions and then update the map with my location after user's authorization.
So, I was testing with Genymotion
because I couldn't get my hands on a device with Android
6.0 but now, that I've borrowed one, I've tested this code in that physical device and I was happy to notice that it works.
Guess it's a Genymotion
problem. Oh well, code's working.
Thanks!
could you please use the following code and feed me back with result :-
import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Build;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
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;
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
private GoogleMap mMap;
/**
* Id to identity READ_CONTACTS permission request.
*/
private static final int REQUEST_ACCESS_FINE_LOCATION = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
/**
* Manipulates the map once available.
* This callback is triggered when the map is ready to be used.
* This is where we can add markers or lines, add listeners or move the camera. In this case,
* we just add a marker near Sydney, Australia.
* If Google Play services is not installed on the device, the user will be prompted to install
* it inside the SupportMapFragment. This method will only be triggered once the user has
* installed Google Play services and returned to the app.
*/
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
// Sets the map type to be "hybrid"
mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
// Add a marker in Sydney and move the camera
LatLng sydney = new LatLng(-34, 151);
mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
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.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
requestPermissions(new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_ACCESS_FINE_LOCATION);
}
return;
}
mMap.setMyLocationEnabled(true);
}
/**
* Callback received when a permissions request has been completed.
*/
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
@NonNull int[] grantResults) {
if (requestCode == REQUEST_ACCESS_FINE_LOCATION) {
if (grantResults.length == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
startActivity(getIntent());
finish();
}
}
}
}
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