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java.lang.NullPointerException: Attempt to invoke virtual method 'void com.google.android.gms.maps.GoogleMap.clear()' on a null object reference

When I try to open the Navigation Home the App crashes
Navigation Home image
I have tried initializing the mMap but the app still crashes. Please help me out
My error >
java.lang.NullPointerException: Attempt to invoke virtual method 'void com.google.android.gms.maps.GoogleMap.clear()' on a null object reference
at com.example.gpshelper.Activity.home$2.onLocationResult(home.java:138)
Here's my Code
public class home extends AppCompatActivity implements OnMapReadyCallback, NavigationView.OnNavigationItemSelectedListener {
DrawerLayout drawerLayout;
Toolbar toolbar;
NavigationView navigationView;
ActionBarDrawerToggle actionBarDrawerToggle;
GoogleMap mMap;
LocationRequest locationRequest;
FusedLocationProviderClient fusedLocationProviderClient;
LatLng latLng;
FirebaseUser firebaseUser;
FirebaseAuth firebaseAuth;
TextView header_name, header_email;
DatabaseReference databaseReference;
String current_uid;
AlertDialog.Builder builder;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
drawerLayout = findViewById(R.id.drawerlayout);
toolbar = findViewById(R.id.home_toolbar);
setSupportActionBar(toolbar);
navigationView = findViewById(R.id.nev_view);
//navigationView.setNavigationItemSelectedListener(this);
actionBarDrawerToggle = new ActionBarDrawerToggle(this,drawerLayout,toolbar,R.string.app_name,R.string.app_name);
drawerLayout.addDrawerListener(actionBarDrawerToggle);
actionBarDrawerToggle.syncState();
databaseReference = FirebaseDatabase.getInstance().getReference("users");
firebaseAuth = FirebaseAuth.getInstance();
firebaseUser = firebaseAuth.getCurrentUser();
current_uid = firebaseUser.getUid();
callpermissionlistener();
update_location();
dynamicheaderlistener();
}
private void dynamicheaderlistener() {
View header = navigationView.getHeaderView(0);
header_name = header.findViewById(R.id.header_name_text);
header_email = header.findViewById(R.id.header_email_text);
databaseReference.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
String current_name = dataSnapshot.child(current_uid).child("firstname").getValue(String.class);
String current_email = dataSnapshot.child(current_uid).child("email").getValue(String.class);
String s1 = "Hi "+current_name;
header_name.setText(s1);
header_email.setText(current_email);
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
}
});
}
private void update_location() {
if (ContextCompat.checkSelfPermission(this,Manifest.permission.ACCESS_FINE_LOCATION)== PermissionChecker.PERMISSION_GRANTED &&
ContextCompat.checkSelfPermission(this,Manifest.permission.ACCESS_COARSE_LOCATION)==PermissionChecker.PERMISSION_GRANTED)
{
fusedLocationProviderClient = new FusedLocationProviderClient(this);
locationRequest = new LocationRequest()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
.setInterval(3000) //update interval
.setFastestInterval(5000); //fastest interval
fusedLocationProviderClient.requestLocationUpdates(locationRequest, new LocationCallback(){
#Override
public void onLocationResult(LocationResult locationResult) {
if (locationResult != null)
{
mMap.clear();
final double lat = locationResult.getLastLocation().getLatitude();
final double log = locationResult.getLastLocation().getLongitude();
latLng = new LatLng(lat, log);
mMap.addMarker(new MarkerOptions().position(latLng).title("your current location"));
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, 15F));
//update latitude and longitude
Map <String, Object> update = new HashMap<>();
update.put("latitude", lat);
update.put("longitude", log);
databaseReference.child(current_uid).updateChildren(update).addOnCompleteListener(new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
//Toast.makeText(home.this, "updated", Toast.LENGTH_SHORT).show();
}
});
}else {
Toast.makeText(home.this,"location not found", Toast.LENGTH_SHORT).show();
}
}
},getMainLooper());
}
else
{
callpermissionlistener();
}
}
private void callpermissionlistener() {
String[] permissions = {Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION};
String rationale = "Please provide location permission so that you can ...";
Permissions.Options options = new Permissions.Options()
.setRationaleDialogTitle("location permission")
.setSettingsDialogTitle("warrning");
Permissions.check(this, permissions, rationale, options, new PermissionHandler() {
#Override
public void onGranted() {
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.fragment_container);
mapFragment.getMapAsync(home.this);
update_location();
}
#Override
public void onDenied(Context context, ArrayList<String> deniedPermissions) {
callpermissionlistener();
}
});
}
#Override
public void onBackPressed() {
if (drawerLayout.isDrawerOpen(GravityCompat.START)){
drawerLayout.closeDrawer(GravityCompat.START);
}
else {
backpressedwarrning();
}
//super.onBackPressed();
}
public void backpressedwarrning(){
builder = new AlertDialog.Builder(home.this);
builder.setMessage(R.string.dialog_message).setTitle(R.string.dialog_title);
builder.setMessage("Do you want to close this application ?")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
AlertDialog alert = builder.create();
alert.setTitle("Exit");
alert.show();
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
// LatLng sydney = new LatLng(-34, 151);
//mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
//.moveCamera(CameraUpdateFactory.newLatLng(sydney));
}
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem menuItem) {
switch (menuItem.getItemId()){
case R.id.nev_home:
startActivity(new Intent(home.this, home.class));
finish();
break;
case R.id.nev_profile:
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new profilefagment()).commit();
/*getSupportActionBar().setTitle("profile");
getSupportActionBar().setDisplayHomeAsUpEnabled(true);*/
break;
case R.id.nev_joiningc:
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new joincirclefragment()).commit();
break;
case R.id.nev_invite:
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new invitecodefragment()).commit();
break;
case R.id.nev_mycircle:
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new mycirclefragment()).commit();
break;
case R.id.nev_logout:
firebaseUser = firebaseAuth.getCurrentUser();
if (firebaseUser != null)
{
firebaseAuth.signOut();
finish();
startActivity(new Intent(home.this, login_screen.class));
}
break;
}
drawerLayout.closeDrawer(GravityCompat.START);
return true;
}
}

It's because somehow before initializing mMap from the onMapReady(), it called mMap.clear();
To prevent the crash, make sure to null-check the mMap first and then access it.
For e.g.
if (mMap != null) {
...
mMap.clear();
mMap.addMarker(...);
mMap. moveCamera(...);
...
}

Method call expected in fragment

I'm new in android so please help me. I want to open fragment with map inside another fragment so I made a transaction in the first fragment:
View rootView = inflater.inflate(R.layout.fragment_location, container, false);
btn = rootView.findViewById(R.id.btn);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
MapsFragment gMaps = new MapsFragment();
assert getFragmentManager() != null;
FragmentTransaction transaction = getFragmentManager().beginTransaction();
transaction.replace(R.id.mainlayout, gMaps()); //HERE IS A PROBLEM
transaction.commit();
}
});
return rootView;
When gMaps() is called it shows an error Method call expected
Screenshot
Here is MapsFragment.java code
public class MapsFragment extends FragmentActivity implements OnMapReadyCallback, APIService.fetchResults {
private GoogleMap mMap;
private APIService apiService;
private IntentFilter connectivityIntentFilter;
private BottomSheetDialog bottomSheetDialog;
private View dialogView;
private Boolean isOpenOnly;
private Integer maxPrice;
private Integer radius;
private Place previousPlace;
private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
if (!NetworkChecker.getInstance().isNetworkAvailable(context)) {
Snackbar.make(findViewById(R.id.main_map), getString(R.string.no_active_connection), Snackbar.LENGTH_SHORT).show();
}
}
};
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_maps);
apiService = new APIService(this);
connectivityIntentFilter = new IntentFilter(CONNECTIVITY_ACTION);
GooglePlayServiceChecker googlePlayServiceChecker = new GooglePlayServiceChecker();
if (!googlePlayServiceChecker.checkGooglePlayServices(this)) {
Snackbar.make(findViewById(R.id.main_map), getString(R.string.no_google_play_services), Snackbar.LENGTH_SHORT).show();
finish();
}
final SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
assert mapFragment != null;
mapFragment.getMapAsync(this);
PlaceAutocompleteFragment autocompleteFragment = (PlaceAutocompleteFragment) getFragmentManager().findFragmentById(R.id.place_autocomplete);
AutocompleteFilter typeFilter = new AutocompleteFilter.Builder()
.setTypeFilter(AutocompleteFilter.TYPE_FILTER_REGIONS)
.build();
autocompleteFragment.setFilter(typeFilter);
autocompleteFragment.setHint(getString(R.string.default_city));
autocompleteFragment.setOnPlaceSelectedListener(new PlaceSelectionListener() {
#Override
public void onPlaceSelected(Place place) {
String s = (String) place.getName();
//Update place data.
previousPlace = place;
apiService.getPlaceSearch(s, getString(R.string.place_type), radius, maxPrice, isOpenOnly);
}
#Override
public void onError(Status status) {
}
});
bottomSheetDialog = new BottomSheetDialog(MapsFragment.this);
dialogView = getLayoutInflater().inflate(R.layout.bottom_sheet, null);
bottomSheetDialog.setContentView(dialogView);
FloatingActionButton floatingActionButton = findViewById(R.id.fab_filter);
floatingActionButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
dialogView.setVisibility(View.VISIBLE);
bottomSheetDialog.show();
}
});
final Switch swOpenOnly = dialogView.findViewById(R.id.openCloseSwitch);
final SeekBar skRadius = dialogView.findViewById(R.id.seekbar_radius);
final SeekBar skPrice = dialogView.findViewById(R.id.seekbar_price);
dialogView.findViewById(R.id.bt_submit_filter).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
radius = skRadius.getProgress();
maxPrice = skPrice.getProgress();
isOpenOnly = swOpenOnly.isChecked();
bottomSheetDialog.dismiss();
//Get places using filter.
if (previousPlace == null) {
apiService.getPlaceSearch(getString(R.string.default_city), getString(R.string.place_type), radius, maxPrice, isOpenOnly);
} else {
apiService.getPlaceSearch(previousPlace.getName().toString(), getString(R.string.place_type), radius, maxPrice, isOpenOnly);
}
}
});
}
#Override
public void onPointerCaptureChanged(boolean hasCapture) {
}
#Override
public void parseResults(Result result) {
mMap.clear();
if (result != null && result.getStatus() != null && result.getStatus().equals("OK")) {
LatLngBounds.Builder builder = new LatLngBounds.Builder();
for (Restaurant restaurant : result.getRestaurants()) {
Location pastLocation = restaurant.getGeometry().getLocation();
LatLng latLng = new LatLng(pastLocation.getLatitude(), pastLocation.getLongitude());
MarkerOptions markerOptions = new MarkerOptions()
.position(latLng)
.title(restaurant.getName())
.snippet(restaurant.getFormattedAddress());
Marker m = mMap.addMarker(markerOptions);
m.setTag(restaurant.getResID());
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
builder.include(m.getPosition());
}
try {
LatLngBounds latLngBounds = builder.build();
int padding = 10;
CameraUpdate cu = CameraUpdateFactory.newLatLngBounds(latLngBounds, padding);
mMap.animateCamera(cu);
} catch (IllegalStateException | ParseException | NullPointerException e) {
//Don't move
}
} else {
Snackbar.make(findViewById(R.id.main_map), getString(R.string.error_message), Snackbar.LENGTH_SHORT).show();
}
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
if (!NetworkChecker.getInstance().isNetworkAvailable(this))
Snackbar.make(findViewById(R.id.main_map), getString(R.string.no_active_connection), Snackbar.LENGTH_SHORT).show();
else
apiService.getPlaceSearch(getString(R.string.default_city), getString(R.string.place_type), radius, maxPrice, isOpenOnly);
mMap.setOnInfoWindowClickListener(marker -> {
Intent i = new Intent(MapsFragment.this, DetailActivity.class);
i.putExtra(getString(R.string.intent_key_id_tag), marker.getTag().toString());
if (NetworkChecker.getInstance().isNetworkAvailable(MapsFragment.this))
startActivity(i);
});
}
#Override
protected void onResume() {
super.onResume();
registerReceiver(broadcastReceiver, connectivityIntentFilter);
}
#Override
protected void onPause() {
super.onPause();
unregisterReceiver(broadcastReceiver);
}
}
I don't know does it make sense but ok. How to solve this problem?
Screenshot 2

You might be using android.app.FragmentTransaction. Try using androidx.fragment.app.FragmentTransaction and getSupportFragmentManager().beginTransaction().
Like:
androidx.fragment.app.FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
MapsFragment gMaps = new MapsFragment();
assert getFragmentManager() != null;
transaction.replace(R.id.mainlayout, gMaps).commit();

How to pass Latitude and Longitude from database to Google Maps Activity

I've set up a database which through a textview displays the latitude and longitude of a specific building. There is a "go" button underneath which loads up my mapsActivity. However, I can't seem to get the lat and long to be placed on the map.
Maps Activity
public class MapsActivity extends AppCompatActivity implements OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {
GoogleMap mGoogleMap;
SupportMapFragment mapFrag;
LocationRequest mLocationRequest;
GoogleApiClient mGoogleApiClient;
Location mLastLocation;
Marker mCurrLocationMarker, map1, map2, map3, map4, map5, map6, map7;
ZoomControls zoom;
// public static String TAG1;
// public static String TAG2;
public static String TAG_LAT = "lat";
public static String TAG_LNG = "lng";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
ToggleButton b1 = (ToggleButton) findViewById(R.id.button3);
getSupportActionBar().setTitle("Queen's Building Search");
Intent intent = getIntent();
mapFrag = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapFrag.getMapAsync(this);
zoom = (ZoomControls) findViewById(R.id.zcZoom);
zoom.setOnZoomOutClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mGoogleMap.animateCamera(CameraUpdateFactory.zoomOut());
}
});
zoom.setOnZoomInClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mGoogleMap.animateCamera(CameraUpdateFactory.zoomIn());
}
});
Bundle extras = getIntent().getExtras();
if(extras != null){
double value = extras.getDouble("Latitude");
double value1 = extras.getDouble("Longitude");
// TAG_LAT = extras.getString("Latitude");
// TAG_LNG = extras.getString("Longitude");
goToLocation(value, value1);
}
Go to location Method being called
public void goToLocation(double lat, double lng) {
LatLng ll = new LatLng(lat, lng);
CameraUpdate update = CameraUpdateFactory.newLatLng(ll);
mGoogleMap.moveCamera(update);
// btnGo();
}
building activity
btnGoLocation.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Double lat = selectedBuilding.getLatitude();
Double lng = selectedBuilding.getLongitude();
Bundle bundle = new Bundle();
// Intent intent = new Intent(BuildingActivity.this, MapsActivity.class);
//Bundle extras = getIntent().getExtras();
Intent intent = new Intent(BuildingActivity.this, MapsActivity.class);
bundle.putDouble(MapsActivity.TAG_LNG,lat);
bundle.putDouble(MapsActivity.TAG_LNG, lng);
// Intent intent = new Intent(getApplicationContext(), MapsActivity.class);
// intent.putExtra("Latitude", +lat);
// intent.putExtra("Longitude", ""+lng);
// intent.putExtra("latitude", lat);
// intent.putExtra("longitude", lng);
intent.putExtras(bundle);
startActivity(intent);
// Double latt=extras.getDouble(lat);
//Double loNg=extras.getDouble(lng)
}
});
As you can see my code is pretty messy trying to get this to work. If anyone could teamview with me it'd be a lot easier to show what i'm trying to do. I feel like i'm close.

Did you try in your MapActivity:
intent.getDoubleExtra("Latitude", 0);
?
Edit: and by the way, it isn't a database... just intent between 2 activities. No persistence here.

Use this in BuildingActivity
Intent intent = new Intent(getApplicationContext(), MapsActivity.class);
intent.putExtra("Latitude", ""+lat);
intent.putExtra("Longitude", ""+lng);
In MapsActivity get this value in onCreate() callback using this way...
Intent intent = getIntent();
If your extra data is represented as strings, then you can use intent.getStringExtra(String name) method. In your case:
String lat = intent.getStringExtra("Latitude");
String lng = intent.getStringExtra("Longitude");
Now you have both lat and lng value in your MapsActivity.
Hope this will help you :)

Multiple startActivityForResult()

I need to call this function twice in my application pointing to two different activities. I have a unique request code for each call, however my app seems to crash everytime it launches the second activity.
Here is my code (only relevant parts):
MainActivity:
//Request Info vars
static final int GET_DETAILS = 1;
static final int EDIT_DETAILS = 2;
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
mMap.setOnMapClickListener(new GoogleMap.OnMapClickListener() {
public void onMapClick(LatLng latLng) {
lat = latLng.latitude;
lon = latLng.longitude;
startActivityForResult(new Intent(MapsActivity.this,NewMarkerActivity.class), GET_DETAILS);
}
});
mMap.setOnInfoWindowClickListener(new GoogleMap.OnInfoWindowClickListener() {
#Override
public void onInfoWindowClick(Marker marker) {
current_marker = marker;
startActivityForResult(new Intent(MapsActivity.this,EditMarkerActivity.class), EDIT_DETAILS);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode,
Intent data) {
if (requestCode == GET_DETAILS) {
if (resultCode == RESULT_OK) {
String marker_title=data.getStringExtra("title");
String marker_snippet = data.getStringExtra("snippet");
addMarker(lat, lon, marker_title, marker_snippet);
mMap.animateCamera(CameraUpdateFactory.newLatLng(new LatLng(lat, lon)));
}
} if (requestCode == EDIT_DETAILS) {
if (resultCode == RESULT_OK) {
String marker_title=data.getStringExtra("title");
String marker_snippet = data.getStringExtra("snippet");
current_marker.setTitle(marker_title);
current_marker.setSnippet(marker_snippet);
}
}
}
EditMarkerActivity:
public class EditMarkerActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.edit_marker_activity);
Button save_btn = (Button)findViewById(R.id.btn_save);
save_btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
EditText editName = (EditText)findViewById(R.id.editName);
String marker_title = editName.getText().toString();
EditText editSnippet = (EditText)findViewById(R.id.editSnippet);
String marker_snippet = editSnippet.getText().toString();
Intent _result = new Intent();
_result.putExtra("title", marker_title);
_result.putExtra("snippet", marker_snippet);
setResult(Activity.RESULT_OK, _result);
finish();
}
});
}
}
NewMarkerActivity:
public class NewMarkerActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.new_marker_activity);
Button save_btn = (Button)findViewById(R.id.btn_save);
save_btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
EditText editName = (EditText)findViewById(R.id.editName);
String marker_title = editName.getText().toString();
EditText editSnippet = (EditText)findViewById(R.id.editSnippet);
String marker_snippet = editSnippet.getText().toString();
Intent _result = new Intent();
_result.putExtra("title", marker_title);
_result.putExtra("snippet", marker_snippet);
setResult(Activity.RESULT_OK, _result);
finish();
}
});
}
}
Any obvious issues? Help or insight to this problem will be greatly appreciated :)
Here is my output from Logcat:
android.content.ActivityNotFoundException: Unable to find explicit activity class {com.geekybrackets.virtualtourguide/com.geekybrackets.virtualtourguide.EditMarkerActivity}; have you declared this activity in your AndroidManifest.xml?

Turns out the issue was that I hadn't defined the activity in the manifest file.
Dear old me, now i know to check my errors !
Thanks again guys, case closed.

Get longitude and latitude

Hey guys I'm building an app and I need to get my longitude and latitude for some features I manage to get it but I can't pass it's values to my OnViewCreated method in my fragment. You can see those 2 simple toast messages in OnviewCreated they return null each time
LocatorFragment
public class LocatorFragment extends Fragment implements OnMapReadyCallback , GoogleApiClient.ConnectionCallbacks {
private MapView mapView;
private GoogleMap map;
private GoogleApiClient mGoogleApiClient;
private Double Latitude;
private Double Longitude;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
Intent intent = new Intent(getContext(), GPSTrackerActivity.class);
startActivityForResult(intent,1);
View v = inflater.inflate(R.layout.locator_fragment, container, false);
// Gets the MapView from the XML layout and creates it
mapView = (MapView) v.findViewById(R.id.mapview);
mapView.onCreate(savedInstanceState);
// Gets to GoogleMap from the MapView and does initialization stuff
map = mapView.getMap();
Location mLastLocation;
map.setMapType(GoogleMap.MAP_TYPE_NORMAL);
map.getUiSettings().setMyLocationButtonEnabled(false);
if (ActivityCompat.checkSelfPermission(getContext(), M anifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getContext(), 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 v;
}
map.setMyLocationEnabled(true);
// Needs to call MapsInitializer before doing any CameraUpdateFactory calls
MapsInitializer.initialize(this.getActivity());
// Updates the location and zoom of the MapView
return v;
}
#Override
public void onResume() {
mapView.onResume();
super.onResume();
}
#Override
public void onPause() {
super.onPause();
mapView.onPause();
}
#Override
public void onDestroy() {
super.onDestroy();
mapView.onDestroy();
}
#Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
#Override
public void onMapReady(GoogleMap googleMap) {
}
#Override
public void onConnected(#Nullable Bundle bundle) {
}
#Override
public void onConnectionSuspended(int i) {
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
Double longitude;
Double latitude;
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == 1){
Bundle extras = data.getExtras();
longitude = extras.getDouble("Longitude");
latitude = extras.getDouble("Latitude");
Latitude=latitude;
Longitude=longitude;
}
}
#Override
public void onViewCreated(View view, Bundle savedInstanceState) {
Toast.makeText(getContext(),String.valueOf(Latitude),Toast.LENGTH_SHORT).show();
Toast.makeText(getContext(),String.valueOf(Longitude),Toast.LENGTH_SHORT).show();
};
This is my GPSTracker Activity
public class GPSTrackerActivity extends AppCompatActivity implements
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener {
private GoogleApiClient mGoogleApiClient;
Location mLastLocation;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (mGoogleApiClient == null) {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
}
protected void onStart() {
mGoogleApiClient.connect();
super.onStart();
}
protected void onStop() {
mGoogleApiClient.disconnect();
super.onStop();
}
#Override
public void onConnected(Bundle bundle) {
try {
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
mGoogleApiClient);
if (mLastLocation != null) {
Intent intent = new Intent();
intent.putExtra("Longitude", mLastLocation.getLongitude());
intent.putExtra("Latitude", mLastLocation.getLatitude());
setResult(1,intent);
finish();
}
} catch (SecurityException e) {
}
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
}

I manage to do it via following function
map = mapView.getMap();
map.setOnMyLocationChangeListener(new GoogleMap.OnMyLocationChangeListener() {
#Override
public void onMyLocationChange(Location location) {
Latitude= location.getLatitude();
Longitude= location.getLongitude();
Location locationzoom = map.getMyLocation();
LatLng mapCenter = new LatLng(location.getLatitude(), location.getLongitude());
CameraPosition cameraPosition = CameraPosition.builder()
.target(mapCenter)
.zoom(13)
.build();
map.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition),
2000, null);