Android - Add a Marker to a Fragment Map from MapsActivity - java

I have the problem which I write in the title
Here are the 2 codes from MapsActivity and fragment
#Override
public void onMapReady(GoogleMap googleMap) {
map = googleMap;
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
map.setMyLocationEnabled(true);
LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
// redraw the marker when get location update.
LatLng latlng = new LatLng(location.getLatitude(), location.getLongitude());
map.addMarker(new MarkerOptions().position(latlng).title("Marker").snippet(Float.toString(location.getSpeed())));
map.moveCamera(CameraUpdateFactory.newLatLng(latlng));
}
};
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5000, 15, locationListener);
}
}
Fragment Map
public class Tab2Map extends Fragment implements OnMapReadyCallback {
GoogleMap map;
public Tab2Map() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v=inflater.inflate(R.layout.fragment_tab2, container, false);
return v;
}
#Override
public void onViewCreated(View view,#Nullable Bundle savedInstanceState){
super.onViewCreated(view,savedInstanceState);
SupportMapFragment mapFragment=(SupportMapFragment)getChildFragmentManager().findFragmentById(R.id.fragment);
mapFragment.getMapAsync(this);
}
#Override
public void onMapReady(GoogleMap googleMap) {
}
}
Ηow can I put the marker from MapsActivity into the fragment because it's the only way to print it in map.App has Action Bar Tabs and the map can be displayed only through fragment?

Call this method in onMapReady(GoogleMap googleMap)
private void updateMap(List<SubOrdinateLocation> locations) {
if (markers != null) {
markers.clear();
mGoogleMap.clear();
}
for (SubOrdinateLocation sol : locations) {
if (sol.latitude != 0.0 && sol.longitude != 0.0) {
LatLng sydney = new LatLng(sol.latitude, sol.longitude);
Marker marker = mGoogleMap.addMarker(new MarkerOptions().position(sydney).title(sol.subOrdinateId).snippet(sol.subOrdinateName));
markers.add(marker);
}
}
if (markers != null && markers.size() > 0) {
LatLngBounds.Builder builder = new LatLngBounds.Builder();
for (Marker marker : markers) {
builder.include(marker.getPosition());
}
LatLngBounds bounds = builder.build();
LatLng center = bounds.getCenter();
builder.include(new LatLng(center.latitude - 0.001f, center.longitude - 0.001f));
builder.include(new LatLng(center.latitude + 0.001f, center.longitude + 0.001f));
bounds = builder.build();
int padding = 0; // offset from edges of the map in pixels
CameraUpdate cu = CameraUpdateFactory.newLatLngBounds(bounds, padding);
mGoogleMap.animateCamera(cu);
}
}
Modify it as per your needs.

Related

Google marker doesn't display

in the following code does not display the marker.This code I have made with previews android studio editions and there was no problem with tracking but now there is.I want to make a google map with tracking tab and for this reason I think can't use activity but only fragment.Anyone knows how it can be done?
public class Tab2Map extends Fragment implements OnMapReadyCallback {
GoogleMap mGoogleMap;
MapView mMapView;
View mView;
public Tab2Map() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
mView = inflater.inflate(R.layout.fragment_tab2, container, false);
return mView;
}
#Override
public void onViewCreated(View view,Bundle savedInstanceState){
super.onViewCreated(view,savedInstanceState);
mMapView=(MapView) mView.findViewById(R.id.map);
if(mMapView != null){
mMapView.onCreate(null);
mMapView.onResume();
mMapView.getMapAsync(this);
}
}
#Override
public void onMapReady(GoogleMap googleMap) {
MapsInitializer.initialize(getContext());
mGoogleMap = googleMap;
if (ActivityCompat.checkSelfPermission(this.getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this.getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
mGoogleMap.setMyLocationEnabled(true);
LocationManager locationManager = (LocationManager)getActivity().getSystemService(Context.LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
LatLng latlng = new LatLng(location.getLatitude(), location.getLongitude());
mGoogleMap.addMarker(new MarkerOptions().position(latlng).title("Current Location").snippet(latlng.toString()));
CameraPosition position=CameraPosition.builder().target(latlng).zoom(16).bearing(0).build();
mGoogleMap.moveCamera(CameraUpdateFactory.newCameraPosition(position));
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onProviderDisabled(String provider) {
}
};
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5, 15, locationListener);
}
}
fragment_tab2.xml
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/frameLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Tab2Map">
<com.google.android.gms.maps.MapView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/map"/>
</android.support.constraint.ConstraintLayout>

how to determine current localization and add marker to GoogleMapsApi in android

I can't resolve this problem. I trying to create Fragment with a map and I have this done. When I add static Long, Lat value the map show this o a map, But when I trying to make it automatic with getting localization in runnable the application just open the map and don't show specific LongLand values.
How to do this?
For getting long and late I'm using LocalizationManager, of course, I add permissions in manifest and also check runtime
public class LocalizationFragment extends Fragment implements OnMapReadyCallback {
private GoogleMap map;
MapView mapView;
View mview;
private double latitude, longtitude;
private Handler handler;
private Runnable runnable;
public LocalizationFragment() {
// Required empty public constructor
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
mview = inflater.inflate(R.layout.fragment_localization, container, false);
handler = new Handler();
getLocation();
if (ContextCompat.checkSelfPermission(getContext(), android.Manifest.permission.CAMERA)
!= PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(getActivity(), new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, 13);
}
if (ContextCompat.checkSelfPermission(getContext(), android.Manifest.permission.CAMERA)
!= PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(getActivity(), new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 11);
}
return mview;
}
#OnClick(R.id.button)
public void buttonStart() {
getLocation();
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mapView = (MapView) mview.findViewById(R.id.mapView);
if (mapView != null) {
mapView.onCreate(null);
mapView.onResume();
mapView.getMapAsync(this);
}
}
private void getLocation() {
LocationManager locationManager = (LocationManager) getContext().getSystemService(Context.LOCATION_SERVICE);
LocationListener locationListener = new LocationListener() {
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
#Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
#Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
#Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
latitude = location.getLatitude();
longtitude = location.getLongitude();
}
};
if (ActivityCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission
(getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
}
#Override
public void onMapReady(final GoogleMap googleMap) {
MapsInitializer.initialize(getContext());
map = googleMap;
googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
runnable = new Runnable() {
#Override
public void run() {
getLocation();
googleMap.addMarker(new MarkerOptions().position(new LatLng(latitude, longtitude)).title("Statue").snippet("Something"));
CameraPosition liberty = CameraPosition.builder().target(new LatLng(latitude, longtitude)).zoom(15).bearing(0).tilt(45).build();
googleMap.moveCamera(CameraUpdateFactory.newCameraPosition(liberty));
handler.postDelayed(this, 5000);
}
};
}
}
You need to add markers form the main thread.add this to your runnable.
runOnUiThread(new Runnable() {
#Override
public void run() {
googleMap.addMarker(new MarkerOptions().position(new LatLng(latitude, longtitude)).title("Statue").snippet("Something"));
}
});
I think this problem come from synchronize data. If you got location after add marker, it is meaningless, you get no location, and you have no marker on map, try to move action add marker into onLocationChanged

Android maps v2 - Map view pins unexpectedly reappearing on resume

A tab within my view pager contains a map view is showing some unexpected behaviour. For some reason whenever I go to a different tab and return to the map view tab, all 4 pins within my map view appear when only 2 of them are supposed to appear. Does anyone know why this has happened? What can be done in order to prevent this from happening?
Stage 1 (flicked the top switch)
Stage 2 (flicked the bottom switch)
Stage 3 (switching to a different tab, then returning back to the map tab)
Java class
public class FragmentCentralPark extends android.support.v4.app.Fragment implements OnMapReadyCallback {
public FragmentCentralPark() {
// Required empty constructor
}
GoogleMap mGoogleMap;
MapView mMapView;
SwitchCompat swt0;
SwitchCompat swt1;
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_centralpark, container, false);
mMapView = (MapView) v.findViewById(R.id.map_centralpark);
mMapView.onCreate(savedInstanceState);
mMapView.getMapAsync(this); //this is important
swt0 = (SwitchCompat) v.findViewById(R.id.switch0_map_centralpark);
swt1 = (SwitchCompat) v.findViewById(R.id.switch1_map_centralpark);
return v;
}
#Override
public void onMapReady(GoogleMap googleMap) {
mGoogleMap = googleMap;
mGoogleMap.getUiSettings().setZoomControlsEnabled(true);
mGoogleMap.setBuildingsEnabled(true);
mGoogleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
swt0.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
initMap0(isChecked);
}
});
swt1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
initMap1(isChecked);
}
});
initMap0(swt0.isChecked());
initMap1(swt1.isChecked());
// Add markers and move the camera
LatLng centralpark_museum1 = new LatLng(40.785407, -73.957145);
mGoogleMap.addMarker(new MarkerOptions()
.position(centralpark_museum1)
);
LatLng centralpark_museum2 = new LatLng(40.782993, -73.958985);
mGoogleMap.addMarker(new MarkerOptions()
.position(centralpark_museum2)
);
// Updates the location and zoom level of the MapView
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(new LatLng(40.780437, -73.981063), 16);
mGoogleMap.animateCamera(cameraUpdate);
}
#Override
public void onResume() {
super.onResume();
mMapView.onResume();
}
#Override
public void onPause() {
super.onPause();
mMapView.onPause();
}
#Override
public void onDestroy() {
super.onDestroy();
mMapView.onDestroy();
}
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mMapView.onSaveInstanceState(outState);
}
#Override
public void onLowMemory() {
super.onLowMemory();
mMapView.onLowMemory();
}
private void initMap0(boolean isChecked){
if (isChecked) {
mGoogleMap.setMapStyle(new MapStyleOptions(getResources()
.getString(R.string.style_json)));
} else {
mGoogleMap.setMapStyle(null);
}
}
private void initMap1(boolean isChecked){
if (isChecked) {
mGoogleMap.clear();
// Add markers and move the camera
LatLng centralpark__theatre1 = new LatLng(40.780287, -73.968832);
mGoogleMap.addMarker(new MarkerOptions()
.position(centralpark_theatre1)
);
LatLng centralpark__theatre2 = new LatLng(40.780437, -73.981063);
mGoogleMap.addMarker(new MarkerOptions()
.position(centralpark_theatre2)
);
// Updates the location and zoom level of the MapView
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(new LatLng(40.780437, -73.981063), 16);
mGoogleMap.animateCamera(cameraUpdate);
} else {
mGoogleMap.clear();
// Add markers and move the camera
LatLng centralpark_museum1 = new LatLng(40.785407, -73.957145);
mGoogleMap.addMarker(new MarkerOptions()
.position(centralpark_museum1)
);
LatLng centralpark_museum2 = new LatLng(40.782993, -73.958985);
mGoogleMap.addMarker(new MarkerOptions()
.position(centralpark_museum2)
);
// Updates the location and zoom level of the MapView
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(new LatLng(40.780437, -73.981063), 16);
mGoogleMap.animateCamera(cameraUpdate);
}
}
}

Unable to load map into FrameLayout

MapFragment.java
public class MapFragment extends SupportMapFragment implements OnMapReadyCallback{
private GoogleMap googleMap;
private Context context;
public MapFragment(){
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
super.onCreateView(inflater, container, savedInstanceState);
View root = inflater.inflate(R.layout.item_individual_warehouse, null, false);
onMapReady(googleMap);
return root;
}
private void initializeMap(){
if(googleMap == null) {
SupportMapFragment fm =(SupportMapFragment)getChildFragmentManager().findFragmentById(R.id.map);
fm.getMapAsync(this);
if(googleMap == null){
Toast.makeText(context,"Sorry! We are unable to load maps", Toast.LENGTH_SHORT).show();
}
}
}
#Override
public void onMapReady(GoogleMap gm) {
googleMap = gm;
initializeMap();
}
}
In my oncreate method in RetrieveIndividualWarehouseSales.java
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.item_individual_warehouse);
new RetrieveItem().execute();
MapFragment mf = new MapFragment();
mf.onMapReady(googleMap);
}
item_individual_warehouse.xml
<FrameLayout
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/sales_location"/>
Error is:
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.google.android.gms.maps.SupportMapFragment.getMapAsync(com.google.android.gms.maps.OnMapReadyCallback)' on a null object reference
I am trying to instantiate the MapFragment object in RetrieveIndividualWarehouseSales.java so that I can display the map in item_individual_warehouse.xml which contains a bunch of textviews and one framelayout which is meant for map.
Use this.
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);
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
checkLocationPermission();
}
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) {
buildGoogleApiClient();
mGoogleMap.setMyLocationEnabled(true);
}
}
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;
public boolean 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)) {
//TODO:
// Show an expanation 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.
//Prompt the user once explanation has been shown
//(just doing it here for now, note that with this code, no explanation is shown)
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION);
} else {
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION);
}
return false;
} else {
return true;
}
}
#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
}
}
}

Google Maps - I am trying to update the current location but my App is closed as soon as I open it. Here is the code-

Every Time I open the App it says unfortunately your App has been stopped.
I am not able to find the bug
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
private GoogleMap mMap;
protected LocationManager locationManager;
TextView tv1;
#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);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 3000, 0, (android.location.LocationListener) mLocationListener);
}
private final LocationListener mLocationListener = new LocationListener() {
#Override
public void onLocationChanged(final Location location) {
//your code here
tv1 = (TextView) findViewById(R.id.tv1);
tv1.setText("Latitude:" + location.getLatitude() + ", Longitude:" + location.getLongitude());
}
};
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
mMap.setMyLocationEnabled(true);
}
}
Here is the log Error -
java.lang.RuntimeException: Unable to start activity
ComponentInfo{manishsaran.maper/manishsaran.maper.MapsActivity}:
java.lang.ClassCastException: manishsaran.maper.MapsActivity$1 cannot
be cast to android.location.LocationListener
Issue is your LocationListener you should import it through
import android.location.LocationListener;
and Implement its all method like this:
private final LocationListener mLocationListener = new LocationListener() {
#Override
public void onLocationChanged(final Location location) {
//your code here
tv1 = (TextView) findViewById(R.id.tv1);
tv1.setText("Latitude:" + location.getLatitude() + ", Longitude:" + location.getLongitude());
}
#Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
#Override
public void onProviderEnabled(String s) {
}
#Override
public void onProviderDisabled(String s) {
}
};
And there is no need of casting your locationListener :
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 3000, 0, mLocationListener);

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