The app closes when I open the fragment that contains the map of google maps and generates the following error in the logcat
Process: com.example.matia.tonum, PID: 11224
java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference
at android.location.GeocoderParams.<init>(GeocoderParams.java:50)
at android.location.Geocoder.<init>(Geocoder.java:83)
at com.example.matia.tonum.Fragment.GeoFragment.setLocation(GeoFragment.java:84)
at com.example.matia.tonum.Fragment.GeoFragment$1.onLocationChanged(GeoFragment.java:127)
at android.location.LocationManager$ListenerTransport._handleMessage(LocationManager.java:281)
at android.location.LocationManager$ListenerTransport.access$000(LocationManager.java:210)
at android.location.LocationManager$ListenerTransport$1.handleMessage(LocationManager.java:226)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5258)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:898)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:693)
And this is the code of my fragment
public class GeoFragment extends Fragment implements OnMapReadyCallback {
private SupportMapFragment mapFragment;
private GoogleMap mMap;
private Marker marcador;
double lat = 0.0;
double lng = 0.0;
String mensaje1;
String direccion = "";
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
final View vista = inflater.inflate(R.layout.fragment_geo, container, false);
if (mapFragment == null) {
mapFragment = SupportMapFragment.newInstance();
mapFragment.getMapAsync(this);
}
getChildFragmentManager().beginTransaction().replace(R.id.map, mapFragment).commit();
return vista;
}
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
miUbicacion();
}
//activar los servicios del gps cuando esten apagados
public void locationStart() {
LocationManager mlocManager = (LocationManager) getActivity().getSystemService(Context.LOCATION_SERVICE);
final boolean gpsEnabled = mlocManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
if (!gpsEnabled) {
Intent settingsIntent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(settingsIntent);
}
}
public void setLocation(Location loc) {
//Obtener la direccion de la calle a partir de la latitud y la longitud
if (loc.getLatitude() != 0.0 && loc.getLongitude() != 0.0) {
try {
Geocoder geocoder = new Geocoder(getActivity(), Locale.getDefault());
List<Address> list = geocoder.getFromLocation(
loc.getLatitude(), loc.getLongitude(), 1);
if (!list.isEmpty()) {
Address DirCalle = list.get(0);
direccion = (DirCalle.getAddressLine(0));
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
//agregar el marcador en el mapa
private void AgregarMarcador(double lat, double lng) {
LatLng coordenadas = new LatLng(lat, lng);
CameraUpdate MiUbicacion = CameraUpdateFactory.newLatLngZoom(coordenadas, 16);
if (marcador != null) marcador.remove();
marcador = mMap.addMarker(new MarkerOptions()
.position(coordenadas)
.title("Dirección: " + direccion)
.icon(BitmapDescriptorFactory.fromResource(R.mipmap.ic_launcher)));
mMap.animateCamera(MiUbicacion);
}
//actualizar la ubicacion
private void ActualizarUbicacion(Location location) {
if (location != null) {
lat = location.getLatitude();
lng = location.getLongitude();
AgregarMarcador(lat, lng);
}
}
//control del gps
LocationListener locListener = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
ActualizarUbicacion(location);
setLocation(location);
}
@Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
@Override
public void onProviderEnabled(String s) {
mensaje1 = ("GPS Activado");
Mensaje();
}
@Override
public void onProviderDisabled(String s) {
mensaje1 = ("GPS Desactivado");
locationStart();
Mensaje();
}
};
private static int PETICION_PERMISO_LOCALIZACION = 101;
private void miUbicacion() {
if (ActivityCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission
(getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(getActivity(),
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
PETICION_PERMISO_LOCALIZACION);
return;
} else {
LocationManager locationManager = (LocationManager) getActivity().getSystemService(Context.LOCATION_SERVICE);
Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
ActualizarUbicacion(location);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,1200,0,locListener);
}
}
public void Mensaje() {
Toast toast = Toast.makeText(getActivity(), mensaje1, Toast.LENGTH_LONG);
//toast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
toast.show();
}
}
This is part of line 84, since the trycatch is line 84:
public void setLocation(Location loc) {
//Obtener la direccion de la calle a partir de la latitud y la longitud
if (loc.getLatitude() != 0.0 && loc.getLongitude() != 0.0) {
try {
Geocoder geocoder = new Geocoder(getActivity(), Locale.getDefault());
List<Address> list = geocoder.getFromLocation(
loc.getLatitude(), loc.getLongitude(), 1);
if (!list.isEmpty()) {
Address DirCalle = list.get(0);
direccion = (DirCalle.getAddressLine(0));
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
I hope you can help me ...
Of course, thank you very much for everything!