когда я использую mapbox, у меня возникла проблема, связанная с GPS.
public class MainActivity extends AppCompatActivity implements OnMapReadyCallback,PermissionsListener {
FirebaseAuth auth;
private MapView mapView;
private MapboxMap mapboxMap;
private PermissionsManager permissionsManager;
Location originLocation;
LocationEngine locationEngine;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Mapbox.getInstance(this, "pk.eyJ1Ijoibml0eWFhcm9yYTcyIiwiYSI6ImNqcHpqeDdjYjAwenU0OG82MDBuZWxtdGIifQ.mMPtHap9shSb-WWzZFyPew");
setContentView(R.layout.activity_main);
mapView = findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
/*CameraPosition position = new CameraPosition.Builder()
.target(new LatLng(25.3254275, 83.0088737))
.zoom(14)
.tilt(20)
.build();*/
auth = FirebaseAuth.getInstance();
mapView.getMapAsync(this);
/*@Override
public void onMapReady(MapboxMap mapboxMap) {
mapboxMap.addMarker(new MarkerOptions()
.position(new LatLng(25.3254275,83.0088737))
.title("My Location")
.snippet("bro"));
mapboxMap.animateCamera(CameraUpdateFactory.newCameraPosition(position), 200);*/
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
permissionsManager.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
@Override
@SuppressWarnings({"MissingPermission"})
public void onStart() {
super.onStart();
mapView.onStart();
}
@Override
public void onResume() {
super.onResume();
mapView.onResume();
}
@Override
public void onPause() {
super.onPause();
mapView.onPause();
}
@Override
public void onStop() {
super.onStop();
mapView.onStop();
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
@Override
protected void onDestroy() {
super.onDestroy();
mapView.onDestroy();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
@Override
public void onExplanationNeeded(List<String> permissionsToExplain) {
Toast.makeText(this, "Explanation needed", Toast.LENGTH_LONG).show();
}
@Override
public void onPermissionResult(boolean granted) {
if (granted) {
initializeLocationEngine();
enableLocationComponent();
} else {
Toast.makeText(this, "Permission Needed", Toast.LENGTH_LONG).show();
finish();
}
}
@Override
public void onMapReady(MapboxMap mapboxMap) {
MainActivity.this.mapboxMap = mapboxMap;
locationEnable();
}
void locationEnable() {
if (PermissionsManager.areLocationPermissionsGranted(this)) {
initializeLocationEngine();
enableLocationComponent();
} else {
permissionsManager = new PermissionsManager(this);
permissionsManager.requestLocationPermissions(this);
}
}
@SuppressWarnings({"MissingPermission"})
private void enableLocationComponent() {
if (PermissionsManager.areLocationPermissionsGranted(this)) {
Location lastLocation = locationEngine.getLastLocation();
FirebaseUser firebaseUser = auth.getCurrentUser();
String userId = firebaseUser.getUid();
DatabaseReference reference = FirebaseDatabase.getInstance().getReference("Users").child(userId);
reference.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
HashMap user = (HashMap) dataSnapshot.getValue();
Log.i("userid", user.get("userId").toString());
Log.i("username", user.get("username").toString());
reference.child("latLng").addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
Log.i("userblaa", dataSnapshot.toString());
if(lastLocation!=null){
originLocation=lastLocation;
}
Log.i("Location",String.valueOf(lastLocation.getLatitude())+lastLocation.getLongitude());
LatLng latLng = new LatLng(originLocation.getLatitude(), originLocation.getLongitude());
IconFactory iconFactory = IconFactory.getInstance(MainActivity.this);
Bitmap iconDrawable = BitmapFactory.decodeResource(getResources(),R.drawable.marker);
iconDrawable=Bitmap.createScaledBitmap(iconDrawable, 70, 70, true);
com.mapbox.mapboxsdk.annotations.Icon icon=iconFactory.fromBitmap(iconDrawable);
mapboxMap.addMarker(new MarkerOptions()
.position(new LatLng(originLocation.getLatitude(), originLocation.getLongitude()))
.setIcon(icon)
);
mapboxMap.animateCamera(CameraUpdateFactory.newLatLngZoom(
new LatLng(originLocation.getLatitude(), originLocation.getLongitude()), 12));
reference.child("latLng").setValue(latLng);
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
//Log.i("userlatlng",user.getLatLng().getLatitude()+" "+user.getLatLng().getLongitude());
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
это сообщение об ошибке:
E / AndroidRuntime: FATAL EXCEPTION: main
Процесс: com.example.nitya.starein, PID: 8819
java.lang.NullPointerException: попытка вызвать виртуальный метод 'double android.location.Location.getLatitude ()' для ссылки на пустой объект
в com.example.nitya.starein.MainActivity $ 1 $ 1.onDataChange (MainActivity.java:210)
на com.google.firebase.database.core.ValueEventRegistration.fireEvent (com.google.firebase: firebase-database @@ 16.0.5: 75)
на com.google.firebase.database.core.view.DataEvent.fire (com.google.firebase: firebase-database @@ 16.0.5: 63)
на com.google.firebase.database.core.view.EventRaiser $ 1.run (com.google.firebase: firebase-database @@ 16.0.5: 55)
на android.os.Handler.handleCallback (Handler.java:739)
на android.os.Handler.dispatchMessage (Handler.java:95)
на android.os.Looper.loop (Looper.java:148)
на android.app.ActivityThread.main (ActivityThread.java:5417)
в java.lang.reflect.Method.invoke (родной метод)
на com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run (ZygoteInit.java:726)
на com.android.internal.os.ZygoteInit.main (ZygoteInit.java:616)