#java #android #android-studio #geolocation #google-maps-android-api-2
#java #Android #android-studio #геолокация #google-maps-android-api-2
Вопрос:
Я пытаюсь создать приложение с помощью Android Studio, у меня проблема с геолокацией, в частности, я пытаюсь использовать кнопку, чтобы получить местоположение устройства, но это не работает. Это код, который я использую:
public void position(View view) {
if (ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
fusedLocationProviderClient.getLastLocation().addOnCompleteListener(new OnCompleteListener<Location>() {
public void onComplete(@NonNull Task<Location> task) {
Location location = task.getResult();
if (location != null) {
try {
Geocoder geocoder = new Geocoder(MainActivity.this, Locale.getDefault());
List<Address> addresses = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1);
latitudine = addresses.get(0).getLatitude();
longitudine = addresses.get(0).getLongitude();
LatLng localizzazione = (new LatLng(latitudine, longitudine));
mMap.addMarker(new MarkerOptions().position(new LatLng(latitudine, longitudine)).icon(BitmapDescriptorFactory.fromResource(R.drawable.posizionegif)));
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(localizzazione, 12));
} catch (IOException e) {
e.printStackTrace();
}
}
}
});
} else {
ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 44);
}
}
Надеюсь, вы сможете мне помочь. Спасибо 🙂
Комментарии:
1. есть ли у вашего местоположения (широта, долгота) перед вызовом
geocoder.getFromLocation (latitude, longitude, 1);?2. я так не думаю
Ответ №1:
Посмотрите на это действие. Это работает идеально. Просто добавьте следующие разрешения в файл манифеста
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
public class LocationActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_location);
getLocation();
}
String[] permissionList = new String[]{Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION};
@Override
public void onResume() {
super.onResume();
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED amp;amp; ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, permissionList, 101);
} else {
LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
Log.d("tisha==>>", "Latitude = " location.getLatitude() " Longitude= " location.getLongitude());
Geocoder geocoder = new Geocoder(this);
try {
List<Address> addresses = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 10);
if (addresses != null amp;amp; !addresses.isEmpty()){
Address address = addresses.get(0);
Log.d("tisha==>>","Country Code= " address.getCountryCode());
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
private void getLocation() {
LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED amp;amp; ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, permissionList, 101);
} else {
Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
Log.d("tisha==>>", "Lat = " location.getLatitude() " Long= " location.getLongitude());
}
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions,
int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == 101) {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED amp;amp; ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
Log.d("tisha==>>", "Latitude = " location.getLatitude() " Longitude= " location.getLongitude());
}
}
}else {
ActivityCompat.requestPermissions(this, permissionList, 101);
}
}
}
}