位置权限未随设备打开

Question

我已经使用FusedLocationProviderClient实现了location。我的应用程序中的问题是权限对话框无法打开设置中的位置。在开始获取更新之前，我必须手动打开它。

我已经使用ContextCompat and ActivityCompat类检查并请求了权限，但在我手动按下按钮之前没有任何反应。这是我这边FusedLocationProviderClient或编程错误的错误吗？我使用过location manager and Fused Location ProviderAPI，以前从未遇到过这种情况。

这是我的代码：

public class HomeFragment extends BaseFragment implements OnMapReadyCallback {
private static final String TAG = HomeFragment.class.getSimpleName();
private Toolbar toolbar;
private TextView driverStatusTV;
public static MaterialAnimatedSwitch statusSwitch;
private FusedLocationProviderClient providerClient;
public static Location mLastLocation;
public static LocationRequest locationRequest;
public GoogleMap mGmap;
public static Marker currentMarker;
public static double latitude = 0f, longitude = 0f;
private static boolean isLocationGranted = false;
public static final int UPDATE_INTERVAL = 15000;
public static final int FASTEST_INTERVAL = 8000;
public static final int DISPLACEMENT = 10;
public static final int PLAY_SERVICES_REQ_CODE = 9009;
public static final int PLAY_SERVICES_RESOLUTION_REQ_CODE = 9090;
private SupportMapFragment mapFragment;
public HomeFragment() {
// Required empty public constructor
}
private void initViews(View view) {
toolbar = view.findViewById(R.id.toolbar);
driverStatusTV = view.findViewById(R.id.driverStatusTV);
statusSwitch = view.findViewById(R.id.statusSwitch);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_home, container, false);
initViews(view);
((AppCompatActivity) getActivity()).setSupportActionBar(toolbar);
checkPerms();
providerClient = LocationServices.getFusedLocationProviderClient(getActivity());
mapFragment = (SupportMapFragment) this.getChildFragmentManager().findFragmentById(R.id.mapFragment);
mapFragment.getMapAsync(this);
driverStatusTV.setText("OFFLINE");
statusSwitch.setOnCheckedChangeListener(new MaterialAnimatedSwitch.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(boolean b) {
if (b) {
Snackbar.make(getActivity().findViewById(android.R.id.content), "You are Now Online", Snackbar.LENGTH_LONG).show();
if (checkPerms()) {
startLocationListener();
driverStatusTV.setText("ONLINE");
}
} else {
Snackbar.make(getActivity().findViewById(android.R.id.content), "You are Now Offline", Snackbar.LENGTH_LONG).show();
mGmap.setIndoorEnabled(false);
if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
mGmap.setMyLocationEnabled(false);
stopLocationListener();
driverStatusTV.setText("OFFLINE");
if (currentMarker != null){
currentMarker.remove();
}
}
}
});
return view;
}
private void stopLocationListener() {
if (providerClient != null){
providerClient.removeLocationUpdates(locationCallback);
}
}
@Override
public void onPause() {
super.onPause();
stopLocationListener();
}
private void startLocationListener() {
locationRequest = LocationRequest.create();
locationRequest.setSmallestDisplacement(DISPLACEMENT);
locationRequest.setFastestInterval(FASTEST_INTERVAL);
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(UPDATE_INTERVAL);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder();
builder.addLocationRequest(locationRequest);
LocationSettingsRequest settingsRequest = builder.build();
SettingsClient client = LocationServices.getSettingsClient(getActivity());
client.checkLocationSettings(settingsRequest);
displayLocation();
}
private boolean checkPerms() {
if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
reqPerms();
isLocationGranted = false;
Log.d(TAG, "Permission Value:t" + isLocationGranted);
} else {
isLocationGranted = true;
Log.d(TAG, "Permission Value:t" + isLocationGranted);
}
return isLocationGranted;
}
private void reqPerms() {
ActivityCompat.requestPermissions(getActivity(), new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, AppConstants.LOC_PERM_CODE);
}
private void displayLocation() {
if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
reqPerms();
} else {
if (statusSwitch.isChecked()) {
providerClient.requestLocationUpdates(locationRequest, locationCallback, Looper.myLooper());
mGmap.setIndoorEnabled(true);
mGmap.setMyLocationEnabled(true);
} else {
mGmap.setIndoorEnabled(false);
mGmap.setMyLocationEnabled(false);
}
}
}
private LocationCallback locationCallback = new LocationCallback() {
@Override
public void onLocationResult(LocationResult locationResult) {
Location location = locationResult.getLastLocation();
mLastLocation = location;
if (currentMarker != null) {
currentMarker.remove();
}
latitude = mLastLocation.getLatitude();
Log.d(TAG, "Lat:t" + latitude);
longitude = mLastLocation.getLongitude();
Log.d(TAG, "Long:t" + longitude);
MarkerOptions options = new MarkerOptions();
options.position(new LatLng(latitude, longitude));
options.title("Driver");
//options.icon(BitmapDescriptorFactory.fromResource(R.drawable.car)); // throws error
currentMarker = mGmap.addMarker(options);
rotateMarker(currentMarker, 360, mGmap);
mGmap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(latitude,longitude), 18.0f));
}
};
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case AppConstants.LOC_PERM_CODE:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
isLocationGranted = true;
if (checkPlayServices() && statusSwitch.isChecked()) {
startLocationListener();
} else {
Snackbar.make(getActivity().findViewById(android.R.id.content), "Google Play Services Not Supported on Your Device", Snackbar.LENGTH_LONG).show();
}
}
break;
}
}
public boolean checkPlayServices() {
int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getActivity());
if (resultCode != ConnectionResult.SUCCESS) {
if (GooglePlayServicesUtil.isUserRecoverableError(resultCode)) {
GooglePlayServicesUtil.getErrorDialog(resultCode, getActivity(), AppConstants.PLAY_SERVICES_RESOLUTION_REQUEST).show();
} else {
Snackbar.make(getActivity().findViewById(android.R.id.content), "Play Services NOT Supported on Your Device", Snackbar.LENGTH_LONG).show();
getActivity().finish();
getActivity().moveTaskToBack(true);
}
return false;
}
return true;
}
private void rotateMarker(final Marker currentMarker, final float i, GoogleMap mGmap) {
final Handler handler = new Handler();
final long start = SystemClock.uptimeMillis();
final float startRotation = currentMarker.getRotation();
final int duration = 1500;
final Interpolator interpolator = new LinearInterpolator();
handler.postDelayed(new Runnable() {
@Override
public void run() {
long elapsed = SystemClock.elapsedRealtime() - start;
float t = interpolator.getInterpolation(elapsed / duration);
float rot = t * i + (1 - t) * startRotation;
currentMarker.setRotation(-rot > 180 ? rot / 2 : rot);
if (t < 1.0) {
handler.postDelayed(this, 16);
}
}
}, duration);
}
@Override
public void onMapReady(GoogleMap googleMap) {
mGmap = googleMap;
startLocationListener();
}

}

Alos，标记上的设置图标会引发此错误com.google.maps.api.android.lib6.common.apiexception.b: Failed to decode image. The provided image must be a Bitmap.

谁能帮我解决这两个问题？谢谢

Answer 1

您的onRequestPermissionsResult永远不会被调用，您正在从您的活动请求权限，并且您的活动的onRequestPermissionsResult将被调用。如果您希望在片段中回调权限，只需在请求权限时删除活动

private void reqPerms() {
requestPermissions(getActivity(), new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, AppConstants.LOC_PERM_CODE);
}

如果要访问此方法，则片段必须是 supportFragment