Question

我正在制作一个使用maps API的应用。我想要的是创建一个权限弹出窗口。当用户点击允许时，它应放大到他当前的位置。现在我想决定如果他不想允许这样做会发生什么。如果他否认此权限地图应缩放到自定义位置，但永远不会去那里并且它不会显示吐司。

我的地图片段如下所示 ：

请在此处获得许可：

 mapView.getMapAsync(new OnMapReadyCallback() {
    @Override
    public void onMapReady(GoogleMap googleMap) {
        mMap = googleMap;

        if (ActivityCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
                ActivityCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            if (ActivityCompat.shouldShowRequestPermissionRationale(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION)) {

            } else {
                ActivityCompat.requestPermissions(getActivity(), new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, MY_LOCATION_REQUEST_CODE);
            }
            return;
        }

        mMap.setMyLocationEnabled(true);
        LocationManager locationManager = (LocationManager) getActivity().getSystemService(Context.LOCATION_SERVICE);
        Criteria criteria = new Criteria();

        //Disable Map Toolbar:
        mMap.getUiSettings().setMapToolbarEnabled(false);

        // Get the name of the best provider and current location
        String provider = null;
        if (locationManager != null) {
            provider = locationManager.getBestProvider(criteria, true);
        }
        // Get current location
        Location myLocation = null;
        if (locationManager != null) {
            myLocation = locationManager.getLastKnownLocation(provider);
        }

        // Set default latitude and longitude to Greenwich
        double latitude = 51.4825766;
        double longitude = -0.0076589;

        // Get latitude and longitude of the current location and a LatLng object
        if (myLocation != null) {
            latitude = myLocation.getLatitude();
            longitude = myLocation.getLongitude();
        }

        CameraPosition cameraPosition = new CameraPosition.Builder()
                .target(new LatLng(latitude, longitude)).zoom(14).build();
        mMap.animateCamera(CameraUpdateFactory
                .newCameraPosition(cameraPosition));

}

此处捕获结果：

    @Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    if (requestCode == MY_LOCATION_REQUEST_CODE) {
        if (permissions.length == 1 &&
                permissions[0] == Manifest.permission.ACCESS_FINE_LOCATION &&
                grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            if (ActivityCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                // TODO: Consider calling
                //    ActivityCompat#requestPermissions
                // here to request the missing permissions, and then overriding
                //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
                //                                          int[] grantResults)
                // to handle the case where the user grants the permission. See the documentation
                // for ActivityCompat#requestPermissions for more details.
                return;
            }
            mMap.setMyLocationEnabled(true);
        } else {
            // Permission was denied. Display an error message.
            double latitude = 51.4825766;
            double longitude = -0.0076589;
            Toast.makeText(getContext(), "Permission denied", Toast.LENGTH_SHORT).show();          CameraPosition cameraPosition = new CameraPosition.Builder()
                            .target(new LatLng(latitude, longitude)).zoom(14).build();
                    mMap.animateCamera(CameraUpdateFactory
                            .newCameraPosition(cameraPosition));
        }
    }
}

Answer 1

我将权限放在父活动中以使其正常工作。

在地图精细位置权限被拒绝转到自定义位置

1 个答案: