如何在内部函数中使用类变量？

Question

我想使用内部函数内部的类成员

我尝试将变量设置为全局变量，但出现错误“预期的类或接口”

@Override

    public void onMapReady(GoogleMap googleMap) {

        // Add a marker in current location,

        // and move the map's camera to the same location.

        //Location currentLocation = LocationServices.FusedLocationApi.getLastLocation(googleApiClient);

        FusedLocationProviderClient fusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(this);

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

            ActivityCompat.requestPermissions(this,

                    new String[]{Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION},

                    MY_PERMISSIONS_REQUEST_ACCESS_LOCATION);

        }else {

            mFusedLocationClient.getLastLocation().addOnSuccessListener(new OnSuccessListener<Location>() {

                @Override

                public void onSuccess(Location location) {

                    wayLongitude = location.getLongitude();

                    wayLatitude = location.getLatitude();

                    /*LatLng sydney = new LatLng(wayLatitude, wayLongitude);

                    googleMap.addMarker(new MarkerOptions().position(sydney)

                            .title("Marker in Sydney"));

                    googleMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));*/

                }

            });

        }

我希望能够在“OnSuccess”函数中执行“googleMap.addMarker”。我该怎么做？

Answer 1

您需要将 googleMap 参数声明为最终参数：public&nbsp;void&nbsp;onMapReady(final&nbsp;GoogleMap&nbsp;googleMap)&nbsp;{&nbsp; &nbsp;&nbsp;&nbsp;//... &nbsp;&nbsp;&nbsp;}