android - 如何在 android lollipop 中使用 Fused Location Provider 客户端

Question

我正在尝试使用“FusedLocationProviderClient”获取我当前的位置以在地图上显示它，但它在 android lollipop 中不起作用，尽管它在所有上述版本中都可以正常工作。下面是我正在尝试做的代码示例。

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

            return v;
        }
        fusedLocationProviderClient.getLastLocation().addOnSuccessListener(new OnSuccessListener<Location>() {
            @Override
            public void onSuccess(Location location) {
                mLastLocation=location;

                getAltitude();
                if(mMap!=null){

                    if(location!=null){
                        Marker marker=mMap.addMarker(new MarkerOptions().position(new LatLng(location.getLatitude(),location.getLongitude())));
                        mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(location.getLatitude(),location.getLongitude()),15.0f));
                    }
                    }
            }
        });