错误变量url已在范围中定义

Question

 case R.id.hospitals_nearby:

                    mMap.clear();
                    String url = getUrl(latitide, langitude, hospitals);
                    transferData[0] = mMap;
                    transferData[1] = url;
                    getNearbyPlaces.execute(transferData);

 1. List item

Toast.makeText(this, "searching for near by hospital...", Toast.LENGTH_SHORT).show();
Toast.makeText(this, "showing near by hospital...", Toast.LENGTH_SHORT).show();
break;