private static boolean isWifi(Context context) {              ConnectivityManager connectivityManager =(ConnectivityManager) context                    .getSystemService(Context.CONNECTIVITY_SERVICE);              NetworkInfo activeNetworkInfo =connectivityManager.getActiveNetworkInfo();              if (activeNetworkInfo != null &&activeNetworkInfo.getType() == connectivityManager.TYPE_WIFI){                 return true;              }              return false;            }