public static long getInternalCacheMemoryInBytes(Activity act)
 {
     if (act != null)
     {
         string path = getInternalStorageCacheDir(act);
         StatFs stat = new StatFs(path);
         return(stat.getAvailableBytes());
     }
     else
     {
         Log.e(TAG, "activity is null getInternalCacheMemoryInBytes method");
     }
     return(0);
 }