How to get the exact size of cache directory : android

Question

NEED: I simply trying to get occupied cache size of each application which is installed in my phone.

MY APPROACH:

PackageManager packageManager = get         


        

Answer 1

Calling length on a directory doesn't always return the correct size. You could try to iterate over the file list and add up all file sizes to get the total directory size.

Like this:

long size = 0;
File[] files = cacheDirectory.listFiles();
for (File f:files) {
    size = size+f.length();
}

Answer 2

you will get cachesize from this function

  public void clearCache() {
   //clear memory cache

   long size = 0;
   cache.clear();

  //clear SD cache
   File[] files = cacheDir.listFiles();
    for (File f:files) {
      size = size+f.length();
     // f.delete();
  }
}

Answer 3

This has been more accurate to me:

private void initializeCache() {
    long size = 0;
    size += getDirSize(this.getCacheDir());
    size += getDirSize(this.getExternalCacheDir());
    ((TextView) findViewById(R.id.yourTextView)).setText(readableFileSize(size));
}

public long getDirSize(File dir){
    long size = 0;
    for (File file : dir.listFiles()) {
        if (file != null && file.isDirectory()) {
            size += getDirSize(file);
        } else if (file != null && file.isFile()) {
            size += file.length();
        }
    }
    return size;
}

public static String readableFileSize(long size) {
    if (size <= 0) return "0 Bytes";
    final String[] units = new String[]{"Bytes", "kB", "MB", "GB", "TB"};
    int digitGroups = (int) (Math.log10(size) / Math.log10(1024));
    return new DecimalFormat("#,##0.#").format(size / Math.pow(1024, digitGroups)) + " " + units[digitGroups];
}

Original post of the string to bytes formatting code