How to get cache size in Android

Question

I\'m using fedor\'s lazy loading list implementation in my test application where I can clear the cache with a single button click. How can I get the cache size of the loade

Answer 1

To find the size of the cache directory use the codebelow.

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();
    }
}

This will return the number of bytes.

Answer 2

This has been more accurate to me:

private void initializeCache() {
    long size = 0;
    size += getDirSize(this.getCacheDir());
    size += getDirSize(this.getExternalCacheDir());
}

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;
}

Answer 3

...and to clear cache, just delete the directory and recreate an empty one.