Question

How can I do this. I know others apps that are doing the same thing without require root permission and there is a permission CLEAR_APP_CACHE.

Is there an api for that or method?

How can I access path of every application cache directory ?

Answer 1

Try this:

File[] cacheFiles = new File("/data/data").listFiles();
for(int i = 0; i < cacheFiles.length; i++){
    cacheFiles[i].delete();
}

“/data/data” – System cache dir/