App Data Security- Dont want user to access my android app files -

i don't want user access app files in computer or laptop. there way solve issue? other using encryption or decryption.

if hiding them option you, can following (taken official docs):

hiding files media scanner

include empty file named .nomedia in external files directory (note dot prefix in filename). prevents media scanner reading media files , providing them other apps through mediastore content provider. however, if files private app, should save them in app-private directory.