I have an app. I want this app to create a new folder which can only be opened by this app and no one else. I want this folder outside the application internal storage, so that it is visible in file manager, but it can't be opened because of folder permission (rwx --- ---).
So is there a way create a folder, make this app its owner, and change its permission so that only this app can open it and no one else (not even file manager or gallery etc.)
In order to change file's permission. First you should get root ownership of the device. Which means YOU HAVE TO ROOT the DEVICE!
Android Application SandBox