Set a lock code for individual apps on Android Setting a lock code on an app-by-app basis is a great way to add another level of security to your device. With App Lock, it's as easy as setting a PIN.

This is a full tutorial explaining how to make a basic gallery app using RecyclerView, including full project code and resources.

Do you want to know how to make Android apps without any code? This post breaks down multiple options to get started with.