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

If you followed along in Part 2, you’ve already loaded your source code and resource files into your Android Studio project. Now you’re ready to build the app for the first time.

A buggy app is a sure way to drive away potential customers. Logcat and Debug are two tools that come built-in to Android Studio, which you can use to identify and fix bugs in your Android code.