Specifically, XML sets the layout of things like buttons and images, ... Open up the activity_main.xml file in Android Studio and get your first introduction to XML.

An Android UI is based on the View and ViewGroup objects. A View is the basic building block of a UI component. It's a rectangular region responsible for drawing and handling events. A View is the ...

Android Studio is simply where you will write, ... This code is the file called activity_main.xml. XML is a markup language that defines the layout of a document ... (elements like buttons, ...