In what programming language are Android application designs created?

Question

Android

The question is, as far as I understand, the creation of a design for an application takes place in XML files using standard functions, for example:
android:background

The question is, is it possible and worth using CSS to create a design? Or is it possible to use another language?

Answer 1

Not design, but user interface.
Recently, I also wanted to write a layout in CSS, manually writing dimens for a custom element is still a pleasure xD
Complex interface - programmatically.
Interface of average complexity - layout + drawable (XML).
Simple interface - layout (XML).

Answer 2

You can draw a form (screen) programmatically.
But writing 10 function calls for each element is laborious.
To simplify this, we came up with an xml schema. used in layout files.
Design in html, css, js is a C# (Charpa) approach.
Cross-platform development through another intermediate layer.
It is not required to write all khml handles. Android Studio has a good visual editor.
Depending on the growth of experience, making edits in text form will become easier than poking around in the fields of wizards. Some things still cannot be done through a static form definition and small inserts of modifiers will have to be written programmatically.

Answer 3

Design is handled by the development environment. Or does it mean only Android Studio?
For example, I use the visual editor