It seems like it explains well and easily how to use UI related components. I can follow along comfortably.

parkjb215682

This course is a new course for 2020. It was created by considering the shortcomings and newly added parts of the existing course. Through this course, you can learn how to use almost all UI elements required for Android application development and Android app development using the Kotlin language. In addition, only the updated parts will be replaced in the future.

softcampus

Yoon Jae-seong's Kotlin-based Android App Development Part 1 - UI Programming

입문

초급

중급이상

안드로이드

Android

코틀린

Kotlin

Introduction to Android and setting up a development environment

Concept of View and layout

Widget concept and usage

AdapterView