It's a good lecture. I'll review it later.

cleancode1906

This course is a course to learn how to develop Android applications using the Kotlin language. It consists of a total of 4 parts.
This course is the third lecture, and you can learn about various action bars and data management methods.

softcampus

Yoon Jae-seong's Kotlin-based Android App Development Part 3 - Data Management and Network

입문

초급

중급이상

안드로이드

Android

코틀린

Kotlin

Introduction to the course and development environment setup

Action Bar on Android

Various View Configurations Using the Action Bar

Data Input/Output

Resource Management

android sensor

network