https://developer.android.com/courses/android-basics-kotlin/course Welcome to Android Basics in Kotlin! In this course, you'll learn the basics of building Android apps with the Kotlin programming language. Along the way, you'll develop a collection of apps to start your journey as an Android developer. This course will help prepare you for the Associate Android Developer certification exam.
https://developers.google.com/profile/u/108741710441883109979?utm_source=developer.android.com
Take your first steps programming in Kotlin, add images and text to your Android apps, and learn how to use classes, objects, and conditionals to create an interactive app for your users.
Build two different apps, and improve the user interface of your app by learning about layouts, Material Design guidelines, and best practices for UI development.
Enhance your users’ ability to navigate across, into and back out from the various screens within your app for a consistent and predictable user experience.
Add another screen to an app by adding a second activity, and use an intent to navigate to it. Also, learn the basics of the activity lifecycle as you navigate into and out of different activities.