https://developer.android.com/get-started/codelabs
has a bunch of tutorials for specific types of functionality in android apps
https://developer.android.com/get-started/codelabs
has a bunch of tutorials for specific types of functionality in android apps
On 7 May 2019, Google announced that the Kotlin programming language had become its preferred language for Android app developers.[7] Since the release of Android Studio 3.0 in October 2017, Kotlin has been included as an alternative to the standard Java compiler.
Kotlin is Google's preferred programming language for Android apps since mid 2019. Is included in AndroidStudio
Kotlin programming language, object oriented, java interoperability. Integrated in Android Studio
Prerequisites Basic Kotlin knowledge
Kotlin https://kotlinlang.org/
Tutorial for Android Studio, to create a first simple app
basic configuration of Android Studio