Getting started with Kotlin and Android

Lucas Albuquerque

- Developer @ M4U

- Android specialist

Github: https://github.com/lalbuquerque

Linkedin: https://br.linkedin.com/in/lucasalbuquerque

Twitter: @lucas_albq

- Organizer @ Kotlin Rio Meetup

- Functional Programming enthusiast

Index

• Configuring the IDE / Plugin

• Creating and configuring project

• Giving birth to the first KT class

• Introducing KotlinX

• Lambdas first looking

• Extension functions

• First class functions

• Applying the knowledge

Configuring the IDE / Plugin

Preferences > Plugins > “kotlin” > Search in repositories > Install

Creating and configuring project

getting-started/build.gradle

getting-started/app/build.gradle

Giving birth to the first KT class

getting-started/app/src/…/MainActivity.java

getting-started/app/src/…/MainActivity.java

getting-started/app/src/…/MainActivity.kt

Introducing KotlinX

getting-started/app/…/res/layout/activity_main.xml

getting-started/app/src/…/MainActivity.kt

Lambdas first looking

getting-started/app/src/…/MainActivity.kt

getting-started/app/src/…/MainActivity.kt

:(

Extension functions

getting-started/app/src/…/extension/Toast.kt

getting-started/app/src/…/MainActivity.kt

:D

First class functions

getting-started/app/src/…/MainActivity.kt

Named parameters :D

getting-started/app/src/…/MainActivity.kt

Applying the knowledge

getting-started/app/src/…/UsersActivity.kt

getting-started/app/src/…/entity/User.kt

getting-started/app/src/…/UsersActivity.kt

getting-started/app/src/…/ui/adapter/UserListAdapter.kt

getting-started/app/src/…/res/layout/user_item.xml

getting-started/app/src/…/ui/adapter/UserListAdapter.kt

getting-started/app/src/…/ui/adapter/UserListAdapter.kt

getting-started/app/src/…/ui/adapter/UserListAdapter.kt

getting-started/app/src/…/UsersActivity.kt

Reference

• https://kotlinlang.org/

• Android Development with Kotlin — Jake Wharton

• http://antonioleiva.com/kotlin-android-developers/

• https://kotlinlang.slack.com/

https://github.com/lalbuquerque/getting-started-w-kotlin-android