Getting started with Kotlin and Android

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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

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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

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Conﬁguring the IDE / Plugin

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

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Creating and conﬁguring project

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getting-started/build.gradle

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getting-started/app/build.gradle

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Giving birth to the ﬁrst KT class

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

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

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

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Introducing KotlinX

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

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

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Lambdas ﬁrst looking

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

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

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Extension functions

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

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

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First class functions

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getting-started/app/src/…/MainActivity.kt Named parameters :D

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

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Applying the knowledge

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

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

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

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

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

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

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

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

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

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Reference • https://kotlinlang.org/ • Android Development with Kotlin — Jake Wharton • http://antonioleiva.com/kotlin-android-developers/ • https://kotlinlang.slack.com/

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