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AndroidプロジェクトのKotlin化

Last updated at Posted at 2015-07-09

前置き

ただのメモ。
基本は、Kotlin のサイトの通り

Android Studio pluginをinstall

Android Studio > Preferences > Plugins > Browse Repository

browse_repository.png

下記2つをinstall

  • Kotlin
  • Kotlin Extensions for Android

kotlin_install.png

Android Studioは一度リスタートする

build.gradleの編集

buildscriptにclasspathの追加

build.gradle
buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.2.3'
        classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:0.12.613'
    }
}

pluginを適用

build.gradle
apply plugin: 'kotlin-android'

runtimeを追加

build.gradle
dependencies {
  compile 'org.jetbrains.kotlin:kotlin-stdlib:0.12.613'
}

.java => .kt ファイルへの変換

  • 対象のファイルを選ぶ
  • Cmd + Shift + A を押してクイックアクションを起動
  • convert files to kotlin と入力.
  • Enterでconvertできる

input_kotlin.png

build

./gradlew assembleDebug してみてビルドできれば成功。

途中で下記のような compileDebugKotlin ってタスクが挟まるっているはず。

:app:compileDebugKotlin UP-TO-DATE
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