https://github.com/gfx/lambdaandroid

https://github.com/gfx/lambdaandroid

Last synced: 26 days ago
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• Host: GitHub
• URL: https://github.com/gfx/lambdaandroid
• Owner: gfx
• Created: 2014-03-19T02:22:36.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2014-03-19T02:25:07.000Z (over 10 years ago)
• Last Synced: 2023-04-09T21:19:20.024Z (over 1 year ago)
• Language: Shell
• Size: 254 KB
• Stars: 9
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
## LetroLambda works on Android!

祝！Java8 release（2014/3/18）！lambda式バンザイ！

lambda式はcallback styleのAPIと非常に相性がいいので、これからのMBaaS SDK設計は大きく変わるはず。

[@zaki50: retrolambda https://github.com/evant/gradle-retrolambda … 組み込んだ gradle のプロジェクトにしたら Android で lambda 使えた！ https://gist.github.com/zaki50/c16db7cb29cee0a5e364 … ](https://twitter.com/zaki50/status/445569652941258752)

https://github.com/evant/gradle-retrolambda

というわけで、retrolambdaを使ってAndroidでλ式を使ってみました。

`app/build.gradle` をちょろっと設定するだけで…

```groovy

buildscript {

    repositories {

        mavenCentral()

    }

    dependencies {

        classpath 'me.tatarka:gradle-retrolambda:1.3.0'

    }

}

apply plugin: 'android'

apply plugin: 'retrolambda'

retrolambda {

    jdk "/Library/Java/JavaVirtualMachines/jdk1.8.0.jdk/Contents/Home"

}

android {

	...

    compileOptions {

        sourceCompatibility JavaVersion.VERSION_1_8

        targetCompatibility JavaVersion.VERSION_1_8

    }

	...

}

```

`minSdkVersion 8` でも lambda式が使える！YATTA！

```java

findViewById(R.id.hello).setOnClickListener((view) -> {

	Toast.makeText(getApplication(), "Yeah!", Toast.LENGTH_LONG).show();

});

```