[Gradle Retrolambda]Android Studio使用lambda表达式

1.下载jdk8

http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

2.配置Project: build.gradle

buildscript {
    repositories {
        mavenLocal()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.5.0'
        classpath 'me.tatarka:gradle-retrolambda:3.2.5'
    }
}

allprojects {
    repositories {
        jcenter()
    }
}
task clean(type: Delete) {
    delete rootProject.buildDir
}

3. 配置Module:app -> build.gradle文件

添加apply plugin：

apply plugin: 'me.tatarka.retrolambda'

在android 节点下增加compileOptions：

android {

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

在android 节点下增加retrolambda ：

retrolambda {
        javaVersion JavaVersion.VERSION_1_7
    }

这是我的添加：

apply plugin: 'com.android.application'
apply plugin: 'me.tatarka.retrolambda'
android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"


    defaultConfig {
        applicationId "com.dalinbobo.lapa"
        minSdkVersion 14
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    retrolambda {
        javaVersion JavaVersion.VERSION_1_7
    }
}

最后就可以使用lambda表达式了。