[Gradle Retrolambda]Android Studio使用lambda表达式

1.下载jdk8

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

apply plugin: 'me.tatarka.retrolambda'

android {

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

retrolambda {
javaVersion JavaVersion.VERSION_1_7
}

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
}
}