Android Studio中使用Lambda表达式

Android Studio中使用Lambda表达式

1.再app下的build.gradle文件中添加如下2个东西

1. apply plugin: ‘me.tatarka.retrolambda’

2. 添加如下语句

compileOptions {

sourceCompatibility JavaVersion.VERSION_1_8

targetCompatibility JavaVersion.VERSION_1_8

}

这是添加过后的build.gradle文件

apply plugin: 'com.android.application'
apply plugin: 'me.tatarka.retrolambda'
android {
compileSdkVersion 23
buildToolsVersion "23.0.2"
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}

defaultConfig {
applicationId "com.ylq.rxjava"
minSdkVersion 16
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'io.reactivex:rxjava:1.1.1'
}

2.再project下的build.gradle文件中添加如下语句

1.classpath ‘me.tatarka:gradle-retrolambda:3.2.0’

这是添加过后的文件

buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.0.0-beta6'
classpath 'me.tatarka:gradle-retrolambda:3.2.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}

allprojects {
repositories {
jcenter()
}
}

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

只需经过这两步就可以再Android中使用Lambda表达式了