代码精简无疑是每个程序员的目标，简短易读。java 8中的lambda表达式的使用：
4 easy steps
- Download and install jdk8.
- Add the following to your project’s main build.gradle
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'me.tatarka:gradle-retrolambda:3.2.3'
}
}
3. Now add this to your application module’s build.gradle
apply plugin: 'com.android.application' // or apply plugin: 'java'
apply plugin: 'me.tatarka.retrolambda'
4. Add these lines to your application module’s build.gradle to inform the IDE of the language level:
android {
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
}
开始愉快的