转自：http://blog.csdn.net/maimiho/article/details/54976942

修改build.gradle(Module)文件

android {
    compileSdkVersion 25
    buildToolsVersion "25.0.2"
    defaultConfig {
        applicationId "com.maimiho.androidtest"
        minSdkVersion 15
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

        jackOptions {
            enabled true
        }
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {//指定java版本
        sourceCompatibility 1.8
        targetCompatibility 1.8
    }
}

增加的内容如下:

defaultConfig{
    jackOptions {
            enabled true
        }
}

compileOptions {//指定java版本
        sourceCompatibility 1.8
        targetCompatibility 1.8
    }

就可以支持Lambda表达式等特性了

button.setOnClickListener(v -> Toast.makeText(this, "click", Toast.LENGTH_SHORT).show());

20170211001921149.png