Android Studio 出现 lande expression are not supported at this language level 的解决方案

（1）project –gradle中

buildscript {

repositories {

jcenter()

mavenCentral()//可有可无

}

dependencies {

classpath ‘me.tatarka:gradle-retrolambda:3.7.0’

}

}

（2）project –gradle中：allprojects 是与buildscript 在同一个级别下的

allprojects {

repositories {

jcenter()

apply plugin: ‘me.tatarka.retrolambda’

}

}

（3）modle—gradle中:

apply plugin: ‘me.tatarka.retrolambda’

(4)modle—gradle中:

android {

defaultConfig {

compileOptions {

sourceCompatibility JavaVersion.VERSION_1_8

targetCompatibility JavaVersion.VERSION_1_8

}

}

}