Gradle插件开发 如何配置成Java1.7版本

Question

开发Gradle插件时报下面的错误

Cause: Dex cannot parse version 52 byte code.
This is caused by library dependencies that have been compiled using Java 8 or above.
If you are using the 'java' gradle plugin in a library submodule add 
targetCompatibility = '1.7'
sourceCompatibility = '1.7'

targetCompatibility = '1.7' 这个要怎么添加

尝试了以下两种方法都无效

apply plugin: 'groovy'

repositories {
    jcenter()
}

compileGroovy {
    sourceCompatibility = 1.7
    targetCompatibility = 1.7
}


dependencies {
    compile gradleApi()//gradle sdk
    compile localGroovy()//groovy sdk
}

apply plugin: 'groovy'

repositories {
    jcenter()
}

tasks.withType(GroovyCompile) {
    sourceCompatibility = '1.7'
    targetCompatibility = '1.7'
}

dependencies {
    compile gradleApi()//gradle sdk
    compile localGroovy()//groovy sdk
}

  想要把AndroidStudio的JDK版本改为1.7也无法设置

这种情况应该如何处理？

Answer 1

加在最外层