Android Studio如何导出jar包

Android Studio的Library项目一般默认是生成aar文件，如何生成jar文件，其实也不难

两步完成

1 在build.gradle中加入以下代码

// This is the actual solution, as in http://stackoverflow.com/a/19037807/1002054
task clearJar(type: Delete) {
    delete 'build/libs/myCompiledLibrary.jar'
}

task makeJar(type: Copy) {
    from('build/intermediates/bundles/release/')
    into('build/libs/')
    include('classes.jar')
    rename ('classes.jar', 'myCompiledLibrary.jar')
}

makeJar.dependsOn(clearJar, build)

注意:classes.jar文件的路径不一定是'build/intermediates/bundles/release/'，这个根据实际情况来修改

2 在Android Studio的Terminal中运行gradlew makeJar