按照网上说的打包jar包成功了，可是混淆总是出错，具体代码如下
task make(type: ProGuardTask, dependsOn: "build") {
// 未混淆的jar
injars { 'build/intermediates/bundles/debug/' }
// 混淆后的jar路径
outjars 'mylibrary/build/http.jar'
// 具体需要keep住的类
configuration 'proguard-rules.pro'
}
每次都报错：
java.io.IOException: The input doesn't contain any classes. Did you specify the proper '-injars' options?
