Can not set the value of read-only property 'jniFolders' for task ': android: packageDebug

Error: Can not set the value of read-only property 'jniFolders' for task ': android: packageDebug' of type com.android.build.gradle.tasks.PackageApplication.

由于还不甚了解AS的工程配置，网上扒了很久才在这里找到答案：https://androidforums.com/threads/android-studio-problem-gradle-project-sync-failed.1114629/

我说一下，注意事项，要完全注释掉：

//    tasks.withType(PackageApplication) {//        pkgTask ->//            //pkgTask.jniFolders = [new File(buildDir, 'native-libs')];//            pkgTask.jniFolders = new HashSet<File>()//            pkgTask.jniFolders.add(new File(buildDir, 'libs'))//    }

再添加上：

sourceSets {    main {        jniLibs.srcDir 'libs'    }}