Android 打包问题 'variantOutput.getPackageApplication()' is obsolete

修改如下面就可以了

applicationVariants.all { variant ->
    variant.outputs.each { output ->
        variant.packageApplicationProvider.get().outputDirectory = new File(project.rootDir.absolutePath + "/apk")

        def fileName
        if (output.name == 'debug') {
            fileName = "AppName-v${defaultConfig.versionName}-c${defaultConfig.versionCode}-test.apk"
        } else {
            fileName = "AppName-v${defaultConfig.versionName}-c${defaultConfig.versionCode}.apk"
        }
        output.outputFileName = fileName
    }
}