对媒体库的授权不运行处理程序

Question

    MPMediaLibrary.requestAuthorization { (status) in
       if status == MPMediaLibraryAuthorizationStatus.authorized  {
          print("Accepted")
       } else {
          print("not authorized")
       }
    }

在iOS 12.3.1更新之前，上面的代码运行得很好。但现在，闭包根本不会调用。有没有人遇到过这种情况，或者我遗漏了什么？

Answer 1

    MPMediaLibrary.requestAuthorization { (status) in
        if status == .authorized {
            print("Accepted")
        } else {
            print("not authorized")
        }
    }