如何从UIActivityViewController中排除动作活动？

Question

我正在使用UIActivityViewController将邀请文本分享到我的应用。我试图排除除Notes App之外的所有活动。我无法排除＆＃34;保存到文件＆＃34;选项。

1. 有没有办法直接用动作活动排除视图？

2. 如何排除＆＃34;保存到文件＆＃34;活动选项？

   @IBAction func inviteAction(_ sender: UIBarButtonItem) {
   let inviteText = "..."
   let actCont = UIActivityViewController(activityItems: [inviteText], applicationActivities: [])
   //Exclude action activities types from the list
   actCont.excludedActivityTypes = [ .print, .assignToContact, .saveToCameraRoll, .copyToPasteboard,
                                     .addToReadingList,
                                     UIActivityType(rawValue: "com.apple.mobilenotes.SharingExtension"),
                                     UIActivityType(rawValue: "com.apple.CloudDocsUI.AddToiCloudDrive")]
   self.present(actCont, animated: true, completion: nil)
   }