ios - 获取uidocumentPickerController中的菜单选择事件

Question

我已经UIDocumentPickerViewController 在我的 class.implemented 委托方法中实现了。

我想知道我怎么知道documentPickerMenu我选择了哪个选项。我想在文档控制器的呈现菜单中实现 Dropbox 选择。我想从委托方法中知道它。

方法如下

func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentAt url: URL) {

    let cico = url as URL
    print("The Url is : \(cico)")
}

func documentMenu(_ documentMenu: UIDocumentMenuViewController, didPickDocumentPicker documentPicker: UIDocumentPickerViewController) {

    documentPicker.delegate = self
    print(documentMenu.accessibilityLabel ?? "Menu")
    present(documentPicker, animated: true, completion: nil)

}

func documentMenuWasCancelled(_ documentMenu: UIDocumentMenuViewController) {

    print("we cancelled")
    dismiss(animated: true, completion: nil)
}

如果有人可以帮助我提前谢谢。