EKEventViewController不会在iOS 13上显示“编辑按钮”

Question

我有一个简单的应用，我想在EKEventViewController中呈现一个事件。

    // the button action which validates if the event store access is granted and presents the given alert if true
    @IBAction func actionButtonShowPopover(_ sender: Any) {
        eventStore.requestAccess(to: .event) { (granted, _) in
            guard granted else { return }

            let event = self.generateAndSaveEvent()
            self.presentEventViewController(withEvent: event)
        }
    }

    // creates and tries to save an sample even and returns it
    private func generateAndSaveEvent() -> EKEvent {
        let event = EKEvent(eventStore: eventStore)

        event.title = "Event Title"
        event.startDate = Date()
        event.endDate = Date().addingTimeInterval(1800)
        event.calendar = eventStore.defaultCalendarForNewEvents

        do {
            try eventStore.save(event, span: .thisEvent)
        } catch(let error) {
            print(error)
        }

        return event
    }

    // displays an EKEventViewController with our newly created event within an popover
    private func presentEventViewController(withEvent event: EKEvent) {
        DispatchQueue.main.async {
            let eventVC = EKEventViewController()

            eventVC.event = event
            eventVC.allowsEditing = true

            eventVC.modalPresentationStyle = .popover
            eventVC.popoverPresentationController?.sourceView = self.buttonShowPopover
            eventVC.popoverPresentationController?.sourceRect = self.buttonShowPopover.frame.offsetBy(dx: 0, dy: -10)
            eventVC.popoverPresentationController?.backgroundColor = .white
            eventVC.popoverPresentationController?.permittedArrowDirections = .up

            self.present(eventVC, animated: false, completion: nil)
        }
    }

i创建了一个事件，如上面的代码所示，并将其简单地显示在弹出视图控制器中。由于ios 13我得到了不同的结果：

iOS 12.4 with edit button

iOS 13 without edit button

我是否有可能错过iOS12-> iOS13的更改？预先感谢-我非常感谢您提供任何建议！

Answer 1

[编辑按钮已移至iOS 13中的导航栏。您需要以没有弹出样式的方式显示它。