Hi, i am using the latest CK Version. When i start my app the first time, i granted the permission to access my calendar. But after that, CalendarKit is not able to display events. I try to call reloadData() in requestAccessToCalendar() but with now success.

What do i need to change to display events after request access without starting the app again?

when press on event I got nil as he can't cast from EventDescriptor to EkWrapper any help please ` // // CalendarViewController.swift // Servbud provider // // Created by Khaled on 22/12/2021. // Copyright © 2021 ORGANIZATIONNAME. All rights reserved. //

import UIKit import CalendarKit import EventKit import EventKitUI import LKAlertController

protocol CalendarDisplayLogic: AnyObject { func displayAvailableTimes(times: [[MainNetworkModels.AvailableTimes]]) func displayError(errorMessage: String) func displayUnAuthorized() }

class CalendarViewController: DayViewController, CalendarDisplayLogic, EKEventEditViewDelegate {

// MARK: - Properties

typealias Models = CalendarModels
var router: (NSObjectProtocol & CalendarRoutingLogic & CalendarDataPassing)?
var interactor: CalendarBusinessLogic?
private var eventStore =  EKEventStore()
let apiDate = DateFormatter()
let currentDate = Calendar.current.dateComponents([.year, .month], from: Date())
var currentmonth = Calendar.current.dateComponents([.year, .month], from: Date()).month
var allTimes: [MainNetworkModels.AvailableTimes] = []
var events = [Event]()

// MARK: - Object lifecycle

override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
    super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
    setup()
}

required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
    setup()
}

// MARK: - Setup

private func setup() {
    let viewController = self
    let interactor = CalendarInteractor()
    let presenter = CalendarPresenter()
    let router = CalendarRouter()

    viewController.router = router
    viewController.interactor = interactor
    interactor.presenter = presenter
    presenter.viewController = viewController
    router.viewController = viewController
}

// MARK: - View Lifecycle

override func viewDidLoad() {
    super.viewDidLoad()
    apiDate.dateFormat = "yyyy-MM-dd HH:mm:ss"
}

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    setupUI()
    requestAccessToCalendar()
    view.showActivityView()
    interactor?.getAvailableTimes(month: String(currentDate.month ?? 1), year: String(currentDate.year ?? 2022))
}

override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)
    events.removeAll()
    allTimes.removeAll()
}

func setupUI(){
    title = "My Calender"
}

private func requestAccessToCalendar() {
    // Request access to the events
    eventStore.requestAccess(to: .event) { [weak self] granted, error in
        // Handle the response to the request.
        DispatchQueue.main.async {
            guard let self = self else { return }
            self.initializeStore()
            self.reloadData()
        }
    }
}

private func initializeStore() {
    eventStore = EKEventStore()
}

override func eventsForDate(_ date: Date) -> [EventDescriptor] {
    events.removeAll()
    allTimes.forEach { time in
        let fromStringString = (time.from?.date ?? "") + " " + (time.from?.time ?? "")
        let toStringString = (time.to?.date ?? "") + " " + (time.to?.time ?? "")
        let newEvent = Event()
        newEvent.dateInterval = DateInterval(start: apiDate.date(from: fromStringString) ?? Date(), end: apiDate.date(from: toStringString) ?? Date())
        newEvent.isAllDay = false
        newEvent.color = .random
        newEvent.backgroundColor = .random
        newEvent.text = "Avabilty \n from: " + (time.from?.time ?? "") + "to: " + (time.to?.time ?? "")
        newEvent.textColor = .white
        events.append(newEvent)
    }
    return events
}

// MARK: - DayViewDelegate

// MARK: Event Selection

override func dayViewDidSelectEventView(_ eventView: EventView) {
    guard let ckEvent = eventView.descriptor as? EKWrapper else {
        return
    }
    presentDetailViewForEvent(ckEvent.ekEvent)
}

private func presentDetailViewForEvent(_ ekEvent: EKEvent) {
    let eventController = EKEventViewController()
    eventController.event = ekEvent
    eventController.allowsCalendarPreview = true
    eventController.allowsEditing = true
    navigationController?.pushViewController(eventController,
                                             animated: true)
}

// MARK: Event Editing

override func dayView(dayView: DayView, didLongPressTimelineAt date: Date) {
    // Cancel editing current event and start creating a new one
    endEventEditing()
    let newEKWrapper = createNewEvent(at: date)
    create(event: newEKWrapper, animated: true)
}

private func createNewEvent(at date: Date, to endDate: Date) -> EKWrapper {
    let newEKEvent = EKEvent(eventStore: eventStore)
    newEKEvent.calendar = eventStore.defaultCalendarForNewEvents
    newEKEvent.startDate = date
    newEKEvent.endDate = endDate
    newEKEvent.title = "Availabilty"
    let newEKWrapper = EKWrapper(eventKitEvent: newEKEvent)
    newEKWrapper.editedEvent = newEKWrapper
    return newEKWrapper
}

private func createNewEvent(at date: Date) -> EKWrapper {
    let newEKEvent = EKEvent(eventStore: eventStore)
    newEKEvent.calendar = eventStore.defaultCalendarForNewEvents
    
    var components = DateComponents()
    components.hour = 1
    let endDate = calendar.date(byAdding: components, to: date)
    
    newEKEvent.startDate = date
    newEKEvent.endDate = endDate
    newEKEvent.title = "Availabilty"
    
    let newEKWrapper = EKWrapper(eventKitEvent: newEKEvent)
    newEKWrapper.editedEvent = newEKWrapper
    return newEKWrapper
}

override func dayViewDidLongPressEventView(_ eventView: EventView) {
    guard let descriptor = eventView.descriptor as? EKWrapper else {
        return
    }
    endEventEditing()
    beginEditing(event: descriptor, animated: true)
}

override func dayView(dayView: DayView, didUpdate event: EventDescriptor) {
    guard let editingEvent = event as? EKWrapper else { return }
    if let originalEvent = event.editedEvent {
        editingEvent.commitEditing()
        
        if originalEvent === editingEvent {
            presentEditingViewForEvent(editingEvent.ekEvent)
        } else {
            
        }
    }
    events.removeAll()
    reloadData()
}


private func presentEditingViewForEvent(_ ekEvent: EKEvent) {
    let eventEditViewController = EKEventEditViewController()
    eventEditViewController.event = ekEvent
    eventEditViewController.eventStore = eventStore
    eventEditViewController.editViewDelegate = self
    present(eventEditViewController, animated: true, completion: nil)
}

override func dayView(dayView: DayView, didTapTimelineAt date: Date) {
    endEventEditing()
}

override func dayViewDidBeginDragging(dayView: DayView) {
    endEventEditing()
}

// MARK: - EKEventEditViewDelegate

func eventEditViewController(_ controller: EKEventEditViewController, didCompleteWith action: EKEventEditViewAction) {
    endEventEditing()
    events.removeAll()
    reloadData()
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "yyyy-MM-dd"
    let startDate = dateFormatter.string(from: controller.event?.startDate ?? Date())
    dateFormatter.dateFormat = "HH:mm"
    let startTime = dateFormatter.string(from: controller.event?.startDate ?? Date())
    let endTime = dateFormatter.string(from: controller.event?.endDate ?? Date())
    let sameEventsDay = allTimes.filter { event in
        return event.from?.date == startDate
    }
    var availableTimes = sameEventsDay.map { event -> CalendarModels.availabelTimes in
        let eventFormatter = DateFormatter()
        eventFormatter.dateFormat = "HH:mm:ss"
        let from = dateFormatter.string(from: eventFormatter.date(from: event.from?.time ?? "") ?? Date())
        let to = dateFormatter.string(from: eventFormatter.date(from: event.to?.time ?? "") ?? Date())
        return CalendarModels.availabelTimes(date: event.from?.date, from: from, to: to)
    }
    view.showActivityView()
    if action.rawValue == 1 {
        availableTimes.append(CalendarModels.availabelTimes(date: startDate, from: startTime, to: endTime))
    }
    interactor?.setAvailableTimes(availableTime: availableTimes)
    controller.dismiss(animated: true, completion: nil)
}

func displayAvailableTimes(times: [[MainNetworkModels.AvailableTimes]]){
    view.hideActivityView()
    allTimes.removeAll()
    times.forEach { item in
        allTimes.append(contentsOf: item)
    }
    events.removeAll()
    reloadData()
}

func displayError(errorMessage: String) {
    view.hideActivityView()
    showAlert(errorMessage: errorMessage, completion: nil)
}

func showAlert(errorMessage: String, completion: (( _ choose: Bool) -> Void)?){
    Alert(title: "error", message: errorMessage)
        .addAction("ok", style: .default) { _ in
            completion?(true)
        }
        .show()
}

func displayUnAuthorized(){
    SharedPrefrences.shared.deconnectUSer()
    router?.goToLogin()
}

override func dayView(dayView: DayView, willMoveTo date: Date){
    let calendarDate = Calendar.current.dateComponents([.year, .month], from: date)
    if (calendarDate.month != currentmonth) {
        events.removeAll()
        allTimes.removeAll()
        view.showActivityView()
        interactor?.getAvailableTimes(month: String(calendarDate.month ?? 1), year: String(calendarDate.year ?? 2022))
        currentmonth = calendarDate.month
    }
}

}

`

When I was compiling this project, it said "Cannot find 'ekEvent' in scope" The error happened in the line 74 of the "CalenderViewController". How can I fix the problems about the event kit. Please help me out. Thank you very much.

Hi @richardtop I found a bug (maybe not) when I add invitee from ios calendar and go to calenderkit view and click that event app directly crashes or when I click add invitee in the app in calender kit view it directly crashes. Is there a way to solve it or a way to remove that section that says add invitee? Even I remove the add invitee in the calender kit view if a user has added an invitee from ios calender it will keep crushing. do you have a solution for that? Any document or walktrough video smth?

` import UIKit import CalendarKit import EventKit import EventKitUI import Firebase import FirebaseAuth

class BsCalendarViewController: DayViewController, EKEventEditViewDelegate {

private let eventStore =  EKEventStore()

let db = Firestore.firestore()
let currentUserMail = Auth.auth().currentUser?.email
var xx = ""

override func viewDidLoad() {
    super.viewDidLoad()
    requestAccessToCalendar()
    subscribeToNotifications()
    getCurrentUserData()
    
    DispatchQueue.main.asyncAfter(deadline: .now() + 1.0, execute: self.uploadCurrentUserCalendar)
    
    let appearance = UINavigationBarAppearance()
    appearance.configureWithTransparentBackground()
    appearance.shadowColor = nil
    
    let navigationBar = navigationController!.navigationBar
    navigationBar.standardAppearance = appearance
    navigationBar.scrollEdgeAppearance = appearance
    
    self.navigationController?.setToolbarHidden(true, animated: false)

}

func getCurrentUserData() {
    
    db.collection("xx").document(xx!).getDocument { (document, error) in
        
        if let document = document, document.exists {
               let dataDescription = document.data()
            guard let type = dataDescription?["x x"] else {return}
            self.xx = type as! String
           } else {
               print("Document does not exist")
           }
    }
}

var eventBox: [EventBox] = []

func uploadCurrentUserCalendar() {
    
    self.db.collection(xx).document(xx!).collection("Calendar").getDocuments() { (querySnapshot, err) in
        if let err = err {
            let alert = UIAlertController(title: "Upload Error", message: err.localizedDescription, preferredStyle: UIAlertController.Style.alert)
            alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
            self.present(alert, animated: true, completion: nil)
            return
        } else {
            for document in querySnapshot!.documents {
                document.reference.delete()
            }
            let startDate = Calendar.current.date(byAdding: .day, value: -7, to: Date())
            
            var oneDayComponents = DateComponents()
            oneDayComponents.day = 35
            let endDate = self.calendar.date(byAdding: oneDayComponents, to: startDate!)!
            let predicate = self.eventStore.predicateForEvents(withStart: startDate!, end: endDate, calendars: nil)
            let eventKitEvents = self.eventStore.events(matching: predicate)
        
            for event in eventKitEvents {
               if let startDate = event.startDate,
                  let endDate = event.endDate,
                  let isAllDay = event.isAllDay as? Bool,
                  let title = event.title{
                   let newEventBox = EventBox(startDate: startDate, endDate: endDate, isAllDay: isAllDay, title: title)
                   self.eventBox.append(newEventBox)

               }
            }
            for uploadData in self.eventBox {
                self.db.collection(x.xx).document(x.xx!).collection("Calendar").document(uploadData.title).setData([ "title" : uploadData.title, "startDate" : uploadData.startDate, "endDate" : uploadData.endDate, "isAllDay" : uploadData.isAllDay])
            }
        }
    }
    

}


override func viewWillDisappear(_ animated: Bool) {
    self.navigationController?.setToolbarHidden(true, animated: false)

}
override func viewWillAppear(_ animated: Bool) {
    self.navigationController?.setToolbarHidden(true, animated: false)

}

func subscribeToNotifications() {
    NotificationCenter.default.addObserver(self, selector: #selector(storeChanged(_:)), name: .EKEventStoreChanged, object: nil)
}

@objc func storeChanged(_ notification: Notification) {
    reloadData()
    uploadCurrentUserCalendar()
}


func requestAccessToCalendar() {
    
    eventStore.requestAccess(to: .event) { success, error in
        
    }
}


override func eventsForDate(_ date: Date) -> [EventDescriptor] {
    
    let startDate = date
   
    var oneDayComponents = DateComponents()
    oneDayComponents.day = 1
   
    let endDate = calendar.date(byAdding: oneDayComponents, to: startDate)!
   
    let predicate = eventStore.predicateForEvents(withStart: startDate, end: endDate, calendars: nil)
   
    let eventKitEvents = eventStore.events(matching: predicate)
    let calenderKitEvents = eventKitEvents.map(EKWrapper.init)

    return calenderKitEvents
}

override func dayViewDidSelectEventView(_ eventView: EventView) {
    
    guard let ckEvent = eventView.descriptor as? EKWrapper else {
        return
    }
    
    let ekEvent = ckEvent.ekEvent
    presentDetailView(ekEvent)
}

private func presentDetailView(_ ekEvent: EKEvent) {
    
    let eventViewController = EKEventViewController()
    eventViewController.event = ekEvent
    eventViewController.allowsCalendarPreview = true
    eventViewController.allowsEditing = true
    navigationController?.pushViewController(eventViewController, animated: true)
}

override func dayViewDidLongPressEventView(_ eventView: EventView) {
    endEventEditing()
    guard let ckEvent = eventView.descriptor as? EKWrapper else { return }
    
    beginEditing(event: ckEvent, animated: true)
}


override func dayView(dayView: DayView, didUpdate event: EventDescriptor) {
    guard let editingEvent = event as? EKWrapper else { return }
    if let originalEvent = event.editedEvent {
        editingEvent.commitEditing()
        
        if originalEvent === editingEvent {
            // event creation flow
            presentEditingViewForEvent(editingEvent.ekEvent)
        } else {
            // editing flow
            try! eventStore.save(editingEvent.ekEvent, span: .thisEvent)
        }
        
        
    }
    reloadData()
}

func presentEditingViewForEvent(_ ekEvent: EKEvent) {
    let editingViewController = EKEventEditViewController()
    editingViewController.editViewDelegate = self
    editingViewController.event = ekEvent
    editingViewController.eventStore = eventStore
    present(editingViewController, animated: true, completion: nil)
}

override func dayView(dayView: DayView, didTapTimelineAt date: Date) {
    endEventEditing()
}

override func dayViewDidBeginDragging(dayView: DayView) {
    endEventEditing()
}

override func dayView(dayView: DayView, didLongPressTimelineAt date: Date) {
    let newEKEvent = EKEvent(eventStore: eventStore)
    newEKEvent.calendar = eventStore.defaultCalendarForNewEvents
    
    var oneHourComponents = DateComponents()
    oneHourComponents.hour = 1
    
    let endDate = calendar.date(byAdding: oneHourComponents, to: date)
    
    newEKEvent.startDate = date
    newEKEvent.endDate = endDate
    newEKEvent.title = "New Event"
    
    let newEKWrapper = EKWrapper(eventKitEvent: newEKEvent)
    newEKWrapper.editedEvent = newEKWrapper
    
    create(event: newEKWrapper, animated: true)
}

func eventEditViewController(_ controller: EKEventEditViewController, didCompleteWith action: EKEventEditViewAction) {
    endEventEditing()
    reloadData()
    controller.dismiss(animated: true, completion: nil)
}

}`

https://user-images.githubusercontent.com/109156022/185787187-5a07a2dd-298c-4de1-a739-4c36e7d389cb.MP4