Just copy and paste the below code
Pre-step before pasting the below code
Add below line in AppDelegate.swift file below import statement
let kAppDelegate = UIApplication.shared.delegate as! AppDelegate
import Foundation
import UIKit
import Contacts
class Permission {
static func askPermissionForEvent(authorised: (_ authorised: Bool) -> ()) {
let authorizationStatus = EKEventStore.authorizationStatus(for: .event);
switch authorizationStatus {
case .restricted:
openNotificationInSettings()
case .denied:
print("denied")
case .authorized:
authorised(true)
default:
authorised(true)
}
}
static func openNotificationInSettings() {
let alertController = UIAlertController(title: "Title", message: "Your message here", preferredStyle: .alert)
let settingsAction = UIAlertAction(title: "Settings", style: .default) { (_) -> Void in
guard let settingsUrl = URL(string: UIApplicationOpenSettingsURLString) else {
return
}
if UIApplication.shared.canOpenURL(settingsUrl) {
if #available(iOS 10.0, *) {
UIApplication.shared.open(settingsUrl, completionHandler: { (success) in
})
} else {
// Fallback on earlier versions
}
}
}
let cancelAction = UIAlertAction(title: "Cancel", style: .default, handler: nil)
alertController.addAction(cancelAction)
alertController.addAction(settingsAction)
DispatchQueue.main.async {
kAppDelegate.window?.rootViewController?.present(alertController, animated: true, completion: nil)
}
}
static func requestForContactAccess(completionHandler: @escaping (_ accessGranted: Bool) -> Void) {
let authorizationStatus = CNContactStore.authorizationStatus(for: CNEntityType.contacts)
switch authorizationStatus {
case .authorized:
completionHandler(true)
case .denied:
completionHandler(false)
self.openSettings()
case .notDetermined:
let store = CNContactStore()
store.requestAccess(for: CNEntityType.contacts, completionHandler: { (access, accessError) -> Void in
completionHandler(access)
print(accessError?.localizedDescription ?? "")
})
default:
completionHandler(false)
}
}
static func openSettings() {
let alertController = UIAlertController(title: "Title", message: "Your message here", preferredStyle: .alert)
let settingsAction = UIAlertAction(title: "Settings", style: .cancel) { (_) -> Void in
guard let settingsUrl = URL(string: UIApplicationOpenSettingsURLString) else {
return
}
if UIApplication.shared.canOpenURL(settingsUrl) {
if #available(iOS 10.0, *) {
UIApplication.shared.open(settingsUrl, completionHandler: { (success) in
})
} else {
// Fallback on earlier versions
}
}
}
let cancelAction = UIAlertAction(title: "Cancel", style: .default, handler: nil)
alertController.addAction(cancelAction)
alertController.addAction(settingsAction)
DispatchQueue.main.async {
kAppDelegate.window?.rootViewController?.present(alertController, animated: true, completion: nil)
}
}
}
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