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| protocol PushHandler : class { | |
| func shouldDisplayNotification(for item: PushNotificationItem) -> Bool | |
| func handlePush(item: PushNotificationItem) | |
| } | |
| extension PushHandler { | |
| func handlePush(item: PushNotificationItem) {} | |
| func canHandlePush(item: PushNotificationItem) -> Bool { | |
| return false | |
| } | |
| } | |
| //Default implementation for controllers | |
| extension UIViewController: PushHandler { | |
| @objc func handlePush(item: PushNotificationItem) {} | |
| //By default the notification should always be displayed | |
| @objc func shouldDisplayNotification(for item: PushNotificationItem) -> Bool { | |
| return true | |
| } | |
| } | |
| extension UITabBarController { | |
| override func handlePush(item: PushNotificationItem) { | |
| for controller in self.viewControllers ?? [] { | |
| controller.handlePush(item: item) | |
| } | |
| } | |
| override func shouldDisplayNotification(for item: PushNotificationItem) -> Bool { | |
| for controller in self.viewControllers ?? [] { | |
| if controller.shouldDisplayNotification(for: item) == false { | |
| return false | |
| } | |
| } | |
| return true | |
| } | |
| } | |
| extension UINavigationController { | |
| override func handlePush(item: PushNotificationItem) { | |
| for controller in self.viewControllers { | |
| controller.handlePush(item: item) | |
| } | |
| } | |
| override func shouldDisplayNotification(for item: PushNotificationItem) -> Bool { | |
| for controller in self.viewControllers { | |
| if controller.shouldDisplayNotification(for: item) == false { | |
| return false | |
| } | |
| } | |
| return true | |
| } | |
| } | |
| //In the Appdelegate | |
| func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) { | |
| //parse the item | |
| if rootViewController.shouldDisplayNotification(for: notificationItem) { | |
| completionHandler([.alert, .badge]) | |
| }else { | |
| //silent push | |
| completionHandler([]) | |
| } | |
| } | |
| func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) { | |
| ...parse the item | |
| rootViewController.handlePush(item: notificationItem) | |
| } |
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