I want to perform some calculations when the user dismisses a notification.
This works as expected when dismissing a single notification. But I can’t get it to work when dismissing a stack of notifications with “Clear All”.
For this purpose I created an UNNotificationCategory with option .customDismissAction,
extension UNNotificationCategory {
static let CUSTOM_CATEGORY_IDENTIFIER: String = "CUSTOM_CATEGORY_IDENTIFIER"
static let customCategory: UNNotificationCategory =
.init(identifier: CUSTOM_CATEGORY_IDENTIFIER, actions: [], intentIdentifiers: [],
options: .customDismissAction
)
}
registered my category with UNNotificationCenter.current().setNotificationCategories()
class AppDelegate: NSObject, UNUserNotificationCenterDelegate {
public func application(_: UIApplication, didFinishLaunchingWithOptions _: [UIApplication.LaunchOptionsKey: Any]?) {
// ...
UNUserNotificationCenter.current().delegate = self
UNUserNotificationCenter.current()
.setNotificationCategories([UNNotificationCategory.customCategory])
// ...
}
}
and for each new UNNotificationRequest I set the content.categoryIdentifier accordingly.
func notificationRequest(title: String, body: String) -> UNNotificationRequest {
let identifier = UUID().uuidString
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 60, repeats: true)
let content = UNMutableNotificationContent()
content.title = title
content.body = body
content.categoryIdentifier = UNNotificationCategory.CUSTOM_CATEGORY_IDENTIFIER
return UNNotificationRequest(identifier: identifier, content: content, trigger: trigger)
}
On dismissing a single notification everything works as expected.
The userNotificationCenter(_: UNNotificationCenter, didReceive response: ..) delegate method is called, the response.actionIdentifier is UNNotificationDismissActionIdentifier as expected and my code is performed.
public func userNotificationCenter(_: UNUserNotificationCenter,
didReceive response: UNNotificationResponse,
withCompletionHandler completionHandler: @escaping () -> Void) {
switch response.actionIdentifier {
case UNNotificationDismissActionIdentifier:
print("handle dismiss notification")
case UNNotificationDefaultActionIdentifier:
print("handle dismiss notification")
case let identifier:
print("didReceive notificationResponse with identifier: \(identifier)")
}
completionHandler()
}
But when multiple stacked notifications are dismissed all at once via swipe, “Clear All” action or “X” button, the delegate isn’t called even once.
Is there any way I can be notified in this case?
(doesn’t matter if dismissing a stack of x notifications would trigger the delegate once or x times)
