问题
I am scheduling new notifications in iOS10, like this:
func scheduleNotification (event : Meeting, todaysBadgeCounter: Int) {
if #available(iOS 10.0, *) {
let minutesBefore = 10
//interval in seconds from current point in time to notification
let interval : NSTimeInterval = NSTimeInterval(secondsFromNowTo(event.startTime.dateByAddingTimeInterval(-minutesBefore * 60)))
//only schedule in the future
if(interval > 0){
let category = NotificationsController.notificationCategory
let center = NotificationsController.notificationCenter
center.setNotificationCategories([category])
let content = UNMutableNotificationContent()
content.title = NSString.localizedUserNotificationStringForKey(event.title, arguments: nil)
if(minutesBefore <= 1){
content.body = NSString.localizedUserNotificationStringForKey("IOS10: Your \(event.title) is about to start", arguments: nil)
}else{
content.body = NSString.localizedUserNotificationStringForKey("IOS10: You have \(event.title) in \(Int(minutesBefore)) minutes", arguments: nil)
}
content.sound = UNNotificationSound.defaultSound()
let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: interval, repeats: false)
let identifier = NSString.localizedUserNotificationStringForKey("sampleRequest\(event.UUID)", arguments: nil)
let request = UNNotificationRequest.init(identifier: identifier, content: content, trigger: trigger)
//setting the delegate
center.delegate = self
center.addNotificationRequest(request, withCompletionHandler: { (error) in
// handle the error if needed
log.error(error?.localizedDescription)
print("SCHEDULING >=iOS10:", event.title, ", interval:", interval)
})
}
//return category
@available(iOS 10.0, *)
class var notificationCategory : UNNotificationCategory {
struct Static {
static let callNow = UNNotificationAction(identifier: NotificationActions.callNow.rawValue, title: "Call now", options: [])
static let clear = UNNotificationAction(identifier: NotificationActions.clear.rawValue, title: "Clear", options: [])
static let category : UNNotificationCategory = UNNotificationCategory.init(identifier: "CALLINNOTIFICATION", actions: [callNow, clear], intentIdentifiers: [], options: [])
}
return Static.category
}
I am able to schedule notifications, and receive local notifications at the right time. BUT: my delegate methods that I used according to the tutorial are never executed, however the didReceiveLocalNotification is executed each time I tap on the notification:
extension NotificationsController: UNUserNotificationCenterDelegate {
@available(iOS 10.0, *)
func userNotificationCenter(center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: () -> Void) {
print("IOS10 delivered")
// Response has actionIdentifier, userText, Notification (which has Request, which has Trigger and Content)
switch response.actionIdentifier {
case NotificationActions.NotifyBefore.rawValue:
print("notify")
break
case NotificationActions.callNow.rawValue:
print("callNow")
break
case NotificationActions.clear.rawValue:
print("clear")
default: break
}
}
@available(iOS 10.0, *)
func userNotificationCenter(center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void) {
// Delivers a notification to an app running in the foreground.
print("IOS10 delivered 2222")
}
}
Wasn't didReceiveLocalNotification deprecated? How to make these methods to be called?
UPDATE:
I updated my code with some suggestions from here, namely:
- I added assigning of the UNUserNotificationCenter.delegate to the applicationDidFinishLaunchingWithOptions.
- I also tried moving these methods (delegate methods) out of the extension to the NotificationsController.swift class, and setting this class as UNUserNotificationCenterDelegate. Did not work for me either.
回答1:
Request identifier is not the notification category.
Just add this line:
content.categoryIdentifier = identifier
Update: Just made a simple app. Everything seems to working fine:
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
UNUserNotificationCenter.current().delegate = self
UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge, .sound]) { (granted, error) in
if granted {
self.registerCategory()
self.scheduleNotification(event: "test", interval: 3)
self.scheduleNotification(event: "test2", interval: 5)
}
}
return true
}
func registerCategory() -> Void{
let callNow = UNNotificationAction(identifier: "call", title: "Call now", options: [])
let clear = UNNotificationAction(identifier: "clear", title: "Clear", options: [])
let category : UNNotificationCategory = UNNotificationCategory.init(identifier: "CALLINNOTIFICATION", actions: [callNow, clear], intentIdentifiers: [], options: [])
let center = UNUserNotificationCenter.current()
center.setNotificationCategories([category])
}
func scheduleNotification (event : String, interval: TimeInterval) {
let content = UNMutableNotificationContent()
content.title = event
content.body = "body"
content.categoryIdentifier = "CALLINNOTIFICATION"
let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: interval, repeats: false)
let identifier = "id_"+event
let request = UNNotificationRequest.init(identifier: identifier, content: content, trigger: trigger)
let center = UNUserNotificationCenter.current()
center.add(request, withCompletionHandler: { (error) in
})
}
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
print("didReceive")
completionHandler()
}
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
print("willPresent")
completionHandler([.badge, .alert, .sound])
}
}
Update 2: Rewritten in Swift 2.3
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {
var window: UIWindow?
func applicationDidFinishLaunching(application: UIApplication) {
UNUserNotificationCenter.currentNotificationCenter().delegate = self
UNUserNotificationCenter.currentNotificationCenter().requestAuthorizationWithOptions([.Badge, .Sound, .Alert]) { (granted, error) in
if granted {
self.registerCategory()
self.scheduleNotification("test", interval: 3)
self.scheduleNotification("test2", interval: 5)
}
}
}
func registerCategory() -> Void{
let callNow = UNNotificationAction(identifier: "call", title: "Call now", options: [])
let clear = UNNotificationAction(identifier: "clear", title: "Clear", options: [])
let category : UNNotificationCategory = UNNotificationCategory.init(identifier: "CALLINNOTIFICATION", actions: [callNow, clear], intentIdentifiers: [], options: [])
let center = UNUserNotificationCenter.currentNotificationCenter()
center.setNotificationCategories([category])
}
func scheduleNotification(event : String, interval: NSTimeInterval) {
let content = UNMutableNotificationContent()
content.title = event
content.body = "body"
content.categoryIdentifier = "CALLINNOTIFICATION"
let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: interval, repeats: false)
let identifier = "id_"+event
let request = UNNotificationRequest.init(identifier: identifier, content: content, trigger: trigger)
let center = UNUserNotificationCenter.currentNotificationCenter()
center.addNotificationRequest(request) { (error) in
}
}
func userNotificationCenter(center: UNUserNotificationCenter, willPresentNotification notification: UNNotification, withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void) {
print("willPresent")
completionHandler([.Badge, .Alert, .Sound])
}
func userNotificationCenter(center: UNUserNotificationCenter, didReceiveNotificationResponse response: UNNotificationResponse, withCompletionHandler completionHandler: () -> Void) {
print("didReceive")
completionHandler()
}
}
回答2:
Use belwo delegate method for Swift 2.3:
func userNotificationCenter(center: UNUserNotificationCenter, didReceiveNotificationResponse response: UNNotificationResponse, withCompletionHandler completionHandler: () -> Void)
回答3:
Make sure your AppDelegate implementing UNUserNotificationCenterDelegate protocol.
For Swift
let center = UNUserNotificationCenter.current()
center.delegate = self
For Objective-c
//set delegate to self
[[UNUserNotificationCenter currentNotificationCenter] setDelegate:self];
Assigning delegate to self will trigger following methods.
// App in foreground
private func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void) {
print("willPresent")
}
//On Action click
private func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: () -> Void) {
print("didReceive")
}
回答4:
I have found the answer for this. Below delegate method is called while running app on Xcode 8 with Swift 2.3 and minimum deployment target as iOS 9.3.
func userNotificationCenter(center: UNUserNotificationCenter, didReceiveNotificationResponse response: UNNotificationResponse, withCompletionHandler completionHandler: () -> Void)
In swift 3.0 Use,
func userNotificationCenter(_ center: UNUserNotificationCenter,
didReceive response: UNNotificationResponse,
withCompletionHandler completionHandler: @escaping () -> Void)
Reference: https://developer.apple.com/reference/usernotifications/unusernotificationcenterdelegate/1649501-usernotificationcenter
回答5:
According to the UNUserNotificationCenterDelegate docs:
Important
You must assign your delegate object to the UNUserNotificationCenter object no later before your app finishes launching. For example, in an iOS app, you must assign it in the applicationWillFinishLaunching(:) or applicationDidFinishLaunching(:) method.
So, it could be an issue of setting the Notification Centre delegate too late.
回答6:
For Swift 3.0
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
print("** willPresent")
completionHandler([.badge, .alert, .sound])
}
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
print("** didReceive")
completionHandler()
}
回答7:
You are using incorrect function signatures
The correct function signatures in swift are:
func userNotificationCenter(UNUserNotificationCenter, willPresent: UNNotification, withCompletionHandler: (UNNotificationPresentationOptions) -> Void) {
//your code here
}
and
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void) {
//your code here
}
回答8:
Check to make sure that only your AppDelegate is set as the UNUserNotificationCenter Delegate.
Are you using...
UNUserNotificationCenter.current().delegate = self
... more than once? I was trying to catch notifications with different outcomes in all of my view controllers by changing the delegate in each one and having each use this function:
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void) {
// code
}
The issue for me was that I hadn't implemented their functionality yet, and so the original userNotificationCenter function "didReceive" in my AppDelegate wasn't being called. This may be why yours isn't getting called.
回答9:
The docs says to set the delegate in applicationWillFinishLaunching(:) or applicationDidFinishLaunching(:). So include the following code in AppDelegate:
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
UNUserNotificationCenter.current().delegate = self
}
After this delegate is being set, the following willPresent function will be called.
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
print("willPresent")
completionHandler([.alert, .sound])
}
来源：https://stackoverflow.com/questions/38954496/unusernotificationcenter-did-receive-response-with-completion-handler-is-never-c