I'm doing an app that schedules local notifications and saves an userInfo. That's part its ok.
But when the app is closed, if a Notification appears and the user clicks, the method is not called and I can't handle userInfo.
I saw that there's a new way to receive a notification with UNUserNotificationCenter. But is not working too.
I've tried it that way, but I did not succeed:
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: #escaping () -> Void) {
let userInfo = response.notification.request.content.userInfo
if let yourData = userInfo["yourKey"] as? String {
// Handle your data here, pass it to a view controller etc.
}
}
That's my implementation in AppDelegate:
#available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: #escaping () -> Void) {
let lNotification = UILocalNotification()
lNotification.userInfo = response.notification.request.content.userInfo
// Handle your data here, pass it to a view controller etc.
}
Anyone, to help me? I saw all the questions related here and didn't found anything.
Have you registered for notifications?
If not, add this to AppDelegate didFinishLaunchingWithOptions:
// Register Notifications
UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge], completionHandler: { granted, error in
if granted {
print("User notifications are allowed")
} else {
print("User notifications are NOT allowed")
}
})
UNUserNotificationCenter.current().delegate = self
Related
I want to have an onboarding viewcontroller, where the user can click a button "allow notifications" and then the request alert for push notifications show up.
I have done so:
OnboardingViewController
onboardingViewController: UIViewController, UNUserNotificationCenterDelegate
func registerForRemoteNotification() {
let center = UNUserNotificationCenter.current()
center.requestAuthorization(options: [.sound, .alert, .badge]) { (granted, error) in
if error == nil && granted {
print("Brugeren har accepteret notifikationer")
DispatchQueue.main.async {
UNUserNotificationCenter.current().delegate = self
UIApplication.shared.registerForRemoteNotifications()
}
}
}
}
The issue is that this function in AppDelegate is not called, when I do it like the above example:
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: #escaping () -> Void) {
print("Test 1")
completionHandler()
}
The "didReceive" function will only be called, if I put the requestAuthorization code inside the AppDelegate file, inside didFinishLaunchingWithOptions.
How do you guys fix this issue?
I am using didReceiveRemoteNotification for detecting the app notification. But it is is getting fired automatically, when the app is at running state. I need the notification selection get detected when the app is at running state, rather than automatic notification detection through didReceiveRemoteNotification. Thanks in Advance
iOS 10+ provide the custom local notification for handling this type of issue when the app is running in the foreground.
In didFinishLaunchingWithOptions, add the delegate
UNUserNotificationCenter.current().delegate = self
then create an appDelegate extension and add this.
#available(iOS 10, *)
extension AppDelegate : UNUserNotificationCenterDelegate {
// Receive displayed notifications for iOS 10 devices.
func userNotificationCenter(_ center: UNUserNotificationCenter,
willPresent notification: UNNotification,
withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void) {
let userInfo = notification.request.content.userInfo
// Print full message.
print(userInfo)
// Change this to your preferred presentation option
completionHandler([.alert,.sound])
}
func userNotificationCenter(_ center: UNUserNotificationCenter,
didReceive response: UNNotificationResponse,
withCompletionHandler completionHandler: #escaping () -> Void) {
let userInfo = response.notification.request.content.userInfo
// Print full message.
print("tap on on forground app",userInfo)
completionHandler()
}
}
For details:
Read This Tutorial
I am trying to show the Banner notification when the app is active.
I used given method but there is no result , Banner notification are appearing only when the app is closed :
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any]) {
print("Push notification received: \(userInfo)")
if application.applicationState == .active {
print("active")
let localNotification = UILocalNotification()
localNotification.userInfo = userInfo
localNotification.alertAction = "Test"
localNotification.soundName = UILocalNotificationDefaultSoundName
localNotification.alertBody = "Notification test!!"
localNotification.fireDate = Date()
UIApplication.shared.scheduleLocalNotification(localNotification)
}
}
It prints "active" but the notification is not showing. Am i missing any step ?
Thank you.
If the application is running in the foreground, iOS won't show a notification banner/alert. You have to write some code to deal with the situation of your app receiving a notification while it is in the foreground.
Or you can use popular Third party library : github.com/bryx-inc/BRYXBanner
Use it like below
import BRYXBanner // import in your class
// Put this code where you are getting notification
let banner = Banner(title: "title", subtitle: "subtitle", image: UIImage(named: "addContact"), backgroundColor: UIColor(red:137.0/255.0, green:172.0/255.0, blue:2.0/255.0, alpha:1.000))
banner.dismissesOnTap = true
banner.show(duration: 1.0)
But if You are using iOS 10.0+ then you can approach goal for displaying banner message while app is in foreground, use the following method.
// This method will be called when app received push notifications in foreground for iOS 10+
#available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void) {
completionHandler([.alert, .badge, .sound])
}
To show notification in foreground. you need to write delegate methods\
#available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: #escaping (_ options: UNNotificationPresentationOptions) -> Void) {
//Called when a notification is delivered to a foreground app.
let userInfo = notification.request.content.userInfo as? NSDictionary
print("\(userInfo)")
}
#available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: #escaping () -> Void) {
// Called to let your app know which action was selected by the user for a given notification.
let userInfo = response.notification.request.content.userInfo as? NSDictionary
print("\(userInfo)")
}
Add this code. You need to parse userInfo.
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void) {
let userInfo = notification.request.content.userInfo
let notification = JSON(userInfo)
print(notification)
}
Apparently this is now possible with ios10 :
optional func userNotificationCenter(_ center: UNUserNotificationCenter,
willPresent notification: UNNotification,
withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void)
This answer basically says the tools needed to do it:
Displaying a stock iOS notification banner when your app is open and in the foreground?
I'm just not really understanding how to put it all together.
I dont know how important this is, but I'm not able to keep the optional func and xcode wants me to switch it to private.
I'm trying to show the badge, and the docs provide
static var badge: UNNotificationPresentationOptions { get }
Little lost here.
And then I'm assuming if I want to exclude a certain view controller from getting these badges and I'm not using a navigation controller this code I found would work? :
var window:UIWindow?
if let viewControllers = window?.rootViewController?.childViewControllers {
for viewController in viewControllers {
if viewController.isKindOfClass(MyViewControllerClass) {
print("Found it!!!")
}
}
}
There is a delegate method to display the notification when the app is open in iOS 10. You have to implement this in order to get the rich notifications working when the app is open.
extension ViewController: UNUserNotificationCenterDelegate {
//for displaying notification when app is in foreground
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void) {
//If you don't want to show notification when app is open, do something here else and make a return here.
//Even you you don't implement this delegate method, you will not see the notification on the specified controller. So, you have to implement this delegate and make sure the below line execute. i.e. completionHandler.
completionHandler([.alert, .badge, .sound])
}
// For handling tap and user actions
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: #escaping () -> Void) {
switch response.actionIdentifier {
case "action1":
print("Action First Tapped")
case "action2":
print("Action Second Tapped")
default:
break
}
completionHandler()
}
}
In order to schedule a notification in iOS 10 and providing a badge
override func viewDidLoad() {
super.viewDidLoad()
// set UNUserNotificationCenter delegate to self
UNUserNotificationCenter.current().delegate = self
scheduleNotifications()
}
func scheduleNotifications() {
let content = UNMutableNotificationContent()
let requestIdentifier = "rajanNotification"
content.badge = 1
content.title = "This is a rich notification"
content.subtitle = "Hello there, I am Rajan Maheshwari"
content.body = "Hello body"
content.categoryIdentifier = "actionCategory"
content.sound = UNNotificationSound.default
// If you want to attach any image to show in local notification
let url = Bundle.main.url(forResource: "notificationImage", withExtension: ".jpg")
do {
let attachment = try? UNNotificationAttachment(identifier: requestIdentifier, url: url!, options: nil)
content.attachments = [attachment!]
}
let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: 3.0, repeats: false)
let request = UNNotificationRequest(identifier: requestIdentifier, content: content, trigger: trigger)
UNUserNotificationCenter.current().add(request) { (error:Error?) in
if error != nil {
print(error?.localizedDescription ?? "some unknown error")
}
print("Notification Register Success")
}
}
In order to register in AppDelegate we have to write this piece of code in didFinishLaunchingWithOptions
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
registerForRichNotifications()
return true
}
I have defined actions also here. You may skip them
func registerForRichNotifications() {
UNUserNotificationCenter.current().requestAuthorization(options: [.alert,.badge,.sound]) { (granted:Bool, error:Error?) in
if error != nil {
print(error?.localizedDescription)
}
if granted {
print("Permission granted")
} else {
print("Permission not granted")
}
}
//actions defination
let action1 = UNNotificationAction(identifier: "action1", title: "Action First", options: [.foreground])
let action2 = UNNotificationAction(identifier: "action2", title: "Action Second", options: [.foreground])
let category = UNNotificationCategory(identifier: "actionCategory", actions: [action1,action2], intentIdentifiers: [], options: [])
UNUserNotificationCenter.current().setNotificationCategories([category])
}
If you want that your notification banner should be shown everywhere in the entire application, then you can write the delegate of UNUserNotificationDelegate in AppDelegate and make the UNUserNotificationCenter current delegate to AppDelegate
extension AppDelegate: UNUserNotificationCenterDelegate {
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: #escaping () -> Void) {
print(response.notification.request.content.userInfo)
completionHandler()
}
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void) {
completionHandler([.alert, .badge, .sound])
}
}
Check this link for more details
https://www.youtube.com/watch?v=Svul_gCtzck
Github Sample
https://github.com/kenechilearnscode/UserNotificationsTutorial
Here is the output
Swift 3 | iOS 10+
Assuming you know how to schedule a local notification:
func scheduleLocalNotification(forDate notificationDate: Date) {
let calendar = Calendar.init(identifier: .gregorian)
let requestId: String = "123"
let title: String = "Notification Title"
let body: String = "Notification Body"
// construct notification content
let content = UNMutableNotificationContent()
content.title = NSString.localizedUserNotificationString(forKey: title, arguments: nil)
content.body = NSString.localizedUserNotificationString(forKey: body, arguments: nil)
content.sound = UNNotificationSound.default()
content.badge = 1
content.userInfo = [
"key1": "value1"
]
// configure trigger
let calendarComponents: [Calendar.Component] = [.year, .month, .day, .hour, .minute]
let dateComponents = calendar.dateComponents(calendarComponents, from: notificationDate)
let trigger = UNCalendarNotificationTrigger(dateMatching: dateComponents, repeats: false)
// create the request
let request = UNNotificationRequest.init(identifier: requestId, content: content, trigger: trigger)
// schedule notification
UNUserNotificationCenter.current().add(request) { (error: Error?) in
if let error = error {
// handle error
}
}
}
You need to make your AppDelegate implement the UNUserNotificationCenterDelegate protocol, and set it as the notification center's delegate with UNUserNotificationCenter.current().delegate = self.
// AppDelegate.swift
import UIKit
import UserNotifications
#UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
func application(_ application: UIApplication, didFinishLaunchingWithOptions
launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
// set app delegate as notification center delegate
UNUserNotificationCenter.current().delegate = self
}
}
extension AppDelegate: UNUserNotificationCenterDelegate {
// called when user interacts with notification (app not running in foreground)
func userNotificationCenter(_ center: UNUserNotificationCenter,
didReceive response: UNNotificationResponse, withCompletionHandler
completionHandler: #escaping () -> Void) {
// do something with the notification
print(response.notification.request.content.userInfo)
// the docs say you should execute this asap
return completionHandler()
}
// called if app is running in foreground
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent
notification: UNNotification, withCompletionHandler completionHandler:
#escaping (UNNotificationPresentationOptions) -> Void) {
// show alert while app is running in foreground
return completionHandler(UNNotificationPresentationOptions.alert)
}
}
Now your local notifications will appear when your app is in the foreground.
See the UNUserNotificationCenterDelegate docs for reference.
Key to getting your notifications to show up while your app is in the foreground is also setting:
content.setValue(true, forKey: "shouldAlwaysAlertWhileAppIsForeground")
in your UNNotificationRequest. As for the rest, see the excellent answer by Rajan Maheshwari.
When your app is open in the foreground userNotificationCenter method call
func userNotificationCenter(_ center: UNUserNotificationCenter,
willPresent notification: UNNotification,
withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void)
{
completionHandler(.alert)
}
None of these answers are good with recent IOS versions
shouldAlwaysAlertWhileAppIsForeground will crash on >= IOS 12
assigning UNUserNotificationCenter.current().delegate changes the behavior of background push notifications. UIApplicationDelegate.didReceiveRemoteNotification() is no longer called, when push notification is received and app is on background (until user clicks the notification).
So I am able to schedule notifications like so;
//iOS 10 Notification
if #available(iOS 10.0, *) {
var displayDate: String {
let dateFormatter = DateFormatter()
dateFormatter.dateStyle = DateFormatter.Style.full
return dateFormatter.string(from: datePicker.date as Date)
}
let notif = UNMutableNotificationContent()
notif.title = "I am a Reminder"
notif.subtitle = "\(displayDate)"
notif.body = "Here's the body of the notification"
notif.sound = UNNotificationSound.default()
notif.categoryIdentifier = "reminderNotification"
let today = NSDate()
let interval = datePicker.date.timeIntervalSince(today as Date)
let notifTrigger = UNTimeIntervalNotificationTrigger(timeInterval: interval, repeats: false)
let request = UNNotificationRequest(identifier: "reminderNotif", content: notif, trigger: notifTrigger)
UNUserNotificationCenter.current().add(request, withCompletionHandler: { error in
if error != nil {
print(error)
// completion(Success: false)
} else {
//completion(Sucess: true)
}
})
}
I have asked for permissions in the appDelegate and the notifications appear fine with my custom view using the notification extension.
I have added notification actions in the appDelegate for the notification category; these also appear.
//Notifications Actions
private func configureUserNotifications() {
if #available(iOS 10.0, *) {
let tomorrowAction = UNNotificationAction(identifier: "tomorrowReminder", title: "Remind Me Tomorrow", options: [])
let dismissAction = UNNotificationAction(identifier: "dismissReminder", title: "Dismiss", options: [])
let category = UNNotificationCategory(identifier: "reminderNotification", actions: [tomorrowAction, dismissAction], intentIdentifiers: [], options: [.customDismissAction])
UNUserNotificationCenter.current().setNotificationCategories([category])
} else {
// Fallback on earlier versions
}
}
I have the same category set in the notification extension .plist file. And in the notification extension I have the following to change the text when the user taps on a action.
//Handle Notification Actions And Update Notification Window
private func didReceive(_ response: UNNotificationResponse, completionHandler done: (UNNotificationContentExtensionResponseOption) -> Void) {
if response.actionIdentifier == "tomorrowReminder" {
print("Tomrrow Button Pressed")
subLabel.text = "Reminder For Tomorrow"
subLabel.textColor = UIColor.blue
done(.dismissAndForwardAction)
}
if response.actionIdentifier == "dismissReminder" {
print("Dismiss Button Pressed")
done(.dismiss)
} else {
print("Else response")
done(.dismissAndForwardAction)
}
}
However the text does not change and none of the statements are called;
Over in the appDelegate I have the following;
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey : Any]? = nil) -> Bool {
if #available(iOS 10.0, *) {
UNUserNotificationCenter.current().delegate = self
configureUserNotifications()
}
}
extension AppDelegate: UNUserNotificationCenterDelegate {
#available(iOS 10.0, *)
private func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void) {
completionHandler([.alert, .sound])
}
#available(iOS 10.0, *)
private func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: () -> Void) {
print("Recieved Action For \(response.actionIdentifier)")
if response.actionIdentifier == "tomorrowReminder" {
print("Tomorrow Reminder")
//Set new reminder for tomorrow using the notification content title
completionHandler()
}
if response.actionIdentifier == "dismissReminder" {
print("Dismiss Reminder...")
completionHandler()
}
}
}
Neither of these functions are actually called in the appDelegate either. I am not sure if the problem with updating the extension view is related to the app delegate. I don't think so, I have followed Apple's WWDC video as well as other tutorials and look at the document API and can't figure out;
Why is the Notification Extension Text Labels not updating ?
Why are the functions in the appDelegate not getting called ?
How can I using the notification content in the app delegate to use
for the action ?
PS: I have spent the past few weeks researching and trying to figure this out, it seemed fairly straight forward and I am unsure what I am missing. I know I am not the only one having these issues.
I haven't checked whole code of yours, but at least, these function headers need to be changed as follows:
func userNotificationCenter(_ center: UNUserNotificationCenter,
willPresent notification: UNNotification,
withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void) {
func userNotificationCenter(_ center: UNUserNotificationCenter,
didReceive response: UNNotificationResponse,
withCompletionHandler completionHandler: #escaping () -> Void) {
func didReceive(_ response: UNNotificationResponse,
completionHandler done: #escaping (UNNotificationContentExtensionResponseOption) -> Void) {
Simple rule:
Remove private, add #escaping.
You may have received wrong suggestions from Xcode, but with making them private, Objective-C entry points are not generated. iOS runtime uses Objective-C selectors internally, so it cannot find your methods, thus, they are not executed.