Local Notifications swift 3

Question

I am trying to send a notification on a button click. This is the code in my viewController:

@IBAction func getNotificationButtonPressed(_ sender: Any) {
    let content = UNMutableNotificationContent()
    content.title = "Title"
    content.body = "Body"
    content.categoryIdentifier = "ident"
    content.sound = UNNotificationSound.default()

    let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 0.1, repeats: false)

    let request = UNNotificationRequest(identifier: "ident", content: content, trigger: trigger)

    let center = UNUserNotificationCenter.current()

    center.add(request) { (error : Error?) in
        if let theError = error {
            print(theError.localizedDescription)
        } else {
            print ("success")
        }
    }
}

also in AppDelegate I have requested permission to use Notifications:

let center = UNUserNotificationCenter.current()
    center.requestAuthorization(options:[.badge, .alert, .sound]) { (granted, error) in
        // Enable or disable features based on authorization.
    }
    application.registerForRemoteNotifications()

P.S. I have imported

import UserNotifications

in both AppDelegate and the custom ViewController.

The way you have setup your notification it would fire right away. You don't even have time to close your app. How do you expect to receive a notification if your app it is not even in the background? — Leo Dabus, Apr 20 '17 at 12:04
https://useyourloaf.com/blog/local-notifications-with-ios-10/ Refer this all step its working fine. — Himanshu Moradiya, Apr 20 '17 at 12:06
import UserNotifications import this and declare this delegates UNUserNotificationCenterDelegate and add this in didFinishLaunchingWithOptions method let center = UNUserNotificationCenter.current() center.delegate = self return true — Himanshu Moradiya, Apr 20 '17 at 12:09
also check that you are authorised for rise notification. dont forgot to check this . — Himanshu Moradiya, Apr 20 '17 at 12:16

Himanshu Moradiya · Accepted Answer · 2017-04-20T13:15:20.643

When you create notification at that check

 if #available(iOS 10.0, *) {
     let content = UNMutableNotificationContent()
     content.title = "Intro to Notifications"
     content.subtitle = "Lets code,Talk is cheap"
     content.body = "Sample code from WWDC"
     content.sound = UNNotificationSound.default()
            // Deliver the notification in five seconds.
     let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: 5.0, repeats: false)
     let request = UNNotificationRequest(identifier:requestIdentifier, content: content, trigger: trigger)

     UNUserNotificationCenter.current().delegate = self
     UNUserNotificationCenter.current().add(request){(error) in

           if (error != nil){

                    print(error?.localizedDescription)
           }
       }
}

Implement this delegates method UNUserNotification for Notification being triggered.

@available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {

    print("Tapped in notification")
}


//This is key callback to present notification while the app is in foreground
@available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {

    print("Notification being triggered")
    //You can either present alert ,sound or increase badge while the app is in foreground too with ios 10
    //to distinguish between notifications
    if notification.request.identifier == requestIdentifier{

        completionHandler( [.alert,.sound,.badge])

    }
}

Happy coding.

Local Notifications swift 3

1 Answers1