Push Notifications, Episode 6: Silent Notification | Kodeco

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1

Learn how to handle a silent notification, downloading data in the background so it's ready when your user opens your app.

This is a companion discussion topic for the original entry at https://www.kodeco.com/1258151-push-notifications/lessons/6
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I’m working on standalone watch app. I’m using OneSingal to push silence notification, but it doesn’t work. However it work for the alert notification.
This is the setup process. Link

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Hello @ehwah ! Thank you so much for adding your question in the forum.

I’ll tag some team members here so they could look into this for you. Cheers!

Hello @gdelarosa @robertomachorro cc:ing you here. :blush:

4

If possible, please provide more details about your setup. Xcode changes a lot. Preferably also upload your code to Github and share a link here. Your Google Drive isn’t working at my end.

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5

Xcode

  • version 15.2
  • Using storyboard version
  • My certificate is not expire
  • I have Push Notification adding for capability
  • remote notifications checked

My Watch

  • watch series 7.
  • os version 10.3
  • Background App Refresh: Enabled
  • Lower power mode: Disable

My code

  • calling registerForRemoteNotifications() to get token after the user allow notification permission [Work]
let wkExt = WKExtension.shared()
                wkExt.registerForRemoteNotifications()
  • getting token from didRegisterForRemoteNotifications(withDeviceToken deviceToken: Data) and store the token id in OneSignal [Work]
func didRegisterForRemoteNotifications(withDeviceToken deviceToken: Data) {
        let token = deviceToken.reduce("") { $0 + String(format: "%02x", $1)}
        print(token)
        addDevice(token)
    }
  • wait for silent notification from didReceiveRemoteNotification() [Not Work]
func didReceiveRemoteNotification(_ userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (WKBackgroundFetchResult) -> Void) {
        print("did recieve remote notification", Date().description(with: .current))
        completionHandler(.newData)
    }

Testing on Apple Push Notification Tester Push Notifications Console

  • Alert Notification [Work]
  • Background Notification [Work]

Testing on OneSignal

  • Alert Notification [Work]
  • Background Notification [Not Work]
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@Audrey please see above, thanks!

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hi ehwah! this video course is from 2019, based on the first edition of the book, which has been updated three times, most recently in 2022. Have a look at section 8.3: Push Notifications by Tutorials, Chapter 8: Handling Common Scenarios | Kodeco for the Xcode 14 version. If you still have problems, ask the author @gargoyle in the Chapter 8 forum.

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