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SOLVED: Local Notifications in watchOS 6 app.

Forums > watchOS

I have a watch application that shows (local) notifications to users at scheduled time. The notifications are "reminders" to the user like "Hey, task xyz is coming up in 5 minutes".... or something to that effect.

I have the notifications working properly and everything.

What I want to do now is, if the person marked a particular "Task xyz" as "completed" before the notification even fired, then I don't want to show that notification.

1 way is whenever the user marks "Task xyz - completed", I can use removeAllPendingNotificationRequests() and after that reschedule all the notifications based on my flag "is_complete?". This is not a really good way because I don't reschedule everything everytime 1 task gets completed.

What I really want to do is, when the scheduled notification's trigger time has come, I want to call a function that checks the "is_complete?" flag and if it is true, the notification isn't fired and otherwise, it is fired.

I found 2 functions:

  1. When the app isn’t running, i.e. it’s in the background or closed, the delegate function userNotificationCenter(_:didReceive:withCompletionHandler:) is called after the user taps on it.

  2. When the app is running and in the foreground, using the delegate function userNotificationCenter(_:willPresent:withCompletionHandler:) is only called when the app is in the foreground.

So, they don't help.

Is it possible to call a function or perform an action right before a notification is fired?

   

@twostraws can you help me out with this please ? I am really stuck and can't seem to get anywhere. Thanks.

   

There is no way to intercept a notification like you describe, but you can cancel a task's notification when the user marks it complete. Instead of removing all of them, use removePendingNotificationRequests(withIdentifiers:) and pass in the ID of the task's notification. You can either save the notification ID for each task, or use getPendingNotificationRequests(completionHandler:) to get the pending notifications and decide which ones to cancel.

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