UNUserNotificationCenter.current().requestAuthorization( Under import UIKit, add the following: import UserNotificationsĪdd the following properties and constants to the ViewController class I’ll assume you’ve read the post on how to make a user notification. I’m going to go fast here and just give you the code. Close the assistant editor and go to Viewcontroller.swift. Control drag from the label to the code and make a IBOutlet named commentsLabel. Open to the assistant editor and control-drag from the button to the code to make an IBAction named StartButton. This way, long text entries will word wrap by themselves. Set the Lines to 0 and Line Break to Word Wrap. I suggest changing the attributes of the label. I’m not going to get fancy here, but I set up my button and label like this: Make it a Swift Application with a Universal device. Open a new single view project in Xcode called NotificationCategoryDemo. You’ll find a starter file here notificationcategorydemo_start if you want to skip this section. We’ll add two actions to this alarm: one as a five second snooze button and the other to place a comment on the notification. The alarm will time for 10 seconds, then display an alarm and sound a sound. Let’s set up an example application to show a very simple alarm application. There are time and memory limits on the code, so keep it short and simple. This makes for a very flexible system for adding small bits of code to a application. Instead you specify in a method of UNUserNotificationCenterDelegate the code based on an identifier in the action. You can mix and match categories and actions as much as you wish.Īctions have no executable code. Categories are a set of actions we can link to the content of a notification. Actions are controls added to a notification, usually a button. Notifications have two special objects called categories and actions. Categories, Actions and Delegates - Oh my! In this lesson I’ll show you how to use this powerful feature. Using categories and actions you can build code that does that directly from the notification. ![]() You don’t have to open the app to do custom actions or even to input data. One very exciting part of the frame work is executing the app’s code in the background. In earlier lessons I’ve shown you how to make a notification and how to manage notifications with the UserNotifications frame work.
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