SwiftUI: how to send local notifications

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This post shows you how to send local notifications.

What’s in a local notification?

The local notification includes two main parts:

• Content: the content of a notification. It includes title, body, user info, etc.
• Trigger: when to send a notification. It can be time, calendar, and location triggers.

After that, you wrap these two parts into a request and add this request to the user notification center.

How to send a local notification?

It has three steps:

• Get the user notification center.
• Request notification authorization.
• Schedule a local notification.

Step 1: get the user notification center

import UserNotifications
let center = UNUserNotificationCenter.current()

Step 2: request notification authorization

center.requestAuthorization(options: [.alert, .sound, .badge]) { granted, error in
  if let error = error {
  // Handle the error here.