How do I make multiple local notifications on Swift? - swift

Question

The bottom line is that I made one local notification for a time interval of 10 seconds.
How do I add multiple notifications to this code with different time delays? That is, different notifications with different delays (several hours, days, and so on).
If this is possible, please use the example of my code.
I was told that I need to put a different identifier: "content" and different times. But I don't understand what parts of the code I need to duplicate.
import UIkit
import UserNotifications
class ViewController UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let center = UNUserNotificationCenter.current()
let content = UNMutableNotificationContent()
content.title = "Hi"
content.body = "Bear"
content.sound = UNNotificationSound.default
content.threadIdentifier = "local-notifications"
let date = Date(timeIntervalSinceNow: 10)
let dateComponents = Calendar.current.dateComponents([.year, .month, .day, .hour, .minute, .second], from: date)
let trigger = UNCalendarNotificationTrigger(dateMatching: dateComponents, repeats: false)
let request = UNNotificationRequest(identifier: "content", content: content, trigger: trigger)
center.add(request) {(error) in
if error != nil {
print (error)
}
}
}
```

Answer 1

You can create method scheduleNotification(identifier:content:date:) in UNUserNotificationCenter extension ,
extension UNUserNotificationCenter {
func scheduleNotification(identifier: String, content: UNMutableNotificationContent, date: Date) {
let dateComponents = Calendar.current.dateComponents([.year, .month, .day, .hour, .minute, .second], from: date)
let trigger = UNCalendarNotificationTrigger(dateMatching: dateComponents, repeats: false)
let request = UNNotificationRequest(identifier: identifier, content: content, trigger: trigger)
self.add(request) {(error) in
if error != nil {
print (error)
}
}
}
}
Now, call this method for multiple notifications with the appropriate parameters that you want to use, i.e.
Example-1:
let content1 = UNMutableNotificationContent()
content1.title = "Hi"
UNUserNotificationCenter.current().scheduleNotification(identifier: "content1", content: content1, date: Date(timeIntervalSinceNow: 10))
Example-2:
let content2 = UNMutableNotificationContent()
content2.title = "Hello"
UNUserNotificationCenter.current().scheduleNotification(identifier: "content2", content: content2, date: Date(timeIntervalSinceNow: 20))