How to show local notification always at the same time?

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For local notifications, you need to generate the notification content and provide a time or location. Both Local and remote notifications inform the user to do specific action by displaying a notification badge/alert with/without sound. The badge generally shows when the app is on background or not running state. The local notification remind user that he has some relevant things to do in the app. As notification is disruptive and it hurts user’s attention, you must ask for permission to show them.

The permission part is really simple and it is same as all the other type of permission in iOS –

UNUserNotificationCenter.current()
            .requestAuthorization(options: [.alert, .sound, .badge]) { granted, _  in
                // Do something when granted
            }

Let’s create notification content –

let content = UNMutableNotificationContent()
content.title = "Content title"
content.subtitle = "Some text"

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Now create a trigger with a specific time. Here, the notification will be launched at the same(8.00AM) time daily.

var dateComponents = Calendar.current.dateComponents([.year, .month, .day], from: Date())
dateComponents.hour = 8
let trigger = UNCalendarNotificationTrigger(dateMatching: dateComponents, repeats: true)

Finally add the notification in the UNUserNotificationCenter to launch.

let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: trigger)

UNUserNotificationCenter.current().add(request) { error in
    if let error = error {
       print(error)
    }
}

✍️ Written by Ishtiak Ahmed

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