Local notifications in iOS Swift - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to request permission for local notifications.

iOS Swift

UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { granted, error in
    if granted {
        print("Permission [1]")
    }
}

Drag options to blanks, or click blank then click option'

Adenied

Bgranted

Crequested

Dpending

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing 'granted' with 'denied'.

Using words unrelated to permission status.

The completion handler returns 'granted' as true when permission is allowed.

2fill in blank

medium

Complete the code to create a notification content with a title.

iOS Swift

let content = UNMutableNotificationContent()
content.[1] = "Hello!"

Drag options to blanks, or click blank then click option'

Atitle

Bbody

Csubtitle

Dsound

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'body' instead of 'title' for the main heading.

Confusing 'subtitle' with 'title'.

The 'title' property sets the main title of the notification.

3fill in blank

hard

Fix the error in the code to schedule a notification after 5 seconds.

iOS Swift

let trigger = UNTimeIntervalNotificationTrigger(timeInterval: [1], repeats: false)
let request = UNNotificationRequest(identifier: "test", content: content, trigger: trigger)
UNUserNotificationCenter.current().add(request)

Drag options to blanks, or click blank then click option'

A5

B-5

C0

D60

Attempts:

3 left

💡 Hint

Common Mistakes

Using zero or negative values causes errors.

Using too large a number delays notification too long.

The timeInterval must be a positive number; 5 seconds schedules the notification correctly.

4fill in blank

hard

Fill both blanks to create a notification with a badge number and sound.

iOS Swift

content.[1] = 1
content.[2] = UNNotificationSound.default

Drag options to blanks, or click blank then click option'

Abadge

Btitle

Csound

Dbody

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing 'title' or 'body' with badge or sound properties.

Using wrong property names for badge or sound.

The 'badge' property sets the app icon badge number, and 'sound' sets the notification sound.

5fill in blank

hard

Fill all three blanks to create and schedule a notification with a 10-second delay and a custom identifier.

iOS Swift

let content = UNMutableNotificationContent()
content.title = "Reminder"
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: [1], repeats: [2])
let request = UNNotificationRequest(identifier: [3], content: content, trigger: trigger)
UNUserNotificationCenter.current().add(request)

Drag options to blanks, or click blank then click option'

Afalse

B10

C"reminder_01"

Dtrue

Attempts:

3 left

💡 Hint

Common Mistakes

Setting repeats to true causes repeated notifications.

Using a number instead of a string for identifier.

Using wrong time interval values.

The time interval is 10 seconds, repeats is false to avoid repeating, and the identifier is a string to identify the notification.