[iOS, Swift] LocalNotification Badge 숫자 올리기

iOS 15.5, Xcode 13.31, Swift 5, UIKit 환경에서 진행했습니다.

 

let content = UNMutableNotificationContent()
content.title = "Noti 연습"
content.subtitle = "tistory"
content.body = "lorem ipsum ...."
content.badge = (UIApplication.shared.applicationIconBadgeNumber + 1) as NSNumber

UIApplication에서 applicationIconBadgeNumber를 활용한다.