백준 swiftuicustomfontadd swiftuiontapgesutre작동안함 ios앱출시 swiftui폰트추가 ios배포 Xcode swift제네릭 swiftUI autolayout swiftuicustomfont 애플디벨로퍼아카데미 swiftuicannotpreviewinthisfile dismissliveactivityonappterminate liveactivityclose javahashset AppleDeveloperAcademy swiftuiliveactivity iOS생명주기 Java 앱스토어리젝 ioscannotpreviewinthisfile swift메서드 iOS뷰컨트롤러 ios swift클로저 the 5.5-inch iphone screenshots do not show the current version of the app in use. swiftuiontapgesture특정부분 guideline 2.3.3 - performance - accurate metadata SWIFT