通知を行うための準備 ユーザへ通知許可を要求 これまでと同様、通知を行うためにはユーザに許可を得る必要があります 場所的には、アプリ起動時に呼ばれるapplication(_:didFinishLaunchingWithOptions:)がよいでしょう func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool { // notification center (singleton) let center = UNUserNotificationCenter.current() // ------------------------------------ // 前準備: ユ
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