在SwiftUI中显示快餐栏消息

import UserNotifications

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge, .sound]) { (granted, error) in
        if granted {
            print("用户已授权通知")
        } else {
            print("用户未授权通知")
        }
    }
    return true
}

import UserNotifications

func showNotification() {
    let content = UNMutableNotificationContent()
    content.title = "新消息"
    content.body = "您有一条新的快餐栏消息"
    content.sound = UNNotificationSound.default
    
    let request = UNNotificationRequest(identifier: "notification", content: content, trigger: nil)
    UNUserNotificationCenter.current().add(request) { (error) in
        if let error = error {
            print("添加通知失败：\(error.localizedDescription)")
        } else {
            print("添加通知成功")
        }
    }
}

#if targetEnvironment(simulator)
    DispatchQueue.global().async {
        let center = UNUserNotificationCenter.current()
        center.delegate = self
        center.requestAuthorization(options: [.alert, .sound, .badge]) { granted, error in
            // Handle error
        }
        DispatchQueue.main.async {
            application.registerForRemoteNotifications()
        }
    }
#else
    // Register for remote notifications
#endif