app推送购买

import UserNotifications

// 请求推送权限
UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { granted, error in
    if granted {
        DispatchQueue.main.async {
            UIApplication.shared.registerForRemoteNotifications()
        }
    }
}

// 发送推送通知
func sendPushNotification(to token: String, title: String, body: String) {
    let content = UNMutableNotificationContent()
    content.title = title
    content.body = body
    
    let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 5, repeats: false)
    
    let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: trigger)
    
    UNUserNotificationCenter.current().add(request) { error in
        if let error = error {
            print("Error sending notification: \(error.localizedDescription)")
        }
    }
}