ios - 如何在 Swift 中从我的应用程序检索通知

Question

我有多个登录用户，每个用户都可以在他的位置添加警报。此警报将存储在 Firebase 数据库中。

问题

问题是，如果用户所在区域发布了警报，我应该如何做才能让用户收到通知。

Answer 1

IOS 9及以上版本使用方法:

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any]) {
  // If you are receiving a notification message while your app is in the background,
  // this callback will not be fired till the user taps on the notification launching the application.
  // TODO: Handle data of notification

  // Print message ID.
  print("Message ID: \(userInfo["gcm.message_id"]!)")

  // Print full message.
  print(userInfo)
}

在函数中解析并处理这些数据。 在 iOS 10+ 中在 appdelegate header 中使用 import UserNotification 并输入此方法

@available(iOS 10, *)
extension HyberFirebaseMessagingDelegate : UNUserNotificationCenterDelegate {
    // Receive displayed notifications for iOS 10 devices.
    func userNotificationCenter(_ center: UNUserNotificationCenter,
                                willPresent notification: UNNotification,
                                withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
let userInfo = notification.request.content.userInfo
print(userInfo)//print user info
    }
}

extension HyberFirebaseMessagingDelegate : FIRMessagingDelegate {
    // Receive data message on iOS 10 devices.
    func applicationReceivedRemoteMessage(_ remoteMessage: FIRMessagingRemoteMessage) {
        print("%@", remoteMessage.appData)
    }
}

更多详情您可以阅读here