Firebase, Swift: Send a push notification to specific user given device token

问题

I have a Firebase Swift chat app where I'd like to send a push notification to a specific user. I have already captured and have access to the user's device token.

All the references mention having to have a 'web app' to manage this, but I haven't managed to find any specific examples of this.

Is it necessary to have a web app to manage push notifications for Firebase?
If so, are there any examples of how this can work?

Thank you.

回答1:

First do the all configuration for Firebase Cloud Messaging. Can follow this link https://firebase.google.com/docs/cloud-messaging/ios/client
Now you need to access Firebase registration token for your associated user whom you want to send a push notification. You can get this token by following below steps:
1. Add 'Firebase/Messaging' pod to your project.
2. import FirebaseMessaging in your AppDelegate.swift file.
3. Conform MessagingDelegate protocol to your AppDelegate class.
4. Write didRefreshRegistrationToken delegate method and get your user's registration token:

Now you are ready to send push notification to your specific user. Send notification as below:

func sendPushNotification(payloadDict: [String: Any]) {
   let url = URL(string: "https://fcm.googleapis.com/fcm/send")!
   var request = URLRequest(url: url)
   request.setValue("application/json", forHTTPHeaderField: "Content-Type")
   // get your **server key** from your Firebase project console under **Cloud Messaging** tab
   request.setValue("key=enter your server key", forHTTPHeaderField: "Authorization")
   request.httpMethod = "POST"
   request.httpBody = try? JSONSerialization.data(withJSONObject: payloadDict, options: [])
   let task = URLSession.shared.dataTask(with: request) { data, response, error in
      guard let data = data, error == nil else {
        print(error ?? "")
        return
      }
      if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 {
        print("statusCode should be 200, but is \(httpStatus.statusCode)")
        print(response ?? "")
      }
      print("Notfication sent successfully.")
      let responseString = String(data: data, encoding: .utf8)
      print(responseString ?? "")
   }
   task.resume()
}

Now call above function as:

let userToken = "your specific user's firebase registration token"
let notifPayload: [String: Any] = ["to": userToken,"notification": ["title":"You got a new meassage.","body":"This message is sent for you","badge":1,"sound":"default"]]
self.sendPushNotification(payloadDict: notifPayload)

来源：https://stackoverflow.com/questions/45678212/firebase-swift-send-a-push-notification-to-specific-user-given-device-token

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ios

swift

firebase

apple-push-notifications