iOS Push Notification Notes

UIApplication

https://developer.apple.com/documentation/uikit/uiapplication/

 

registerForRemoteNotifications()

https://developer.apple.com/documentation/uikit/uiapplication/1623078-registerforremotenotifications

If registration succeeds, the app calls your app delegate object’s application(_:didRegisterForRemoteNotificationsWithDeviceToken:) method and passes it a device token.

application(_:didRegisterForRemoteNotificationsWithDeviceToken:)

https://developer.apple.com/documentation/uikit/uiapplicationdelegate/1622958-application

deviceToken
A globally unique token that identifies this device to APNs. Send this token to the server that you use to generate remote notifications. Your server must pass this token unmodified back to APNs when sending those remote notifications.
APNs device tokens are of variable length. Do not hard-code their size.

Messaging

https://firebase.google.com/docs/reference/swift/firebasemessaging/api/reference/Classes/Messaging

MessagingDelegate

https://firebase.google.com/docs/reference/swift/firebasemessaging/api/reference/Protocols/MessagingDelegate.html

1. 執行 application.registerForRemoteNotifications()

2. application(_:didRegisterForRemoteNotificationsWithDeviceToken:) 被呼叫

3. Messaging.messaging().delegate = self
    Messaging.messaging().apnsToken = deviceToken

4. func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String?) 被呼叫

5. let dataDict: [String: String] = ["token": fcmToken ?? ""]
        
    NotificationCenter.default.post(
        name: Notification.Name("FCMToken"),
        object: nil,
        userInfo: dataDict
    )