Push Notification Registration

Goal

Register the device for remote push notifications and obtain the device token to send to your server.

Actions Required

Action	Purpose
NotificationServicesRequestPermission	Request notification permissions
NotificationServicesGetRequestPermissionError	Read cached error after permission failure (optional)
NotificationServicesOnRegisterForPushNotificationsComplete	Listen for device token

Variables Needed

• deviceToken (String)

• errorCode (Int)

• errorDescription (String)

• serverUrl (String) - Your backend URL

Implementation Steps

1. State: RequestPermission

Action: NotificationServicesRequestPermission

• Inputs:

  • requestAlert: true

  • requestBadge: true

  • requestSound: true

• Events:

  • grantedEvent → ListenForToken

  • deniedEvent → ShowError

  • failureEvent → ShowError

Optional: On failureEvent, call NotificationServicesGetRequestPermissionError to read errorCode + errorDescription.

2. State: ListenForToken

Action: NotificationServicesOnRegisterForPushNotificationsComplete

• Outputs:

  • deviceToken → deviceToken variable

  • errorCode → errorCode

  • errorDescription → errorDescription

• Events:

  • successEvent → SendTokenToServer

  • failureEvent → ShowError

Note: This is a persistent listener - it waits for the registration callback from the OS.

3. State: SendTokenToServer

Send deviceToken to your backend server via HTTP POST:

• Endpoint: serverUrl/register-device

• Payload: {"token": deviceToken, "platform": "iOS/Android"}

Transition: Go to Complete

4. State: Complete

• Store deviceToken locally for reference

• Display success message

• Ready to receive push notifications from server

Server Integration Flow

Request Permission
    └─ Listen for Token
        └─ Success → Send to Server
            └─ Server uses token for APNs (iOS) or FCM (Android)

Common Issues

• No Token Received: Check internet connection, verify platform push setup (APNs/FCM certificates)

• Token Changes: Device token can change on app reinstall; always update server with latest token

• Simulator Limitation: Push notifications don't work on iOS Simulator; test on real devices

• Permission Denied: Cannot register for push without notification permissions

Server Requirements

iOS (APNs):

• Valid APNs certificate or auth key

• Server sends notifications to Apple Push Notification service

Android (FCM):

• Firebase Cloud Messaging project setup

• Server API key configured

Platform Differences

iOS:

• Returns 64-character hex string token

• Requires APNs setup in Apple Developer

Android:

• Returns FCM registration token

• Requires google-services.json configuration

Security Note

Treat device tokens as sensitive data. Always transmit via HTTPS to your server and store securely.