I have the same question and have posted about this in https://forums.developer.apple.com/forums/thread/741939?page=1. Apple's documentation is a bit unclear about how the app is notified that a live activity is being created from push notification. Any further explanation will be very helpful.
tjait05
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Could anybody provide insight on how exactly the Live Activity is created via the push notification. Apple's docs state "When the system receives the ActivityKit push notification on a device, it starts a new Live Activity, wakes up your app, and grants it background run time to allow you to download assets that the Live Activity needs." Can anybody elaborate on how/where exactly this happens?
I'm able to successfully obtain the pushToStartToken and can successfully deliver APNS payload via CloudKit - Push Notifications tool. I see in the delivery logs that my push notification was both received by the APNS server and successfully delivered to target device. Once delivered, I see my pushToStartTokenUpdates trigger once more and can get an updated token but, I don't fully understand how/where the live activity is actually created. Any information would be much appreciated