Troubleshooting post-boot push notification delive

问题:

My app receives push notifications successfully if run at least once per boot both in the background and when force closed (thanks to PushKit).

If I reboot the device, I won't receive any pushes until I launch the app at least once.

How can I get this scenario working? I'm running latest Xcode and iOS (8.3)

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If I leave the app running in the background when I reboot the device, the app still shows up in the recents menu however no pushes are received and no AppDelegate entry points are hit (that I have anyways).

• All push/notification permissions are enabled as well as Background App Refresh
• Background Mode Capabilities are enabled (VoIP, push, fetch)

回答1:

The problem was that the app was going dormant before the callback to update credentials.

The solution was to start a background task in didLaunchWithOptions and end the background task in the didUpdatePushCredentials function.