Hi,
Just want to understand what is the current state of iOS 15 prewarming app delegate behaviour.
There is a lot of confusion (and a lack of documentation) about which app delegate methods are called during prewarming. It's not clear if didFinishLaunchingWithOptions will be called or not during prewarming.
A lot of applications are counting on UserDefaults and Keychain access in didFinishLaunchingWithOptions, but sadly these two features seems to be unavailable during prewarming causing issues.
Some users say that this was the case before 15.4 and that from 15.4 the didFinishLaunchingWithOptions app delegate method is no more called during prewarming.
Just want to know if we can have an official statement about this.
It is safe, from iOS 15.4 onwards, to use UserDefaults and access Keychain in the didFinishLaunchingWithOptions app delegate method?
Thank you