In iOS , What functions are running before the launch screen shows -


sometimes , when click app icon on desktop , keeps highlighted period of time , 1~2 seconds , app opens , shows launch screen. i've no idea how decrease waiting time.

so want know in period of time , did app ? functions running before launch screen shows ?

it sounds me doing lot in viewdidload function of initial viewcontroller of main storyboard. cause launch screen stay on screen until functionality has finished.

you can fix putting functionality background thread if it's not essential has finished before viewcontroller presented.


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