iOS app crash on launch

Question

Hello my app crashed on launch on review of Apple Review Team and I didn't get crash report in Crashlytics, that is why only information I have is their response and crash report. So I share it with you, I didn't find proper information inside it, may be someone can read it better...

Response:

We were unable to review your app as it crashed on launch. We have attached detailed crash logs to help troubleshoot this issue.

Logs:

log_1, log_2

UPD: Here I found

Termination Description: SPRINGBOARD, scene-create watchdog transgression: team.codebusters.1fit exhausted real (wall clock) time allowance of 17.74 seconds | | ProcessVisibility: Foreground | ProcessState: Running | WatchdogEvent: scene-create | WatchdogVisibility: Foreground | WatchdogCPUStatistics: ( | "Elapsed total CPU time (seconds): 36.550 (user 36.550, system 0.000), 61% CPU", | "Elapsed application CPU time (seconds): 1.321, 2% CPU" | )

Are you making expenses in term of Computation work in the application beginning? — Reinier Melian, Jul 19 '18 at 09:24
check this answer https://stackoverflow.com/questions/2539831/iphone-application-launch-time-guidelines — Reinier Melian, Jul 19 '18 at 09:28
@ReinierMelian what you mean application beginning? Is it code written in `func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool` — えるまる, Jul 19 '18 at 10:14
May be you put some code that take so long to complete in didFinishedLaunchingOptions method. The error seems to be iOS killed your app because it take so long to respond. — Cosmos Man, Jul 19 '18 at 10:42
@ReinierMelian I'm making network request here, so it is the problem. Please create an answer and I will check it as right one. — えるまる, Jul 19 '18 at 11:12
@Erumaru can you post your didFinishLaunchingWithOptions method? — Reinier Melian, Jul 19 '18 at 11:20

score 4 · Accepted Answer · answered Jul 20 '18 at 06:01

4

You should avoid make long tasks in didFinishLaunchingWithOptions things that have a lot of CPU work should be moved to somewhere else in your app, normally you should add those methods in your first visible viewController and add a loading indicator

Apple indicates that the launch time limit is 20 seconds, so if your workload consume more than that, then your app will crash with watchdog transgression

answered Jul 20 '18 at 06:01

Reinier Melian

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Is there a way to check if I have effectively improved the `didFinishLaunchingWithOptions` method? Somewhere to gather watchdog alloted time vs user cpu usage time? – Nagendra Rao Sep 27 '18 at 18:47

iOS app crash on launch

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