iOS app crashes with EXC_CRASH (SIGKILL) when app goes back from background to foreground


[CAGradientLayer _clearContents]: unrecognized selector sent to instance 0x2815c31a0

CoreFoundation ___exceptionPreprocess + 232

1 libobjc.A.dylib objc_exception_throw + 60

2 CoreFoundation -[NSOrderedSet initWithSet:copyItems:]

3 CoreFoundation ____forwarding___ + 1412

4 CoreFoundation _CF_forwarding_prep_0 + 96

5 UIKitCore -[UILabel _startMarquee] + 3332

6 libdispatch.dylib __dispatch_call_block_and_release + 32

7 libdispatch.dylib __dispatch_client_callout + 20

8 libdispatch.dylib _dispatch_main_queue_callback_4CF + 1012

9 CoreFoundation _CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 16

10 CoreFoundation ___CFRunLoopRun + 1888

11 CoreFoundation CFRunLoopRunSpecific + 452

12 GraphicsServices GSEventRunModal + 108

13 UIKitCore UIApplicationMain + 216

14 金囿 main (main.m:14)

15 libdyld.dylib _start + 4

and it happpened only iphonexs max,and it always happened when the app go back from background to foreground ,could you help me, thanks

Up vote post of jinyouxuetang Down vote post of jinyouxuetang
2.3k views
Posted by
jinyouxuetang
Reply
Add a Comment

Replies

Are you using Marquee framework ?


Which version of Xode, which version of IOS ?


Avoid duplicating posts on different sections.

That's the same post as

https://forums.developer.apple.com/message/358362#358362


You did not answer completely the question.

Are you using external frameworks that are using Marquee ?

5 UIKitCore -[UILabel _startMarquee] + 3332

Posted by
Claude31
Up vote reply of Claude31 Down vote reply of Claude31
Add a Comment

I posted two versions of application with xcode 9 and 10 version, both xcode versions appeared the same problem, and it only happened on iphone xs max , all application code did not use Marquee.

Posted by
jinyouxuetang
Up vote reply of jinyouxuetang Down vote reply of jinyouxuetang
Add a Comment

Can you show the code where the error occurs.


You may have some UI code not running in the main thread.

Posted by
Claude31
Up vote reply of Claude31 Down vote reply of Claude31
Add a Comment