Xamarin
A Microsoft open-source app platform for building Android and iOS apps with .NET and C#.
5,326 questions
What causes iOS to crash from the following native code?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(310.4, 33%, 40%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ER%3C/text%3E%3C/svg%3E)
rami
1
Reputation point
I am using AppCenter to track errors and crashes for my Xamarin Forms app and from the reports a crash with a native stacktrace is shown:
BoxRenderer.LayoutSubviews () (wrapper managed-to-native) UIKit.UIApplication.UIApplicationMain(int,string[],intptr,intptr) UIApplication.Main (System.String[] args, System.IntPtr principal, System.IntPtr delegate) UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) Application.Main (System.String[] args)
I am using Boxview with this code
<BoxView HeightRequest="1" HorizontalOptions="FillAndExpand" BackgroundColor="Black"></BoxView>
but i am note sure what causes that error because I cannot reproduce it.
I am asking for help if anyone has an explanation about that.
Thanks
Basic Information
Version with issue: 4.8.0.1451
Last known good version:
Platform Target Frameworks:
iOS: 13.10.0.21
NuGet Packages:
Affected Devices: iPhone iOS 14.2, 14.3, 13.7
{count} votes
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(118.4, 97%, 21%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ELZ%3C/text%3E%3C/svg%3E)
Lucas Zhang - MSFT 336 Reputation points2021-01-25T12:53:15.36+00:00 Did you change the UI in code behind ? It would be better to post the full code in xaml which is helpful to solve the issue .
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rami 1 Reputation point
2021-01-25T13:37:19.423+00:00 no, UI is not changed from codebehind
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Lucas Zhang - MSFT 336 Reputation points
2021-01-26T06:51:48.347+00:00 Does the app crash when you debug on emulator or real device ?
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rami 1 Reputation point
2021-01-26T11:23:24.993+00:00 App is crashed only on real devices. Mainly from iOS 14.3, 14.2, 13.7.
It does not happen on every device with these versions but in some of them yes. I have no idea what causes it... -
Lucas Zhang - MSFT 336 Reputation points
2021-01-27T10:57:56.533+00:00 Could you share a sample so that I can test it on my side ?
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rami 1 Reputation point
2021-01-27T14:57:14.997+00:00 I can't localize the problem because the mobile app is a big project with many views, so i cant send a sample.
I opened the issue on xamarin.forms and they responded that it is similiar to 13136Maybe if i update the solution to 5.0 it will work.
Thank you
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