1. Home
  2. Forum
  3. Xamarin.Forms
  4. Syncfusion.SfListView.XForms.iOS crashing on iOS

Syncfusion.SfListView.XForms.iOS crashing on iOS

Hi there,
My app is getting crash whenever I click on my SfListView item. It always returns System.NullReferenceException
Following is my stack trace:

at Syncfusion.ListView.XForms.iOS.ExtendedScrollViewRenderer.get_ListView () [0x00006] in :0
at Syncfusion.ListView.XForms.iOS.ExtendedScrollViewRenderer.get_SwipeController () [0x00000] in :0
at Syncfusion.ListView.XForms.iOS.ExtendedScrollViewRenderer.b__14_0 (UIKit.UIGestureRecognizer gesture1, UIKit.UIGestureRecognizer gesture2) [0x00041] in :0
at UIKit.UIGestureRecognizer+_UIGestureRecognizerDelegate.ShouldRecognizeSimultaneously (UIKit.UIGestureRecognizer gestureRecognizer, UIKit.UIGestureRecognizer otherGestureRecognizer) [0x0000a] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.14.0.13/src/Xamarin.iOS/UIKit/UIGestureRecognizer.g.cs:899
at (wrapper managed-to-native) UIKit.UIApplication.UIApplicationMain(int,string[],intptr,intptr)
at UIKit.UIApplication.Main (System.String[] args, System.IntPtr principal, System.IntPtr delegate) [0x00005] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.14.0.13/src/Xamarin.iOS/UIKit/UIApplication.cs:79
at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x0002c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.14.0.13/src/Xamarin.iOS/UIKit/UIApplication.cs:63

Any help will be extremely appreciated.
Thanks in advance

1 Reply
VR Vigneshkumar Ramasamy Syncfusion Team September 3, 2018 12:23 PM UTC

Hi Zaid,  
  
Thanks for contacting Syncfusion support.  
  
We have checked the reported query from our end. We have tried to replicate the issue in our sample in ItemTapped Event, unfortunately reported issue didn’t occur in our sample in SfListview(16.2.0.50) , XF 3.1. We have already faced this similar issue when disposing object in iOS , swipe delete and fixed that issue. Can you please explain the your use case in detail. We suspect that you might have load listview within complex layouts. We have attached the tested sample for your reference, please find the sample from below link.  
  
  
Can you please check with the above sample? whether you are facing similar issue in our sample. If no, we would request you to modify the sample which would highly helpful to us to analyze the issue better and update you an appropriate solution.   
  
Regards,  
Vigneshkumar R 


Loader.
Up arrow icon