jocontacter
commented
4 years ago the same error but with CollectionView when after changing ItemTemplate i trying to add to Item's ObservableCollection one item
Open SBurgos00 opened 4 years ago
jocontacter
commented
4 years ago the same error but with CollectionView when after changing ItemTemplate i trying to add to Item's ObservableCollection one item
I have an app that has a CarouselView visible in some rows of a ListView. When scrolling past the row with the CarouselView until it's out of the screen and then back up it crashes with the below exception. If all the CarouselViews in the list rows are visible the crash happened sooner. Sometimes it just happened scrolling down. The best I can find is that it happens on iOS 12 and lower. iOS 13 is no problem. I attached a sample project to show this trying to make it as simple as I can. CarouselViewTest.zip
The crash happens on iOS 12.4.7 physical iPad mini 2 and on iOS 11.1 and 12.1 simulators. On iOS 13.5.1 iPad there's no crash. My app used images in the CarouselView but the sample app used strings and still crashed. The number of items in the CarouselView doesn't seem to matter. Xamarin.Forms 4.5.0.495, 4.6.0.847 and 4.7.0.1080 all have the same results.
One difference was on iOS 13.1 simulator, XF 4.7.0.1080. The exception instead was: System.NullReferenceException Message=Object reference not set to an instance of an object at Xamarin.Forms.Platform.iOS.ItemsViewLayout.InvalidateLayout () [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\CollectionView\ItemsViewLayout.cs:545 at (wrapper managed-to-native) ObjCRuntime.Messaging.void_objc_msgSendSuper_CGSize(intptr,intptr,CoreGraphics.CGSize) at UIKit.UICollectionViewFlowLayout.set_ItemSize (CoreGraphics.CGSize value) [0x00024] in /Library/Frameworks/Xamarin.iOS.framework/Versions/13.18.2.1/src/Xamarin.iOS/UICollectionViewFlowLayout.g.cs:272 at Xamarin.Forms.Platform.iOS.CarouselViewLayout.ConstrainTo (CoreGraphics.CGSize size) [0x00074] in D:\a\1\s\Xamarin.Forms.Platform.iOS\CollectionView\CarouselViewLayout.cs:32 at Xamarin.Forms.Platform.iOS.CarouselViewController.BoundsSizeChanged () [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\CollectionView\CarouselViewController.cs:109 at Xamarin.Forms.Platform.iOS.CarouselViewController.ViewDidLayoutSubviews () [0x0003f] in D:\a\1\s\Xamarin.Forms.Platform.iOS\CollectionView\CarouselViewController.cs:57 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/13.18.2.1/src/Xamarin.iOS/UIKit/UIApplication.cs:86 at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x0000e] in /Library/Frameworks/Xamarin.iOS.framework/Versions/13.18.2.1/src/Xamarin.iOS/UIKit/UIApplication.cs:65 at CarouselViewTest.iOS.Application.Main (System.String[] args) [0x00001] in C:\Users\sburgos\source\repos\CarouselViewTest\CarouselViewTest\CarouselViewTest.iOS\Main.cs:17
Foundation.MonoTouchException Message=Objective-C exception thrown. Name: NSInternalInconsistencyException Reason: UICollectionView received layout attributes for a cell with an index path that does not exist: <NSIndexPath: 0x83d060db0f000ab2> {length = 2, path = 0 - 0} Native stack trace: 0 CoreFoundation 0x000000011db3f1bb exceptionPreprocess + 331 1 libobjc.A.dylib 0x000000011e8a2735 objc_exception_throw + 48 2 CoreFoundation 0x000000011db3ef42 +[NSException raise:format:arguments:] + 98 3 Foundation 0x000000011abd2877 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 194 4 UIKitCore 0x0000000127f79dfa 45-[UICollectionViewData validateLayoutInRect:]_block_invoke + 1354 5 UIKitCore 0x0000000127f79379 -[UICollectionViewData validateLayoutInRect:] + 2483 6 UIKitCore 0x0000000127f4700e -[UICollectionView layoutSubviews] + 260 7 UIKitCore 0x0000000128bd4795 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 1441 8 QuartzCore 0x0000000118b52b19 -[CALayer layoutSublayers] + 175 9 QuartzCore 0x0000000118b579d3 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 395 10 UIKitCore 0x0000000128bbf077 -[UIView(Hierarchy) layoutBelowIfNeeded] + 1429 11 UIKitCore 0x0000000128bc6235 +[UIView(Animation) performWithoutAnimation:] + 90 12 UIKitCore 0x000000012892e89b -[UITableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:] + 1328 13 UIKitCore . 0x000000012892ebfb -[UITableView _createPreparedCellForGlobalRow:willDisplay:] + 73 14 UIKitCore 0x00000001288f5c36 -[UITableView _updateVisibleCellsNow:isRecursive:] + 2863 15 UIKitCore 0x00000001289168ee -[UITableView layoutSubviews] + 165 16 UIKitCore 0x0000000128bd4795 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 1441 17 QuartzCore 0x0000000118b52b19 -[CALayer layoutSublayers] + 175 18 QuartzCore 0x0000000118b579d3 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 395 19 QuartzCore 0x0000000118ad07ca _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 342 20 QuartzCore 0x0000000118b0797e _ZN2CA11Transaction6commitEv + 576 21 QuartzCore 0x0000000118b086fa _ZN2CA11Transaction17observer_callbackEP19CFRunLoopObservermPv + 76 22 CoreFoundation 0x000000011daa3c27 CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION + 23 23 CoreFoundation 0x000000011da9e0be CFRunLoopDoObservers + 430 24 CoreFoundation 0x000000011da9e751 __CFRunLoopRun + 1537 25 CoreFoundation 0x000000011da9de11 CFRunLoopRunSpecific + 625 26 GraphicsServices 0x0000000122d021dd GSEventRunModal + 62 27 UIKitCore 0x00000001286ea81d UIApplicationMain + 140 28 ??? 0x00000001430c8125 0x0 + 5419860261 29 ??? 0x00000001430c7e73 0x0 + 5419859571 30 ??? 0x00000001430be253 0x0 + 5419819603 31 CarouselViewTest.iOS 0x000000010ffe6521 mono_jit_runtime_invoke + 1569 32 CarouselViewTest.iOS 0x00000001100fefc8 mono_runtime_invoke_checked + 136 33 CarouselViewTest.iOS 0x0000000110104445 mono_runtime_exec_main_checked + 117 34 CarouselViewTest.iOS 0x000000010ff5253c mono_jit_exec + 364 35 CarouselViewTest.iOS 0x00000001101fda1d xamarin_main + 2685 36 CarouselViewTest.iOS 0x000000010ff29cb7 main + 71 37 libdyld.dylib 0x000000011febe575 start + 1
Source=Xamarin.iOS StackTrace: at ObjCRuntime.Runtime.ThrowNSException (System.IntPtr ns_exception) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/13.18.2.1/src/Xamarin.iOS/ObjCRuntime/Runtime.cs:406 at ObjCRuntime.Runtime.throw_ns_exception (System.IntPtr exc) [0x00000] in /Users/builder/jenkins/workspace/xamarin-macios/xamarin-macios/runtime/Delegates.generated.cs:128 at (wrapper native-to-managed) ObjCRuntime.Runtime.throw_ns_exception(intptr) 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/13.18.2.1/src/Xamarin.iOS/UIKit/UIApplication.cs:86 at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x0000e] in /Library/Frameworks/Xamarin.iOS.framework/Versions/13.18.2.1/src/Xamarin.iOS/UIKit/UIApplication.cs:65 at CarouselViewTest.iOS.Application.Main (System.String[] args) [0x00001] in C:\Users\sburgos\source\repos\CarouselViewTest\CarouselViewTest\CarouselViewTest.iOS\Main.cs:17