Object reference not set to an instance of an object error

[kevinvella]

Describe the bug
When i remove the Xamarin.Forms.InputKit package the application works.

To Reproduce
Trying to reproduce it in a sample app

Expected behavior
Does not crash

Smartphone (please complete the following information):

• Device: iPhone XS Max
• OS: iOS 12.1
• Version 12.1

Xamarin Forms v3.6.0.264807
Xamarin.Forms.InputKit v3.0.2
Xamarin Forms Material v3.6.0.264807

Additional context
" at Xamarin.Forms.VisualStateManager.GoToState (Xamarin.Forms.VisualElement visualElement, System.String name) [0x00000] in D:\\a\\1\\s\\Xamarin.Forms.Core\\VisualStateManager.cs:51 \n at Plugin.InputKit.Platforms.iOS.StackLayoutWithVisualStatesRenderer.TouchesCancelled (Foundation.NSSet touches, UIKit.UIEvent evt) [0x00006] in <3af430ba27d545b5bdad56c17d32cb4e>:0 \n at (wrapper managed-to-native) UIKit.UIApplication.UIApplicationMain(int,string[],intptr,intptr)\n at UIKit.UIApplication.Main (System.String[] args, System.IntPtr principal, System.IntPtr delegate) [0x00005] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.2.1.16/src/Xamarin.iOS/UIKit/UIApplication.cs:79 \n at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x0002c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.2.1.16/src/Xamarin.iOS/UIKit/UIApplication.cs:63 \n at Nutrivitas.Mobile.iOS.Application.Main (System.String[] args) [0x00001] in

I know this issue is a little vague. But i am trying to understand how this is being triggered myself.

[enisn]

Do you have a CustomRenderer which exported to StackLayout in your iOS project ?
I think two of renderers are conflicted from InputKit and yours.

Commit 01229bb will solve if problem this is.

[kevinvella]

I have custom renderers for pickers, and buttons.
And have a custom date picker based on grid and stack layout

I was not able to replicate it in a sample using the custom date picker only.
InputKitException.zip

[kevinvella]

Hi,
When will the update be available to nuget?

[enisn]

@kevinvella

Can you try new version v3.0.3

That problem should be fixed at

[kevinvella]

@enisn

Thanks. Confirming that the issue is fixed with this update.
Closing this issue. Thanks very much :)