Clash Royale CLAN TAG#URR8PPP

xamarin stacklayout child removes itself

I have a simple Stacklayout that shows Buttons.
I want to be able to let children remove itself from the stacklayout.

Stacklayout

stacklayout

this project is just for testing purposes, so every button is linked to the same event-handler.

private void Button_Pressed_1(object sender, EventArgs e)

stack.Children.RemoveAt(stack.Children.Count - 1);



everything's fine until one button removes itself, then the following unsupported error appears:

Unhandled Exception:

System.NotSupportedException: Unable to activate instance of type
Xamarin.Forms.Platform.Android.AppCompat.ButtonRenderer from native
handle 0xbfb79bfc (key_handle 0x3e59524).

Has anyone an idea how to accomplish this? Since it's a nonSupportedException a simple try & catch didn't do the job

nonSupportedException

EDIT:
I got it working, i registered the eventhandler to the Pressed-Event. Appearently that was the problem, when using the Clicke-Event everything works just fine.

1 Answer
1

What 's version of Xamarin which you are using? I tried with Xamarin.Form 3.0.0.561731 and it worked well.
Please check my code as bellow:

Xaml page:

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:local="clr-namespace:RemoveItSelf"
x:Class="RemoveItSelf.MainPage">

<StackLayout x:Name="stack">
<!-- Place new controls here -->
<Label Text="Welcome to Xamarin.Forms!"
HorizontalOptions="Center"
VerticalOptions="CenterAndExpand" />
<Label Text="Welcome to Xamarin.Forms!"
HorizontalOptions="Center"
VerticalOptions="CenterAndExpand" />
<Button Text="Remove" Clicked="PressMeButton_Clicked"></Button>
</StackLayout>

</ContentPage>


Xaml.cs page:

namespace RemoveItSelf

public partial class MainPage : ContentPage

public MainPage()

InitializeComponent();


private void PressMeButton_Clicked(object sender, EventArgs e)

//stack.Children.RemoveAt(0);
stack.Children.RemoveAt(stack.Children.Count - 1);





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