TouchBehavior with LongPressDuration

[lperezj]

I have a question about the TouchBehavior, I don't know if it's a bug or if I'm doing something wrong.
I´m using CommunityToolkit.Maui version 9.1.1, i can´t update because my solution is .NET 8.0 (i´m using the lastest compatible version)

I have in my code

<Frame.Behaviors>
    <xct:TouchBehavior LongPressDuration="{Binding RaiseTime}" 
                                    LongPressCommand="{Binding TimedCommand}" />
</Frame.Behaviors>

but when i build, throw this exception

Cannot resolve type "http://schemas.microsoft.com/dotnet/2022/maui/toolkit:xct:TouchBehavior".

and i have the initilizer in MauiProgram

var builder = MauiApp.CreateBuilder();

_ = builder
    .UseMauiApp<App>()
    .UseMauiCommunityToolkit()            

Anybody knows what is the problem?

He intentado hacer varias cosas:

1. If I create in the main MAUI project and put in MainView.xml the reference to the toolkit and in the xaml the TouchBehavior, it works. ???
2. I have created an empty MAUI project of type Library, with a control and it does not work.

Is it not possible create a MAUI Library using Toolkit ?????

[lperezj]

Solved !!!!

I had to create in the external projects to MAUIProgram, a static class to preserve my Behavior

using CommunityToolkit.Maui.Behaviors;

namespace your.namespace
{
    public static class ToolkitLinkerHack
    {
        public static void Preserve() => _ = typeof(TouchBehavior);
    }
}

and in MauiProgram.cs call this static method after the Build action

your.namespace.ToolkitLinkerHack.Preserve();
return builder.Build();