英文:
Unable to add behaviour to StateView in .Net Maui
问题
我有一个Xamarin.forms应用程序，在其中我能够向StateView添加行为。现在我正在将项目迁移到.NET Maui。迁移项目后，我无法再向StateView添加行为了。似乎StateView在CommunityToolkit中变成了一个静态类。我该如何解决这个问题？
我如何向StateView添加行为
static void OnAttachBehaviorChanged(BindableObject view, object oldValue, object newValue)
{
if (!(view is StateView stateView))
{
return;
}
bool attachBehavior = (bool)newValue;
if (attachBehavior)
{
stateView.Behaviors.Add(new EntranceTransitionBehavior());
}
else
{
var toRemove = stateView.Behaviors.FirstOrDefault(b => b is EntranceTransitionBehavior);
if (toRemove != null)
{
stateView.Behaviors.Remove(toRemove);
}
}
}
但现在在Maui中，我收到错误消息
'StateView'不包含对'Behaviors'的定义，也找不到接受类型为'StateView'的第一个参数的可访问扩展方法'Behaviors'（是否缺少使用指令或程序集引用？）
任何帮助都将不胜感激。
英文:
I had a Xamarin.forms app in which I am able to add. behaviour to a StateView. Now I am migrating the project into .Net Maui. After migrating the project I cant able to add the Behaviour to StateView anymore. It seems StateView became a static class in CommunityToolkit. How can I resolve this?
How I added the Behaviour to the StateView
static void OnAttachBehaviorChanged(BindableObject view, object oldValue, object newValue)
{
if (!(view is StateView stateView))
{
return;
}
bool attachBehavior = (bool)newValue;
if (attachBehavior)
{
stateView.Behaviors.Add(new EntranceTransitionBehavior());
}
else
{
var toRemove = stateView.Behaviors.FirstOrDefault(b => b is EntranceTransitionBehavior);
if (toRemove != null)
{
stateView.Behaviors.Remove(toRemove);
}
}
}
But Now in Maui, I am getting error like
> 'StateView' does not contain a definition for 'Behaviors' and no
> accessible extension method 'Behaviors' accepting a first argument of
> type 'StateView' could be found (are you missing a using directive or
> an assembly reference?
Any help is appriciated.
答案1
得分: 1
在MAUI中，StateView属于StateContainer，StateView的类型是IList<View>，它是可用作状态模板的视图元素。这可能与Xamarin社区工具包的StateLayout有些不同。更多信息，请参考.NET MAUI Community Toolkit StateContainer。
英文:
In the MAUI, the StateView belongs to StateContainer and the type of StateView is IList<View> and it is the available View elements to be used as state templates.
It might be a little different from the Xamarin Community Toolkit StateLayout.
More information you can refer to the .NET MAUI Community Toolkit StateContainer.
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