如何使用Xamarin iOS在MugenMvvm中使用自定义控件绑定事件

Question

我想将TouchUpInside事件绑定到带有MugenMvvm的Xamarin iOS上的自定义控件。

bindingSet.Bind(moreThanFourHoursButton).To(() => (vm, ctx) => vm.TimeButtonClickedCommand)

我尝试了上面的代码，但我得到以下异常：

错误：无法从“Mobile.EDevice.iOS.Views.Custom.TimeButton”上的路径“DefaultBindingMember”获取绑定成员。 at MugenMvvmToolkit.Binding.Infrastructure.BindingMemberProvider.GetBindingMember（System.Type sourceType，System.String path，System.Boolean ignoreAttachedMembers，System.Boolean throwOnError）[0x0010a] in <89993fb2052d4882bce9f7d6fb2304e4>：0 at MugenMvvmToolkit.Binding.BindingExtensions.TryGetBindingMemberValue [TSource ，TValue]（资源来源，MugenMvvmToolkit.Binding.Models.BindingMemberDescriptor 2[TSource,TValue] member, System.Object[] args, System.Boolean throwOnError, TValue& value) [0x0003f] in <89993fb2052d4882bce9f7d6fb2304e4>:0 at MugenMvvmToolkit.Binding.BindingExtensions.GetBindingMemberValue[TSource,TValue] (TSource source, MugenMvvmToolkit.Binding.Models.BindingMemberDescriptor 2 [TSource，TValue]成员，System.Object [] args）[0x00000]位于<89993fb2052d4882bce9f7d6fb2304e4>：0，位于MugenMvvmToolkit.Binding.BindingExtensions .GetBindingMemberValue [TSource，TValue]（TSource源码，MugenMvvmToolkit.Binding.Models.BindingMemberDescriptor 2[TSource,TValue] member) [0x00007] in <89993fb2052d4882bce9f7d6fb2304e4>:0 at MugenMvvmToolkit.Binding.BindingBuilderExtensions.Bind[TTarget,TSource] (MugenMvvmToolkit.Binding.Interfaces.IBindingBuilder builder, TTarget targetGeneric) [0x00000] in <89993fb2052d4882bce9f7d6fb2304e4>:0 at MugenMvvmToolkit.Binding.Builders.BindingSet 2[TSource,TValue] member) [0x00007] in <89993fb2052d4882bce9f7d6fb2304e4>:0 at MugenMvvmToolkit.Binding.BindingBuilderExtensions.Bind[TTarget,TSource] (MugenMvvmToolkit.Binding.Interfaces.IBindingBuilder builder, TTarget targetGeneric) [0x00000] in <89993fb2052d4882bce9f7d6fb2304e4>:0 at MugenMvvmToolkit.Binding.Builders.BindingSet 1 [TSource在./ Users / Admin / Documents / CimziaCompanionApp-中的Mobile.EDevice.iOS.Views.Controllers.ActivityTracking.ActivityDurationViewController.ViewDidLoad（）[0x00a1b]中绑定[89993fb2052d4882bce9f7d6fb2304e4>：0中的[TLocalTarget]（TLocalTarget目标）[0x00006] Mobile / src / iOS / Views / Controllers / ActivityTracking / ActivityDurationViewController.cs：154 at（wrapper managed-to-native）ObjCRuntime.Messaging：void_objc_msgSendSuper_IntPtr_bool_IntPtr（intptr，intptr，intptr，bool，intptr）at UIKit.UIViewController.PresentViewController（UIKit） .UIViewController viewControllerToPresent，System.Boolean animated，System.Action completionHandler）[0x0006e]在/ Users / builder / data / lanes / 4691 / d2270eec / source / xamarin-macios / src / build / ios / native / UIKit / UIViewController.g.cs：789 at MugenMvvmToolkit.iOS.Infrastructure.Mediators.ModalViewMediator.ShowView（MugenMvvmToolkit.iOS.Interfaces.Views.IModalView视图，System.Boolean isDialog，MugenMvvmToolkit.Interfaces。模型.IDataContext上下文）[0x0005f]在<5ec134adfe6542a4bd7f31656741c9a6>：0在MugenMvvmToolkit.Infrastructure.Mediators.WindowViewMediatorBase 1+<>c[TView].<ShowInternal>b__55_2 (MugenMvvmToolkit.Infrastructure.Mediators.WindowViewMediatorBase 1 [TView] base，System .Boolean b，MugenMvvmToolkit.Interfaces.Models.IDataContext arg3）[0x00007]

Answer 1

好吧，所以我想出来了，这是我将我的Command绑定到自定义EventHandler的方式：

bindingSet.Bind(moreThanFourHoursButton, nameof(moreThanFourHoursButton.Click)).To(() => (vm, ctx) => vm.TimeButtonClickedCommand)