binding - Mvvmcross 3.5绑定(bind)显示交战

将我的项目更新为Unified API和MVVM Cross 3.5 stable之后，对于所有按钮绑定，我在控制台中收到以下警告消息...

我像这样绑定。

try {
 this.AddBindings(
  new Dictionary < object, string > () {

   //all the command controls - such as buttons
   {
    btnXmit,
    "TouchUpInside cmdXmitClicked"
   }, {
    btnCancel,
    "TouchUpInside cmdBack"
   },

  });
} catch (Exception error) {

}

在

/Volumes/WORKSPACE/Workspace/V3.5/framework/framework/MvvmCross-3/CrossCore/Cirrious.CrossCore/WeakSubscription/MvxWe52EventSubscription中的Cirrious.CrossCore.WeakSubscription.MvxWeakEventSubscription

2[System.Windows.Input.ICommand,System.EventArgs]..ctor (ICommand source, System.Reflection.EventInfo sourceEventInfo, System.EventHandler

1 targetEventHandler）[0x00028]。
在/Volumes/WORKSPACE/Workspace/V3.5/framework/framework/MvvmCross-3/CrossCore/Cirrious中的Cirrious.CrossCore.WeakSubscription.MvxCanExecuteChangedEventSubscription..ctor（ICommand源，System.EventHandler

1 eventHandler) [0x00000] in /Volumes/WORKSPACE/Workspace/V3.5/framework/framework/MvvmCross-3/CrossCore/Cirrious.CrossCore/WeakSubscription/MvxCanExecuteChangedEventSubscription.cs:21    at Cirrious.CrossCore.WeakSubscription.MvxWeakSubscriptionExtensionMethods.WeakSubscribe (ICommand source, System.EventHandler

1 eventHandler）[0x00003] .CrossCore / WeakSubscription / MvxWeakSubscriptionExtensionMethods.cs：68
在/Volumes/WORKSPACE/Workspace/V3.5/framework/framework/MvvmCross-3/Cirrious/中的Cirrious.MvvmCross.Binding.Touch.Target.MvxUIControlTouchUpInsideTargetBinding.SetValueImpl（System.Object target，System.Object value）[0x00045] Cirrious.MvvmCross.Binding.Touch / Target / MvxUIControlTouchUpInsideTargetBinding.cs：74
在/Volumes/WORKSPACE/Workspace/V3.5/framework/framework/MvvmCross-3/Cirrious/Cirrious/Cirrious/Cirrious.Cirrious.Cirrious.Cirrious.Cirrious.Cirrious.MvvmCross.Binding中的Cirrious.MvvmCross.Binding.Bindings.Target.MvxConvertingTargetBinding.SetValue（System.Object value）[0x000bd] /Bindings/Target/MvxConvertingTargetBinding.cs:64
在/Volumes/WORKSPACE/Workspace/V3.5/framework/framework/MvvmCross-3/Cirrious/Cirrious.MvvmCross.Binding/Bindings的/Volumes/WORKSPACE/Workspace/V3.5/framework/framework/MvvmCross-3/Cirrious.MvvmCross.Binding.Bindings.MvxFullBinding.UpdateTargetFromSource（System.Object value）[0x00036]中/MvxFullBinding.cs:162
2015-02-16 17：48：14.433 RemoteInspectioniOS [3506：119564] MvxBind：错误：212.37在为cmdBack绑定TouchUpInside的绑定执行期间看到问题-问题ArgumentNullException：MvxWeakEventSubscription中缺少源事件信息
参数名称：sourceEventInfo
在/Volumes/WORKSPACE/Workspace/V3.5/framework/framework/MvvmCross-3/CrossCore/Cirrious.CrossCore/WeakSubscription/MvxWeakEventSubscription中的Cirrious.CrossCore.WeakSubscription.MvxWeakEventSubscription

2[System.Windows.Input.ICommand,System.EventArgs]..ctor (ICommand source, System.Reflection.EventInfo sourceEventInfo, System.EventHandler

1 eventHandler) [0x00000] in /Volumes/WORKSPACE/Workspace/V3.5/framework/framework/MvvmCross-3/CrossCore/Cirrious.CrossCore/WeakSubscription/MvxCanExecuteChangedEventSubscription.cs:21    at Cirrious.CrossCore.WeakSubscription.MvxWeakSubscriptionExtensionMethods.WeakSubscribe (ICommand source, System.EventHandler

最佳答案

您需要使用以下代码创建一个LinkerPleaseInclude.cs文件：

public class LinkerPleaseInclude
{
    public void Include(ICommand command)
    {
        command.CanExecuteChanged += (s, e) => { if (command.CanExecute(null)) command.Execute(null); };
    }
}

编辑（根据我的评论）：

关于binding - Mvvmcross 3.5绑定(bind)显示交战，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/28541931/