如何在 xamarin ios C# 中以编程方式触发 UIButton 的 TouchUpInside [英] How to fire TouchUpInside of UIButton Programmatically in xamarin ios C#

问题描述

我正在尝试以编程方式触发 Uibutton 的 touchupinside 事件.我怎样才能做到这一点 ?我尝试的代码使用 PerformSelector，但我收到此错误

I am trying to fire an touchupinside event of Uibutton programmatically. How can i do that ? The code I tried uses PerformSelector but i get this error

"Error MT4117: The registrar found a signature mismatch in the method
 'VCPAckage2.ActivityViewController.TouchUpInsideEvent' - the
 selector 'TouchUpInsideEvent:' indicates the method takes 1
 parameters, while the managed method has 2 parameters. "

我想实现类似的东西

UIButton.FireEvent("TouchUpInsideEvent") - this will fire the TouchUpInsideEvent

UIButton.PerformSelector(new MonoTouch.ObjCRuntime.Selector ("TouchUpInsideEvent:"), null, 2000f);

这是代码

 private void LoadFn()
 {
    UIButton btnSubmit = new UIButton(new RectangleF(0,0,View.Frame.Width,40));
    btnSubmit.TouchUpInside+=TouchUpInsideEvent;
 }   

 [Export("TouchUpInsideEvent:")]
 private void TouchUpInsideEvent(object sender,EventArgs e){
 float yy = AppConstants.ZeroVal;
 if (FeedbackSubmittedReturnFlag == true) {
        yy =  ChildScrollView2.Subviews[1].Frame.Height+ChildScrollView2.Subviews[1].Frame.Y;
 }
     this.ParentScrollView.SetContentOffset (new PointF (View.Frame.Width, yy), false);
 }

推荐答案

下面的代码片段就足够了

The following code snippet would be suffice

btnObj.SendActionForControlEvents(UIControlEvent.TouchUpInside);

必须从主线程调用

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