单击uiimageview ios Xamarin C上的事件#

从技术上讲,Xamarin.iOS中的UIImageView没有Click事件,因为iOS SDK中的UIImage View没有Click事件。Xamarin将iOS SDK概念直接映射到C#结构,因此您在C#中看到的就是在Objective-C中看到的(大部分)。您在Titanium中看到的是,他们自己的抽象和功能被添加到他们的特定框架中,并添加到实际的iOS SDK之上。

话虽如此,但对您来说,一个可行的选择(因为看起来您希望将UIImageView用作按钮)是简单地创建一个看起来像Image的按钮,而不是相反。这样的操作应该有效。

public UIButton img_UploadImage { get; set; }

public ConstructorClass(){
     img_UploadImage = UIButton.FromType(UIButtonType.Custom);
     img_UploadImage.Frame = new RectangleF(100, 100, 60, 50);
     img_UploadImage.setImage(UIImage.FromFile("UploadLocal.png");

     //Set up event handler for "Click" event ("TouchUpInside in iOS terminology)
     img_UploadImage.TouchUpInside += (object sender, EventArgs e) => {
          //Do some action.
     };
}

试试这个对我有用

private void AddTapGesture()
{
    //  you can achieve this from user interface look image below
    YourImageView.UserInteractionEnabled = true;
    var tapGesture = new UITapGestureRecognizer(this,
        new ObjCRuntime.Selector("ImageTrigger:"))
    {
        NumberOfTapsRequired = 1 // change number as you want 
    };
    YourImageView.AddGestureRecognizer(tapGesture);
}

[Export("ImageTrigger:")]
public void ImageTrigger(UIGestureRecognizer sender)
{
    System.Diagnostics.Debug.WriteLine("Button Clicked");
}