ios - 单击链接会冻结应用程序

Question

我正在使用Xamarin.TTTAttributedLabel在 xamarin.ios 应用程序中解析 HTML。大多数时候，每当我点击链接时，它都会冻结应用程序。有时它有效，有时则无效。我在UIView --> ScrollView中使用Label。我的滚动视图没有任何点击手势。这不会发生在模拟器上。仅在物理设备上。

View.AddSubview (scrollView)
TTTAttributedLabel lbl = new TTTAttributedLabel();
lbl.SetText(attributedString, 15f);
lbl.Lines = 0;
lbl.EnabledTextCheckingTypes = NSTextCheckingType.Link | NSTextCheckingType.PhoneNumber;
lbl.UserInteractionEnabled = true;
lbl.Delegate = new TTTHTMLLabelDelegate(this);
lbl.Frame = new CGRect (15, 0, Common.screenWidth - 30, 20);
lbl.SizeToFit();
view2.AddSubview(lbl);
scrollView.AddSubview(view2);



//Delegate code
public override void DidSelectLinkWithURL(TTTAttributedLabel label, NSUrl url)
        {
            if (url != null)
            {
                var PageUrl = url.ToString();
                if (!string.IsNullOrWhiteSpace(PageUrl))
                {
                    if (PageUrl.StartsWith("mailto"))
                    {
                        //code to open email app
                    }
                    else if (PageUrl.StartsWith("tel"))
                    {
                       //code to open phone app

                    }
                    else
                    {
                        //for <a> links
                        UIApplication.SharedApplication.OpenUrl(url)
                    }
                }
            }

        }

更新了示例代码。我还观察到一件事，DidSelectLinkWithURL当应用程序冻结时不会被调用。

Answer 1

尝试存储您的变量

public class YourClass
{
TTTAttributedLabel lbl;

 ViewDidLoad()
 {
       View.AddSubview (scrollView)
       lbl = new TTTAttributedLabel();
       lbl.SetText(attributedString, 15f);
       lbl.Lines = 0;
       lbl.EnabledTextCheckingTypes = NSTextCheckingType.Link | 
       NSTextCheckingType.PhoneNumber;
       lbl.UserInteractionEnabled = true;
       lbl.Delegate = new TTTHTMLLabelDelegate(this);
       lbl.Frame = new CGRect (15, 0, Common.screenWidth - 30, 20);
       lbl.SizeToFit();
       view2.AddSubview(lbl);
       scrollView.AddSubview(view2);
 }
}