Xamarin.ios 在UIAlertView（iOS、Xamarin）上添加UITextView，而不使用任何第三方库

我想在iOS中显示一个对话框，并在对话框视图中添加一个

UITextView

。

UITextView

textView包含可点击的电子邮件、电话和url链接文本。我可以触发对话框，但只能使用标题和“确定”按钮。没有文本视图被添加到对话框视图中。我不确定这里的问题是与textview有关，还是与视图添加到对话框的方式有关

请在下面检查我的代码：

 UITextView textView = new UITextView();
 textView.Editable = false;
 textView.DataDetectorTypes = UIDataDetectorType.All;
 textView.Message = message;
 var dlg = UIAlertController.Create(Title ?? String.Empty, null, UIAlertControllerStyle.Alert);
 dlg.View.AddSubview(textView);
 dlg.AddAction(UIAlertAction.Create(OkText, UIAlertActionStyle.Default, action => Submit()));                

 var top = Utils.GetTopViewController();
 top.PresentViewController(dlg, animated: true, completionHandler: null);

---

谢谢，

似乎您需要一个自定义弹出视图来完成所需的内容，我为您编写了一个示例，以下是代码：

这是ViewController.cs：

public partial class ViewController : UIViewController
{
    public ViewController (IntPtr handle) : base (handle)
    {
    }

    public override void ViewDidLoad ()
    {
        this.View.BackgroundColor = UIColor.Gray;
        this.View.AddGestureRecognizer (new UITapGestureRecognizer (() => {
            CustomPopUpView cpuv = new CustomPopUpView (new CoreGraphics.CGSize (300, 200));
            cpuv.PopUp (true,delegate{
                Console.WriteLine("cpuv will close");
            });
        }));
    }
}

这是CustomPopUpView.cs：

public class CustomPopUpView : UIView
{
    public delegate void PopWillCloseHandler ();
    public event PopWillCloseHandler PopWillClose;

    private UIVisualEffectView effectView = new UIVisualEffectView (UIBlurEffect.FromStyle (UIBlurEffectStyle.Dark));
    private UIButton btnClose = new UIButton (UIButtonType.System);

    public CustomPopUpView (CGSize size)
    {
        nfloat lx = (UIScreen.MainScreen.Bounds.Width - size.Width) / 2;
        nfloat ly = (UIScreen.MainScreen.Bounds.Height - size.Height) / 2;
        this.Frame = new CGRect (new CGPoint (lx, ly), size);

        effectView.Alpha = 0;

        this.BackgroundColor = UIColor.White;

        nfloat btnHeight = 40;
        btnClose.SetTitle ("Close", UIControlState.Normal);
        btnClose.Frame = new CGRect (0, this.Frame.Height - btnHeight, this.Frame.Width, btnHeight);
        btnClose.TouchUpInside += delegate {
            Close();
        };
        this.AddSubview (btnClose);
    }

    public void PopUp (bool animated = true, Action popAnimationFinish = null)
    {
        UIWindow window = UIApplication.SharedApplication.KeyWindow;
        effectView.Frame = window.Bounds;
        window.EndEditing (true);
        window.AddSubview (effectView);
        window.AddSubview (this);

        if (animated) {
            Transform = CGAffineTransform.MakeScale (0.1f, 0.1f);
            UIView.Animate (0.15, delegate {
                Transform = CGAffineTransform.MakeScale (1, 1);
                effectView.Alpha = 0.8f;
            },delegate {
                if(null != popAnimationFinish)
                    popAnimationFinish ();
            });
        } else {
            effectView.Alpha = 0.8f;
        }
    }

    public void Close (bool animated = true)
    {
        if (animated) {
            UIView.Animate (0.15, delegate {
                Transform = CGAffineTransform.MakeScale (0.1f, 0.1f);
                effectView.Alpha = 0;
            }, delegate {
                this.RemoveFromSuperview();
                effectView.RemoveFromSuperview();
                if(null != PopWillClose) PopWillClose ();
            });
        } else {
            if(null != PopWillClose) PopWillClose ();
        }
    }
}

您可以将任何需要的内容添加到此CustomPopUpView，也可以继承它并创建自己的弹出窗口

---

希望它能帮助您。

这就是如何在UIAlertViewController中添加UITextField的方法

  var alert = UIAlertController.Create(Enter OTP, "", UIAlertControllerStyle.Alert);
            alert.AddTextField((obj) =>
            {
                obj.Font = UIFont.SystemFontOfSize(20);
                obj.TextAlignment = UITextAlignment.Center;
                obj.Placeholder = "OTP";

            });

            alert.AddAction(UIAlertAction.Create("Submit", UIAlertActionStyle.Default, (obj) => 
            {
                chargeReference = reference;
                statusValue = alert.TextFields[0].Text;
                CompleteFunding();
            }));
            PresentViewController(alert, true, null);

---

我希望这有助于

当我关闭弹出窗口时，屏幕上仍有小的白色区域，我更改了

Transform=CGAffineTransform.MakeScale（0.1f，0.1f）到
Transform=CGAffineTransform.MakeScale（0.01f，0.01f）很抱歉，我忘了删除它，你应该在关闭动画完成后删除它，我已经编辑了我的代码，谢谢你提醒。@FahadRehman