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UIPopoverControllerUIPopoverController がクラス変数であるため、 a が破棄される前に割り当てが解除されるという問題が発生していると思います。どんな助けでも大歓迎です。

これがエラーです、私は得ています

MonoTouch.Foundation.MonoTouchException: Objective-C exception thrown.  Name: NSGenericException Reason: -[UIPopoverController dealloc] reached while popover is still visible.
  at at (wrapper managed-to-native) MonoTouch.Foundation.NSObject:monotouch_release_managed_ref (intptr)
  at MonoTouch.Foundation.NSObject.ReleaseManagedRef () [0x00000] in /Developer/MonoTouch/Source/monotouch/src/Foundation/NSObject.cs:99
  at MonoTouch.Foundation.NSObject+NSObject_Disposer.Drain (MonoTouch.Foundation.NSObject ctx) [0x00062] in /Developer/MonoTouch/Source/monotouch/src/shared/Foundation/NSObject2.cs:602
  at at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication:UIApplicationMain (int,string[],intptr,intptr)
  at MonoTouch.UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x0004c] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:38
  at Lab_assistant.Application.Main (System.String[] args) [0x00008] in /working/Lab_assistant/Main.cs:17

これがクラスです、私は取り組んでいます

using System.Drawing;
using MonoTouch.Foundation;
using MonoTouch.UIKit;

namespace Lab_assistant
{
[Register("ViewView")]
public class ViewView:UIView
{
    public  Block _b { set; get;}
    public EventHandler _touched;
    private UIView _popViewText;
    private UIViewController _Controller;
    private UIPopoverController _popUp;
    Boolean edit;

    public ViewView (Block b,BlockManger.Del TheMethod)
    {
        _b = b;
        this.Frame = b._location;
        this.BackgroundColor = UIColor.White;
        this.AddGestureRecognizer (new UILongPressGestureRecognizer (tapped));
        TheMethod (_b,this);
        this.Frame = new System.Drawing.RectangleF(b._location.Location, new System.Drawing.SizeF (b._location.Width, b._location.Height + 2));
    }

    [Export("tapped")]
    protected void tapped(UIGestureRecognizer sender)
    {
        TouchOccoured ();
    }

    public void Edit()
    {
        UIButton btn = new UIButton (UIButtonType.RoundedRect);
        _popViewText = new UIView(new System.Drawing.RectangleF(new System.Drawing.PointF(0,0), new System.Drawing.SizeF(200,200)));
        _popViewText.BackgroundColor = UIColor.DarkGray;
        btn.Hidden = false;
        btn.Frame = new System.Drawing.RectangleF(new System.Drawing.PointF(0,31),new System.Drawing.SizeF(100,30));
        btn.SetTitle ("Remove", UIControlState.Normal);

        UIButton btn2 = new UIButton (UIButtonType.RoundedRect);
        btn2.Hidden = false;
        btn2.Frame = new System.Drawing.RectangleF(new System.Drawing.PointF(0,0),new System.Drawing.SizeF(100,30));
        btn2.SetTitle ("Resize", UIControlState.Normal);

        _popViewText.AddSubview (btn);
        _popViewText.AddSubview (btn2);
        _Controller = new UIViewController ();
        _Controller.Add (_popViewText);
        _popUp = new UIPopoverController(_Controller);

        btn.TouchUpInside += (object sender, EventArgs e) => 
        {
            this.RemoveFromSuperview(); 
            edit = false;
        };
    }

    public void EditBlock()
    {
        if (!edit)
        {
            edit = true;
            _popUp.PopoverContentSize = new SizeF (200, 200);
            _popUp.PresentFromRect (new System.Drawing.RectangleF (new PointF(0,0), new System.Drawing.SizeF (20, 20)), this, UIPopoverArrowDirection.Left, true);
            //_popViewText = new UIView (rec);
        }
    }

    public void TouchOccoured()
    {
        if(_touched != null)
        {
            this.Edit ();
            this.EditBlock ();

            _touched (this, null);
        }
    }
}
}

助けてくれてどうもありがとう

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2 に答える 2

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いくつかのアイデア：

  • Edit一度だけ呼び出されるようにします。
  • も破棄されていないことを確認してくださいViewView(これは、Dispose オーバーロードを実装し、そこにブレークポイントまたは Console.WriteLine を配置することで簡単に実行できます)。
于 2013-10-07T09:48:01.807 に答える