Question

我正在使用xamarin studio在我的应用程序中尝试一个简单的segue。我使用故事板使用“当前模态”功能启动segue，但每次单击按钮在模拟器中执行segue时，我都会收到以下错误：

无法封送Objective-C对象0x7f8018511770（类型：loginViewController）。找不到此对象的现有托管实例，也无法创建新的托管实例（因为“iOSApp.loginViewController”类型没有带有一个IntPtr参数的构造函数。）

有什么可能导致问题的想法？我也附上了我的main.storyboard文件的截图。

以下代码段是我的ViewController.cs文件和loginViewController.cs代码

using System;

using UIKit;

namespace iOSApp
{
    public partial class ViewController : UIViewController
    {
        protected ViewController(IntPtr handle) : base(handle)
        {
            // Note: this .ctor should not contain any initialization logic.
        }

        public override void ViewDidLoad()
        {
            base.ViewDidLoad();
            // Perform any additional setup after loading the view, typically from a nib.
        }

        public override void DidReceiveMemoryWarning()
        {
            base.DidReceiveMemoryWarning();
            // Release any cached data, images, etc that aren't in use.
        }
     }
}

和

using System;

using UIKit;

namespace iOSApp
{


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

        public override void ViewDidLoad()
        {
            base.ViewDidLoad();
            // Perform any additional setup after loading the view, typically from a nib.
        }

        public override void DidReceiveMemoryWarning()
        {
            base.DidReceiveMemoryWarning();
            // Release any cached data, images, etc that aren't in use.
        }


    }
}

Answer 1

在LoginViewController班级中，请确保您拥有以下构造函数，以便可以从故事板中对其进行充气：

protected YourClassNameViewController(IntPtr handle) : base(handle)
{
    // Note: this .ctor should not contain any initialization logic.
}

如果您的班级名称为loginViewController，那么您的班级将如下所示：

protected partial class loginViewController : UIViewController
{
    public loginViewController(IntPtr handle) : base (handle)
    {
       // Note: this .ctor should not contain any initialization logic.
    }

    ~~~~ rest of class
}

简单的Segue不在Xamarin工作

1 个答案: