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 Storyboard使用“模态呈现”功能启动转场,但每次单击按钮在模拟器中执行转场时,我都会收到以下错误:
Failed to marshal the Objective-C object 0x7f8018511770 (type: loginViewController). Could not find an existing managed instance for this object, nor was it possible to create a new managed instance (because the type 'iOSApp.loginViewController' does not have a constructor that takes one IntPtr argument).
知道是什么导致了这个问题吗?我还附上了我的 main.storyboard 文件的屏幕截图。
以下代码片段是我的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.
}
}
}
最佳答案
在您的 LoginViewController
类中,确保您具有以下构造函数,以便它可以从 Storyboard 中扩展:
protected YourClassNameViewController(IntPtr handle) : base(handle)
{
// Note: this .ctor should not contain any initialization logic.
}
如果您的类名是 loginViewController
,那么您的类将类似于:
protected partial class loginViewController : UIViewController
{
public loginViewController(IntPtr handle) : base (handle)
{
// Note: this .ctor should not contain any initialization logic.
}
~~~~ rest of class
}
关于c# - 简单的 Segue 在 Xamarin 中不起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43260746/