swift - Close/Dismiss NSViewController, macOS

Question

I have a NSViewController connected as such:

In the bottom viewController, I try to dismiss it using self.dismiss(self) however, it produces this error:

[General] dismissViewController:: Error: maybe this view controller was not presented?

How can I ever dismiss this viewcontroller?

Any help is appreciated, thanks.

标签： swiftmacos

Answer 1

所以这就是我所做的：

在显示的窗口（NSViewController）中添加以下内容：将其作为属性添加到显示的类的顶部：

class FooViewController: NSViewController {  
// reference to a window  
var window: NSWindow?  
...  
}  

添加此 viewDidAppear 覆盖，而不是 viewDidLoad，因为窗口句柄为零。

override func viewDidAppear() {  
    // After a window is displayed, get the handle to the new window.  
    window = self.view.window!  
} 

2. 现在，您当前拥有“dismissViewController”，您可以使用：

   window?.performClose(nil) // nil 因为我没有返回消息