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  • 【Swift Mac开发】纯代码创建NSViewController

      对于习惯了纯代码iOS开发的人来说,刚接触Mac端开发时,是非常不友好的,网上所有的教程都是通过Xib或StoryBoard的方式创建NSViewController,而且苹果文档也是鼓励用Xib的开发进行Mac 开发,但对于纯代码开发也给了补救方式,现在给大家分享一种可以直接代码创建的方式。

      Apple Document:

    If you pass in a nil for nibNameOrNil then nibName will return nil and loadView will throw an exception; in this case you must invoke setView: before view is invoked, or override loadView.

      翻译如下:

    如果为nbNameOrNil传递nil,则nibName将返回nil,并且loadView会引发异常;在这种情况下,您必须在调用视图之前调用setView:,或重写loadView。

      如果不补救,对于通过JFProgrammaticallyViewController()创建的控制器,会报如下错误:

     -[NSNib _initWithNibNamed:bundle:options:] could not load the nibName: CodeCreateUiDemo.JFProgrammaticallyViewController in bundle (null).

      废话少说,上代码:

    import Cocoa
    import SnapKit
    
    class ViewController: NSViewController {
    
        var button : NSButton!
        override func viewDidLoad() {
            super.viewDidLoad()
    
            button = NSButton(frame: CGRect(x: 0, y: 0,  100, height: 100))
            button.wantsLayer = true
            button.layer?.backgroundColor = NSColor.red.cgColor
            button.title = "click"
            button.target = self
            button.action = #selector(clickAction(sender:))
            self.view.addSubview(button)
        }
    
        @objc func clickAction(sender:NSButton) {
            let programmaticallyVC = JFProgrammaticallyViewController()
            self.presentAsModalWindow(programmaticallyVC)
        }
        
        override var representedObject: Any? {
            didSet {
            // Update the view, if already loaded.
            }
        }
    
    }
    
    
    
    
    
    //纯代码创建的ViewController
    import Cocoa
    
    class JFProgrammaticallyViewController: NSViewController {
    
        var mView : NSView!
        
        //这一端是重重之中,对于无法通过Nib加载view,就要通过loadView()方法来进行补救,
        override func loadView() {
            self.view = NSView(frame: CGRect(x: 0, y: 0,  400, height: 300))
        }
        
        override func viewDidLoad() {
            super.viewDidLoad()
            
            mView = NSView(frame: NSRect(x: 0, y: 0,  self.view.bounds.size.width, height: self.view.bounds.size.height))
            mView.wantsLayer = true
            mView.layer?.backgroundColor = NSColor.red.cgColor
            self.view.addSubview(mView)
        }
        
    }

       运行如下图;

    分享链接:

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  • 原文地址:https://www.cnblogs.com/xjf125/p/14754418.html
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