Swift：NSNibでCustom Viewを取得

• CustomView.xibを作る
• CustomView.swiftを作ってCustomView: NSViewクラスを作る
• xibのViewのCustom ClassにCustomViewを設定する

読み込み方

let nib = NSNib(nibNamed: "CustomView", bundle: Bundle.main)!
var topLevelArray: NSArray? = nil
guard
    nib.instantiate(withOwner: nil, topLevelObjects: &topLevelArray),
    let results = topLevelArray as? [Any],
    let item = results.last(where: { $0 is CustomView }),
    let customView = item as? CustomView else {
        // failed to load
        return
}
customViewゲット

CustomViewの例

class CustomView: NSView {
    
    @IBOutlet weak var label: NSTextField!
    @IBOutlet weak var imageView: NSImageView!
    
    // 初期化はここで行う
    override func awakeFromNib() {
        super.awakeFromNib()

        label.stringValue = "Hello World"
        imageView.image = NSImage(imageLiteralResourceName: "Sample")
    }
    
}