感谢@stevesliva为我指出了 。我将其转换为Swift。这就是我得到的。

我在ViewController中创建一个NSCollectionView：

import Cocoa

class ViewController: NSViewController {

var titles = [String]()
var collectionView: NSCollectionView?

override func viewDidLoad() {
    super.viewDidLoad()

    self.titles = ["Banana", "Apple", "Strawberry", "Cherry", "Pear", "Pineapple", "Grape", "Melon"]
    collectionView = NSCollectionView(frame: self.view.frame)
    collectionView!.itemPrototype = CollectionViewItem()
    collectionView!.content = self.titles
    collectionView!.autoresizingMask = NSAutoresizingMaskOptions.ViewWidthSizable | NSAutoresizingMaskOptions.ViewMaxXMargin | NSAutoresizingMaskOptions.ViewMinYMargin | NSAutoresizingMaskOptions.ViewHeightSizable | NSAutoresizingMaskOptions.ViewMaxYMargin

    var index = 0
    for title in titles {
        var item = self.collectionView!.itemAtIndex(index) as! CollectionViewItem
        item.getView().button?.title = self.titles[index]
        index++
    }
    self.view.addSubview(collectionView!)

}
}

在ViewController中创建的CollectionViewItem只需加载一个视图，即可在其中设置项目视图本身。

import Cocoa

class CollectionViewItem: NSCollectionViewItem {

var itemView: ItemView?

override func viewDidLoad() {
    super.viewDidLoad()
    // Do view setup here.
}

override func loadView() {
    self.itemView = ItemView(frame: NSZeroRect)
    self.view = self.itemView!
}

func getView() -> ItemView {
    return self.itemView!
}
}

视图本身：

import Cocoa

class ItemView: NSView {

let buttonSize: NSSize = NSSize(width: 100, height: 20)
let itemSize: NSSize = NSSize(width: 120, height: 40)
let buttonOrigin: NSPoint = NSPoint(x: 10, y: 10)

var button: NSButton?

override func drawRect(dirtyRect: NSRect) {
    super.drawRect(dirtyRect)

    // Drawing code here.
}

override init(frame frameRect: NSRect) {
    super.init(frame: NSRect(origin: frameRect.origin, size: itemSize))
    let newButton = NSButton(frame: NSRect(origin: buttonOrigin, size: buttonSize))
    newButton.bezelStyle = NSBezelStyle.RoundedBezelStyle
    self.addSubview(newButton)
    self.button = newButton;
}

required init?(coder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
}

func setButtonTitle(title: String) {
    self.button!.title = title
}
}

要设置按钮标题，我使用了一种技巧。（ViewController中的for循环）如果有更好的方法设置标题，请随时发表评论。