我在应用程序中以编程方式创建tableView，遇到了以下问题：
当我的tableView的内容大小大于其框架时，tableView的第一行最初出现在标题下，但可以轻松滚动回该位置。

• • 初始加载**后窗口的屏幕截图。

内容大小大于tableView框架（问题在这里）：

内容大小小于tableView框架（这里都很好）：

我的NSViewController类代码：

class MainViewController: NSViewController, NSTableViewDelegate, NSTableViewDataSource {

let label: NSTextField = {
    let label = NSTextField()
    label.stringValue = "Test App"
    label.font = NSFont.boldSystemFont(ofSize: 14)
    label.textColor = .white
    label.alignment = .center
    label.drawsBackground = false
    label.isBezeled = false
    label.isSelectable = true
    label.isEditable = false
    label.translatesAutoresizingMaskIntoConstraints = false
    return label
}()

let labelContainerView: NSView = {
    let view = NSView()
    view.translatesAutoresizingMaskIntoConstraints = false
    return view
}()

let tableView: NSTableView = {
    let tableView = NSTableView()
    tableView.translatesAutoresizingMaskIntoConstraints = false
    tableView.usesAlternatingRowBackgroundColors = true

    let column = NSTableColumn(identifier: .init(rawValue: "MyColumnID"))
    column.headerCell.title = "Test"
    column.headerCell.alignment = .center
    tableView.addTableColumn(column)

    return tableView
}()

let scrollView: NSScrollView = {
    let scrollView = NSScrollView()
    scrollView.hasVerticalScroller = true
    scrollView.translatesAutoresizingMaskIntoConstraints = false
    return scrollView
}()

override func loadView() {
    view = NSView()
    view.wantsLayer = true
}

var names: [String] = []

override func viewDidLoad() {
    super.viewDidLoad()

    layoutUI()

    for i in 1...9 {
        let name = "Test \(i)"
        names.append(name)
    }

    scrollView.documentView = tableView

    tableView.delegate = self
    tableView.dataSource = self
}


func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView? {

    let newCell = MyCellView(identfier: NSUserInterfaceItemIdentifier(rawValue: "MyColumnID"))

    newCell.textView.stringValue = names[row]

    return newCell
}

func numberOfRows(in tableView: NSTableView) -> Int {
    return names.count
}

func layoutUI() {
    view.addSubview(labelContainerView)
    view.addSubview(scrollView)
    labelContainerView.addSubview(label)

    NSLayoutConstraint.activate([
        labelContainerView.topAnchor.constraint(equalTo: view.topAnchor),
        labelContainerView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
        labelContainerView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
        labelContainerView.heightAnchor.constraint(equalTo: view.heightAnchor,
                                                   multiplier: 1/5),

        label.centerXAnchor.constraint(equalTo: labelContainerView.centerXAnchor),
        label.centerYAnchor.constraint(equalTo: labelContainerView.centerYAnchor,
                                       constant: -4),

        scrollView.heightAnchor.constraint(equalTo: view.heightAnchor,
                                           multiplier: 4/5),
        scrollView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
        scrollView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
        scrollView.trailingAnchor.constraint(equalTo: view.trailingAnchor)
        ])
}

}