自调整表视图单元格不工作

Question

我将估计的行高度设置为常量，将行高度设置为 UITableView自动维度，但表视图单元格仍未调整为我的单元格的详细信息文本标签的大小。我哪里出错了？

override func viewDidLoad() {
    super.viewDidLoad()

    tableView.estimatedRowHeight = 130.0
    tableView.tableFooterView = UIView()
    tableView.separatorInset.left = 50
    tableView.registerClass(CommentCellView.self, forCellReuseIdentifier: cellid)
    tableView.rowHeight = UITableViewAutomaticDimension


}

override func viewDidAppear(animated: Bool) {
    tableView.reloadData()
}

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier(cellid, forIndexPath: indexPath) as! CommentCellView

    return cell
}

override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return 5

}

override func tableView(tableView: UITableView, estimatedHeightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
    return 60.0
}

UITableViewCell类:

class CommentCellView: UITableViewCell {
    override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
        super.init(style: .Subtitle, reuseIdentifier: reuseIdentifier)

        detailTextLabel?.numberOfLines = 0
        detailTextLabel?.text = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."

}

Answer 1

设置您的标签（在此示例中称为yourText）

 var yourText : UILabel = {
    let label = UILabel()
    label.translatesAutoresizingMaskIntoConstraints = false
    return label
}()

以这种方式设置单元格约束，并将setupComponents方法放在此处：

 required init(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)!
        setupComponents()
    }

    override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
        super.init(style: .Subtitle, reuseIdentifier: "CellId")

        setupComponents()

    }

        func setupComponents(){



    self.addSubview(yourText)

    yourText.leftAnchor.constraintEqualToAnchor(self.leftAnchor, constant: 6).active = true
            yourText.centerYAnchor.constraintEqualToAnchor(self.centerYAnchor).active = true
            yourText.widthAnchor.constraintEqualToConstant(110).active = true

    yourText.numberOfLines = 0

    yourText.lineBreakMode = NSLineBreakMode.ByWordWrapping
     self.bottomAnchor.constraintEqualToAnchor(yourText.bottomAnchor, constant: 5).active = true
    }