UITableView部分标题没有显示

Question

我正在尝试使用autolayout创建节标题.带标题和计数器的简单标题

class ProfilePeopleListHeaderViewCell: UIView {

  let titleLeftOffset = 12
  let counterRightOffset = 5
  let counterWidth = 50

  var title = "title" {
    didSet {
      titleLabel.text = title
    }
  }
  var numberOfPeople = 0 {
    didSet {
      peopleCounter.text = "\(numberOfPeople)"
    }
  }

  let titleLabel = UILabel()
  let peopleCounter = UILabel()


  convenience init(title: String, numberOfPeople:Int) {
    self.init()
    self.title = title
    self.numberOfPeople = numberOfPeople
    backgroundColor = UIColor.greenColor()
    titleLabel.textColor = Constants.Colors.ThemeGreen
    titleLabel.textAlignment = .Left
    if #available(iOS 8.2, *) {
      titleLabel.font = Constants.Fonts.Profile.PeopleListHeaderFont
      peopleCounter.font = Constants.Fonts.Profile.PeopleListHeaderFont
    } else {
      titleLabel.font = UIFont.systemFontOfSize(14)
      peopleCounter.font = UIFont.systemFontOfSize(14)
    }

    peopleCounter.textAlignment = .Right
    peopleCounter.textColor = Constants.Colors.ThemeDarkGray

    addSubview(titleLabel)
    addSubview(peopleCounter)
    self.titleLabel.snp_makeConstraints { (make) -> Void in
      make.centerY.equalTo(self)
      make.height.equalTo(self)
      make.width.equalTo(peopleCounter).multipliedBy(3)
      make.left.equalTo(self).offset(titleLeftOffset)
    }

    self.peopleCounter.snp_makeConstraints { (make) -> Void in
      make.centerY.equalTo(self)
      make.height.equalTo(self)
      make.width.equalTo(counterWidth)
      make.left.equalTo(titleLabel.snp_right)
      make.right.equalTo(self).offset(counterRightOffset)
    }
  }

}

检索标头的代码是:

  let mutualFriendsSectionView = ProfilePeopleListHeaderViewCell(title: Strings.Title.MutualFriends, numberOfPeople: 0)

  override func tableView(tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
     if section == 1 {
        //mutualFriendsSectionView.layoutSubviews()
        return mutualFriendsSectionView
      }
  }

override func tableView(tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
    return 40
    }

我在章节标题中获得了绿色背景.但我没有看到任何标签......

Answer 1

试试看UITableView节标题。

1. 以编程方式创建headerview

   func tableView(tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
       let headerView = UIView.init(frame: CGRectMake(0, 0, tblView.bounds.size.width, 50))
       let lblHeader = UILabel.init(frame: CGRectMake(15, 13, tableView.bounds.size.width - 10, 24))
       if section == 0 {
           lblHeader.text = "Image Settings"
       }
       else if section == 1 {
           lblHeader.text = "Personal Settings"
       }
       else {
           lblHeader.text = "Other Settings"
       }
       lblHeader.font = UIFont (name: "OpenSans-Semibold", size: 18)
       lblHeader.textColor = UIColor.blackColor()
       headerView.addSubview(lblHeader)
       headerView.backgroundColor = UIColor(colorLiteralRed: 240.0/255.0, green: 240.0/255.0, blue: 240.0/255.0, alpha: 1.0)
       return headerView
   }
   

2. HeaderView的高度

   func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
       return 50
   }
   

Answer 2

事实上它正在发挥作用。我的错误是相信 didSet{} 也在类中被调用 -> 事实并非如此。

当我在 init() 中设置标题时，它没有设置标签文本。