ios - viewForHeader具有动态高度？

我返回的是viewForHeader中table views的具有动态高度的视图。我有2个部分。但是我得到的视图是第0部分中的标头第1部分，而对于第1部分则没有任何视图将要出现空白。下面是代码。

        tblList.estimatedSectionHeaderHeight = 100
        tblList.sectionHeaderHeight = UITableViewAutomaticDimension


        func numberOfSections(in tableView: UITableView) -> Int {
            return 2
        }

       func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
        print("Section: \(section)")
            let view = UIView()
            let lbl = UILabel()
           view.backgroundColor = UIColor.LGColor()

            view.translatesAutoresizingMaskIntoConstraints  = false
            lbl.translatesAutoresizingMaskIntoConstraints = false
            view.addSubview(lbl)
            lbl.font = UIFont.subHeadline

            view.addConstraint(NSLayoutConstraint(item: lbl, attribute: .top, relatedBy: .equal, toItem: view, attribute: .top, multiplier: 1, constant: 3))

            view.addConstraint(NSLayoutConstraint(item: lbl, attribute: .leading, relatedBy: .equal, toItem: view, attribute: .leading, multiplier: 1, constant: 10))

            view.addConstraint(NSLayoutConstraint(item: lbl, attribute: .trailing, relatedBy: .lessThanOrEqual, toItem: view, attribute: .trailing, multiplier: 1, constant: -10))

            view.addConstraint(NSLayoutConstraint(item: lbl, attribute: .height, relatedBy:.greaterThanOrEqual, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: 21))

            view.addConstraint(NSLayoutConstraint(item: view, attribute: .bottom, relatedBy: .equal, toItem: lbl, attribute: .bottom, multiplier: 1, constant: 3))


   view.addConstraint(NSLayoutConstraint(item: view, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: tableView.frame.size.width))

        if section == 0 {
            view.backgroundColor = .red
        } else {
            view.backgroundColor = .yellow
        }
        return view
}

最佳答案

这是因为您设置了view.translatesAutoresizingMaskIntoConstraints = false，对该行进行了注释并检查是否可以同时看到这两个部分

关于ios - viewForHeader具有动态高度？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/44797013/