我在UITableView中有折叠和展开动画。Tableview有两个部分,第一部分数据在其中折叠和展开。这件事与ios 10完美的工作,但在ios 11部分视图重复或重叠的单元格数据是展开的。
下面是我的代码
//MARK: -Table View delegate Method
func numberOfSections(in tableView: UITableView) -> Int {
return read_Localizable("titleHelpSection").components(separatedBy: ",").count
}
//MARK: -Table View Datasource Method
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return UITableViewAutomaticDimension
}
func tableView(_ tableView: UITableView, estimatedHeightForHeaderInSection section: Int) -> CGFloat{
return 44.0
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
var headerView = tableView.dequeueReusableHeaderFooterView(withIdentifier: "headerView")
let arrSection = read_Localizable("titleHelpSection").components(separatedBy: ",")
if headerView == nil
{
headerView = UITableViewHeaderFooterView(reuseIdentifier: "headerView")
headerView?.contentView.backgroundColor = UIColor.white
let lblResult = UILabel()
lblResult.tag = 123456
lblResult.font = AppCommonSNMediumFont()
lblResult.textColor = UIColor.black
lblResult.translatesAutoresizingMaskIntoConstraints = false
headerView?.contentView.addSubview(lblResult)
let seperator = UIView()
seperator.translatesAutoresizingMaskIntoConstraints = false
seperator.backgroundColor = UIColor.black
headerView?.contentView.addSubview(seperator)
headerView?.contentView.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:|[seperator]|", options: [], metrics: nil, views: ["seperator":seperator]))
headerView?.contentView.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:|-[lable]-(>=8)-|", options: [], metrics: nil, views: ["lable":lblResult]))
headerView?.contentView.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:|-[lable]-[seperator(1)]|", options: [], metrics: nil, views: ["lable":lblResult,"seperator":seperator]))
}
if let lblResult = headerView?.contentView.viewWithTag(123456) as? UILabel
{
lblResult.text = arrSection[section]
}
return headerView
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return 20.0
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if section == 0
{
return (arrHelpData.count)
}
else
{
return 1
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if indexPath.section == 0
{
var cell = tableView.dequeueReusableCell(withIdentifier: "HelpCell") as? CellHelp;
if cell == nil {
cell = CellHelp(style: .default, reuseIdentifier: "HelpCell")
cell?.selectionStyle = .none
cell?.txtContain.delegate = self
}
if let objModel = arrHelpData.object(at: indexPath.row) as? HelpModel
{
cell?.lblTitle.text = objModel.helpTitle
if objModel.isExpanded == true
{
cell?.txtContain.text = objModel.helpDesc
}
else
{
cell?.txtContain.text = ""
}
cell?.imgArrow.isHighlighted = !objModel.isExpanded
}
return cell!
}
else
{
var cell = tableView.dequeueReusableCell(withIdentifier: "DefultCell")
if cell == nil
{
cell = UITableViewCell(style: .default, reuseIdentifier: "DefultCell")
cell?.textLabel?.textColor = color1F87A3()
cell?.textLabel?.font = AppCommonSNRegularFont()
cell?.selectionStyle = .none
cell?.textLabel?.numberOfLines = 0
}
cell?.textLabel?.text = read_Localizable("titleSettings")
return cell!
}
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if indexPath.section == 0 && indexPath.row < (arrHelpData.count)
{
if let objModel = arrHelpData.object(at: indexPath.row) as? HelpModel
{
if objModel.isExpanded == true
{
objModel.isExpanded = false
}
else
{
objModel.isExpanded = true
}
tableView.reloadData()
}
}
}
实际视图
重叠在单元格数据上的节
最佳答案
这是一个非常令人沮丧的iOS11问题,关于估计的8个问题,如果你真的想保持自己大小的行和标题,那么你需要用下面的方法。
声明变量,该变量保存单元格/标题的高度并将高度存储到其中,并按如下方式使用:
var cellHeightDictionary: NSMutableDictionary // To overcome the issue of iOS11.2
override func viewDidLoad() {
super.viewDidLoad()
tableView.rowHeight = UITableViewAutomaticDimension
tableView.estimatedRowHeight = 125
}
override func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
cellHeightDictionary.setObject(cell.frame.size.height, forKey: indexPath as NSCopying)
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
if cellHeightDictionary.object(forKey: indexPath) != nil {
let height = cellHeightDictionary.object(forKey: indexPath) as! CGFloat
return height
}
return UITableViewAutomaticDimension
}
这是唯一能解决iOS11自动调整单元格大小问题的解决方案。否则,人们建议保持估计8 0来摆脱这些问题。
在您的情况下,首先尝试这样做的细胞,这并不能完全解决问题,然后做同样的头部高度也。希望这有帮助!
不要忘记在iOS11.1和iOS11.2中进行测试。
关于ios - iOS 11 UITableViewHeaderFooterView无法正确滚动动画,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/47925164/