【发布时间】：2016-05-05 18:30:08
【问题描述】：
我有一个包含 tableview 的视图控制器。表格视图由包含单个标签的自定义单元格组成。我有不同长度的文本，这些文本将显示在这些单元格中。我面临的问题是，细胞没有扩大到适当的高度。我已经尝试了 SO 中存在的许多解决方案，但到目前为止它们都没有奏效。 这是视图控制器的代码
class ViewController: UIViewController {
@IBOutlet var tableView: UITableView!
let items = [
"This is the first text",
"This is the first text and this is the second text","now you may be thinking where is the third text?. Well, There was the first text and second text, now here is the third text",
"This is the fourth short and sweet text",
"Slow down you crazy child, you're so ambitious for a juvenile. If you're so smart, tell me why are you still so afraid.","Where's the fire? What's the hurry about. You better cool it off before you burn it out. There's so much to do and so many hours in a day.You got your passion, got your pride. Don't you know that only fools are satisfied. Dream on but don't imagine that they come true. Don't even realise vienna waits for you"]
var prototypeCell:CustomCell!
override func viewDidLoad() {
super.viewDidLoad()
//setting up tableview
self.tableView.allowsSelection = false
self.tableView.dataSource = self
self.tableView.delegate = self
configurePrototypeCell()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func configureCell(cell:CustomCell, forIndexPath indexPath:NSIndexPath)
{
cell.itemLabel.text = items[indexPath.row]
}
func configurePrototypeCell()
{
self.prototypeCell = self.tableView.dequeueReusableCellWithIdentifier("Cell") as! CustomCell
}
}
extension ViewController:UITableViewDataSource
{
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Cell") as! CustomCell
configureCell(cell, forIndexPath: indexPath)
return cell
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return items.count
}
}
extension ViewController: UITableViewDelegate
{
func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
self.prototypeCell.itemLabel.text = items[indexPath.row]
self.prototypeCell.itemLabel.preferredMaxLayoutWidth = CGRectGetWidth(self.tableView.frame)
self.prototypeCell.setNeedsLayout()
self.prototypeCell.layoutIfNeeded()
let size = self.prototypeCell.contentView.systemLayoutSizeFittingSize(UILayoutFittingCompressedSize)
let height = size.height
return height
}
func tableView(tableView: UITableView, estimatedHeightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
}
CustomCell 类是UITableViewCell 的子类。它包含名为 itemLabel 的 UILabel。
【问题讨论】：
-
设置itemLabel的行数=0，换行模式为自动换行和UITableviewAutomaticDimention
-
iOS 7支持Swift吗？ -
@AechoLiu 是的
标签： ios swift uitableview