如何在swift中展开UITableview单元而不折叠其他单元格（多单元格扩展）

2 回答

• 0

  经过太多的工作，我得到了扩展多个细胞的解决方案，所以我在这里分享帮助别人..

  对于扩展单元格，你必须在单击单元格时将indexPath存储在数组中，然后在tableview委托方法中使用该数组作为高度 . 我的代码如下 .

  var selectedIndexPath : NSIndexPath?
  var indexPaths : Array<NSIndexPath> = []
  override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
      selectedIndexPath = indexPath
      if !indexPaths.contains(selectedIndexPath!){
              indexPaths += [selectedIndexPath!]
      }
      else {
          let index = indexPaths.indexOf(selectedIndexPath!)
          indexPaths.removeAtIndex(index!)
      }
      tableView.beginUpdates()
      tableView.endUpdates()
  }
  override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
      if indexPaths.count>0 {
          if indexPaths.contains(indexPath){
              return 200
          }
          else {
              return 50
          }
      }
        return 50
  }
  

  回复于 2024-04-27T01:48:01+08:00
• 3

  创建一个名为UITableViewController的TableViewController子类的新文件，并从storyboard中获取UITableViewController，并从Xcode的Identity Inspector中分配类TableViewController，并将单元标识符命名为“Cell” . 然后实现下面的类：

  class TableViewController: UITableViewController {
  
  var groupArray = [String]()
  var boolArray : [String]!
  var dataDic = [String : [String]]()
  override func viewDidLoad() {
   super.viewDidLoad()
  groupArray = ["A","B","C"]
  boolArray = [String](count: groupArray.count, repeatedValue: "0")
  let groupA = ["CELL ONE","CELL TWO","CELL THREE","CELL FOUR","CELL FIVE"]
  let groupB = ["CELL ONE","CELL TWO","CELL THREE","CELL FOUR","CELL FIVE"]
  let groupC = ["CELL ONE","CELL TWO","CELL THREE","CELL FOUR","CELL FIVE"]
  dataDic["A"] = groupA
  dataDic["B"] = groupB
  dataDic["C"] = groupC
  
  }
  
  override func numberOfSectionsInTableView(tableView: UITableView) -> Int{
     return groupArray.count
  }
  
  override func tableView(tableView: UITableView, numberOfRowsInSection section:   Int) -> Int{
   let boolForSec = boolArray[section] as String
   if (Int(boolForSec) != 0) {
     var arr = dataDic[groupArray[section]]
     return arr!.count
   }else {
     return 0
   }
  }
  
  override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell{
  
   let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath:  indexPath) as! UITableViewCell
  
   let boolForSec = boolArray[indexPath.section] as String
   if (Int(boolForSec) != 0) {
     var arr : [String] = dataDic[groupArray[indexPath.section]]!
     cell.textLabel?.text = arr[indexPath.row] as String
   }else {
  
   }
  
   // cell.textLabel?.text = "row \(indexPath.row)"
   return cell
  }
  
   override func tableView(tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
  
    return 50
   }
  
   override func tableView(tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
     return 1
   }
  
   override func tableView(tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
  
      let headerView = UIView(frame: CGRectMake(0, 0, tableView.frame.size.width, 40))
     headerView.backgroundColor = UIColor.blueColor()
     headerView.tag = section
  
    let headerString = UILabel(frame: CGRect(x: 10, y: 10, width:     tableView.frame.size.width-10, height: 30)) as UILabel
    headerString.text = groupArray[section] as String
    headerView .addSubview(headerString)
  
    let headerTapped = UITapGestureRecognizer (target: self,    action:"sectionHeaderTapped:")
     headerView .addGestureRecognizer(headerTapped)
  
        return headerView
    }
  
    func sectionHeaderTapped(tapped: UITapGestureRecognizer){
  
       let section = tapped.view?.tag
       let boolForSec = boolArray[section!] as String
        if (Int(boolForSec) != 0) {
           boolArray[section!] = "0"
  
        }else {
           boolArray[section!] = "1"
  
        }
  
     tableView.reloadSections(NSIndexSet(index: section!), withRowAnimation:  UITableViewRowAnimation.Fade)
      }
  
       override func didReceiveMemoryWarning() {
          super.didReceiveMemoryWarning()
          // Dispose of any resources that can be recreated.
       }
  
    }
  

  回复于 2024-04-27T01:48:01+08:00