将阴影添加到分组表视图中的每个部分

1 回答

• 2

  我尝试过自定义 [String : UIView] . 这将适用于最小行数 . 如果您的单元设计是静态的，这将满足您的设计 . 如果要访问 UITableViewCell 内的某些属性，则必须使用子视图 .

  • 只有一行的多个部分 . 相应行中只有一个视图（ lookView ） .

  • 我们必须根据需要以编程方式创建n个 UIView .

  • UITapGesture 至 TableView . TableView 格式为 Grouped ， Separator 为 .none .

  以下代码将给出如下输出：

  

  //Global Variable:
  
  
  @IBOutlet weak var tblVw: UITableView!
  
  var rowItemsDict = [String : [String]]()
  var rowHeight = [String : CGFloat]()
  var eachRowSubViews = [String : UIView]()
  
  
  override func viewDidAppear(_ animated: Bool) {
  
      rowItemsDict = ["0" : ["welcome", "hello", "wow", "Good", "Bad"], "1" : ["Asia", "Europe", "America"], "2" : ["Mcdonald", "Pizza", "Fries"]]
  
      for i in 0..<rowItemsDict.count
      {
          let numOfSubItemsArr : [String] = rowItemsDict[String(i)]!
          let eachRowHeight : CGFloat = getShadowViewHeight(defaultHeight: 44.0, numberOfItems: numOfSubItemsArr.count)
  
          var subArrView = UIView()
  
          for j in 0..<numOfSubItemsArr.count
          {
              let sublabel = UILabel(frame: CGRect(x: 0, y: 0, width: tblVw.frame.size.width - 42, height: 39))
              sublabel.text = numOfSubItemsArr[j]
              sublabel.isUserInteractionEnabled = true
              sublabel.textAlignment = .right
              sublabel.textColor = UIColor.red
              let subView = UIView(frame: CGRect(x: 0, y: CGFloat((j * 40)), width: tblVw.frame.size.width, height: 39))
              subView.addSubview(sublabel)
              subView.backgroundColor = UIColor.clear
              subView.tag = ((i+1) * 100) + j
  
              if j == (numOfSubItemsArr.count - 1)
              {
  
              }
              else
              {
                  let LinesubView = UIView(frame: CGRect(x: 0, y: 38, width: tblVw.frame.size.width - 8, height: 1))
                  LinesubView.backgroundColor = UIColor.lightGray.withAlphaComponent(0.2)
                  subView.addSubview(LinesubView)
              }
  
              subView.isUserInteractionEnabled = true
              subArrView.addSubview(subView)
              subArrView.isUserInteractionEnabled = true
          }
  
          eachRowSubViews[String(i)] = subArrView
          rowHeight[String(i)] = eachRowHeight
      }
  
      let tapGesture = UITapGestureRecognizer(target: self, action: #selector(tapEachView))
      tblVw.addGestureRecognizer(tapGesture)
      tblVw.reloadData()
  }
  
  
  // TABLEVIEW DELEGATES
  func numberOfSections(in tableView: UITableView) -> Int {
  
  
      return rowItemsDict.count
  }
  
  func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
  
      return 1
  }
  func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
  
      let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! SampleTableViewCell
  
      print("\n\ncellFor")
      cell.backgroundColor = UIColor(red: 240/255, green: 240/255, blue: 240/255, alpha: 0.0)
      cell.separatorVw.backgroundColor = UIColor(red: 250/255, green: 250/255, blue: 250/255, alpha: 0.0)
      tableView.clipsToBounds = true
      let gettingVw : UIView = eachRowSubViews[String(indexPath.section)]!
      cell.lookVw.addSubview(gettingVw)
      cell.lookVw.layer.cornerRadius = 10
      cell.separatorVw.backgroundColor = UIColor.clear
  
      cell.selectionStyle = .none
      return cell
  }
  
  
  func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
  
      let cell = cell as! SampleTableViewCell
  
      cell.lookVw.dropOnlyOneShadowLeft(getSize: CGSize.zero)
      cell.lookVw.backgroundColor = UIColor.white
  
  
  }
  
  func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
  
      return (rowHeight[String(indexPath.section)]! )
  
  }
  
  
  //ROW HEIGHT CALCULATION
  func getShadowViewHeight(defaultHeight: CGFloat, numberOfItems: Int) -> CGFloat
  {
      let requiredHeight = CGFloat(Int(defaultHeight) * numberOfItems)
  
      return requiredHeight
  }
  
  //TAP GESTURE ACTION
  @objc func tapEachView(sender: UITapGestureRecognizer)
  {
      let touchPoint = sender.location(in: tblVw)
      let index = tblVw.indexPathForRow(at: touchPoint)
  
      if (index == nil)
      {
              print("long press on table view but not on a row");
      }
      else
      {
          let cell = tblVw.cellForRow(at: index!) as! SampleTableViewCell
          let pointInCell = cell.convert(touchPoint, from: tblVw)
  
          let innerSubVw = cell.lookVw.subviews
          print("pointInCellpointInCell)  ", pointInCell)
          for sVw in innerSubVw[0].subviews
          {
              let pointY = pointInCell.y - 5
              let comparePoint = sVw.frame.origin.y
  
              if pointY >= comparePoint && pointY <= comparePoint + 39
              {
                  print("sVwsVwsVwsVwsVw    ", sVw.tag)
  
                  //DO YOUR ACTION IN RESPECTIVE VIEW CLICK
                  return
              }
  
          }
  
      }
  }
  
  
  extension UIView {
      func dropOnlyOneShadowLeft(getSize: CGSize) {
          self.layer.shadowColor = UIColor.lightGray.cgColor
          self.layer.shadowOpacity = 0.6
          self.layer.shadowOffset = getSize
          self.layer.shadowRadius = 3
      }
  }
  

  回复于 2024-05-01T22:50:39+08:00