如何在swift中設置tableview手風琴？

Question

我是IOS新手，試圖設計一個手風琴menu.i得到了stucked ..首先我讓我的UI有一些靜態內容（在表格視圖和視圖中有3行標籤..）。沒有顯示任何反應..

這裏我viewcontroller.swift

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) 
{ 
    let previndexPath = selectedIndexPath 
    if indexPath == selectedIndexPath 
    { 
     selectedIndexPath = nil 
    } 
    else 
    { 
     selectedIndexPath = indexPath 
    } 

    var indexPaths:Array <NSIndexPath> = [] 
    if let previous = previndexPath 
    { 
     indexPaths += [previous] 
    } 
    if let current = selectedIndexPath 
    { 
     indexPaths += [current] 
    } 
    if indexPaths.count > 0 
    { 
     tableView.reloadRowsAtIndexPaths(indexPaths, withRowAnimation:UITableViewRowAnimation.Automatic) 
    } 

} 


func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) { 

    (cell as! TableViewCell).watchFrameChanges() 
    (cell as! TableViewCell2).watchFrameChanges() 
} 

func tableView(tableView: UITableView, didEndDisplayingCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) 
{ 
    (cell as!TableViewCell).ignoreFrameChanges() 
    (cell as!TableViewCell2).ignoreFrameChanges() 
} 
override func viewWillDisappear(animated: Bool) 
{ 
    super.viewWillDisappear(animated) 
    for cell in tblvw.visibleCells as! [TableViewCell] { 
     cell.ignoreFrameChanges() 
    } 
    for cell in tblvw.visibleCells as! [TableViewCell2] { 
      cell.ignoreFrameChanges() 
    } 
} 

func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat { 
    if indexPath == selectedIndexPath { 
     return TableViewCell.expandedHeight 

    } else { 
     return TableViewCell.defaultHeight 

} 


    if indexPath == selectedIndexPath { 
     return TableViewCell2.expandedHeight 
    } else { 
     return TableViewCell2.defaultHeight 
    } 
    return 0.0 

} 

Answer 1

我有同樣的問題。問題是何時實現多個單元。解決辦法是：

override func viewWillDisappear(animated: Bool) { 
    super.viewWillDisappear(animated) 


    for cell in tableView.visibleCells { 

     if(cell.reuseIdentifier == "YOUR_IDENTIFIER_FROM_CELL") 
     { 
      let ncelda = cell as! TableViewCell 
      ncelda.ignoreFrameChanges() 
     } 

     else 
     { 
      let mcelda = cell as! TableViewCell2 
      mcelda.ignoreFrameChanges() 
     } 
    } 
}