IOS Swift：動畫化TableviewCell更改無法正常工作

Question

更新TableViews單元格時，我有一個相當奇怪的行爲。

來形容最簡單的方法是視頻： https://drive.google.com/open?id=0B67InGf2FEPaODFLUEhLZ29LWTg

在這裏你可以看到，我第一次嘗試展開（或摺疊）來看，該SOR的做一些事情，但不是真的。我想表達的觀點不存在，但它閃爍。

這裏是我的代碼：

class StylingTableViewController: UITableViewController { 

//MARK: properties 
var articles = [Article]() 

override func viewDidLoad() { 
    super.viewDidLoad() 

    articles.append(contentsOf: [Article(id: "Artikel 1"), Article(id: "Artikel 2")]) 

    //Let table auto layout in height 
    tableView.rowHeight = UITableViewAutomaticDimension 
    tableView.estimatedRowHeight = 100 

    // Use the edit button item provided by the table view controller. 
    navigationItem.rightBarButtonItem = editButtonItem 
} 

// MARK: - Table view data source 
override func numberOfSections(in tableView: UITableView) -> Int { 
    return 1 
} 

override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { 
    return articles.count 
} 

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { 
    // Table view cells are reused and should be dequeued using a cell identifier. 
    let cellIdentifier = "ArticleDetailCell" 

    guard let cell = tableView.dequeueReusableCell(withIdentifier: cellIdentifier, for: indexPath) as? StylingDetailTableViewCell else { 
     fatalError("The dequeued cell is not an instance of StylingDetailTableViewCell.") 
    } 

    let article = articles[indexPath.row] 
    cell.articleName.text = article.id 

    //Scrollview 
    let width:CGFloat = 90; 
    var xPos:CGFloat = 0; 
    var scrollViewContentSize:CGFloat=0; 
    for _ in 0...10{ 
     let myView:CFPictureView = CFPictureView() 
     myView.frame.size.width = 80 
     myView.frame.size.height = 120 
     myView.frame.origin.x = CGFloat(xPos) 
     xPos += width 
     cell.pictures_scrollView.addSubview(myView) 
     scrollViewContentSize += width 
     cell.pictures_scrollView.contentSize = CGSize(width: scrollViewContentSize, height: 120) 
    } 

    return cell 
} 

// Override to support editing the table view. 
override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) { 
    if editingStyle == .delete { 
     // Delete the row from the data source 
     articles.remove(at: indexPath.row) 
     tableView.deleteRows(at: [indexPath], with: .fade) 
    } else if editingStyle == .insert { 
     // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view 
    } 
} 

//MARK: Actions 
@IBAction func favButtonPressed(_ sender: UIButton) { 
    sender.isSelected = !sender.isSelected 
} 
@IBAction func expandCell(_ sender: UIButton) { 

    if let cell = sender.superview?.superview?.superview?.superview?.superview as? StylingDetailTableViewCell { 
     cell.fieldDescriptorStackView.isHidden = false; 
     cell.articleBarcode.isHidden = false; 
     cell.articleCustomerNumber.isHidden = false; 
     cell.articleStyle.isHidden = false; 
     cell.expandCellButton.isHidden = true; 
     cell.collapseCellButton.isHidden = false; 
     cell.pictures_order.isHidden = false; 
     cell.pictures_amount.isHidden = false; 
     cell.pictures_scrollView.isHidden = false; 
     cell.pictures_title.isHidden = false; 

     let indexPath = tableView.indexPath(for: cell) 
     self.tableView.reloadRows(at: [indexPath!], with: UITableViewRowAnimation.automatic) 
     (self.parent as? StylingViewController)?.topStackView.isHidden = true; 
    } 

} 
@IBAction func collapseCell(_ sender: UIButton) { 

    if let cell = sender.superview?.superview?.superview as? StylingDetailTableViewCell { 
     cell.fieldDescriptorStackView.isHidden = true; 
     cell.articleBarcode.isHidden = true; 
     cell.articleCustomerNumber.isHidden = true; 
     cell.articleStyle.isHidden = true; 
     cell.expandCellButton.isHidden = false; 
     cell.collapseCellButton.isHidden = true; 
     cell.pictures_order.isHidden = true; 
     cell.pictures_amount.isHidden = true; 
     cell.pictures_scrollView.isHidden = true; 
     cell.pictures_title.isHidden = true; 

     let indexPath = tableView.indexPath(for: cell) 
     self.tableView.reloadRows(at: [indexPath!], with: UITableViewRowAnimation.automatic) 
     (self.parent as? StylingViewController)?.topStackView.isHidden = false; 
    } 
} 
func undoAction() { 
    print("undo") 

} 

}

好像東西是錯誤的tableView.reloadRows。 幫助將不勝感激

Answer 1

可能是問題，因爲應用程序仍然不知道在第一次運行的單元格的估計高度。 修復程序可能是通過增加這對viewDidLoad中：

tableView.estimatedRowHeight = 60 
tableView.rowHeight = UITableViewAutomaticDimension