【问题标题】:i want to insert rows as section in tableview in swift3我想在 swift3 的 tableview 中插入行作为部分
【发布时间】:2017-08-31 06:57:47
【问题描述】:

我已成功在数组中追加数据,但 UITableView 没有插入和显示该数据。

但显示以下错误

由于未捕获的异常而终止应用程序 'NSInternalInconsistencyException',原因:'尝试插入第 4 行 进入第 0 节,但在第 0 节之后只有 0 行 更新”

我试过这样:

        super.viewDidLoad()

    array1=["A1","B1","C1","D1"]
    array2=["A2","B2","C2","D2"]
    array3=["A3","B3","C3","D3"]
    array4=["A4","B4","C4","D4"]
    dict1=[0:array1,1:array2,3:array3,4:array4,2:names]
    print( (dict1))
    print( (dict1[1]?.count)!)
    print(dict1.keys.count)

}
    public func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int

{
   return (((dict1)[section])!.count)
}

public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
    if tableView == tableExplore {

    cellMain = tableView.dequeueReusableCell(withIdentifier:"cellExp", for: indexPath) as! ExploreLocallyCell
    cellMain.textLabel?.textColor = UIColor(red: 194.0/255, green: 198.0/255, blue: 198.0/255, alpha: 1.0)
        cellMain.textLabel?.text=(dict1[indexPath.section])?[indexPath.row]
    }
    return cellMain

}
 public func numberOfSections(in tableView: UITableView) -> Int // Default is 1 if not implemented
{


return dict1.keys.count
}
  func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String?
{
    return (names)[section]

}

public func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
{
  self.insert(section:indexPath.section, row: indexPath.row)

}
func insert(section:Int,row:Int)
{
   print(dict1[section]!)
    // Update Table Data
    tableView.beginUpdates()
 dict1[section]!.append("BAlu")
    print(dict1[section]!)
    tableView.insertRows(at: [IndexPath(row:dict1[section]!.count-1, section: section)], with: .automatic)
    tableView.endUpdates()
    tableView.reloadData()

}

【问题讨论】:

    标签: ios uitableview swift3


    【解决方案1】:
    // No need of tableView.beginUpdates() and tableView.endUpdates() while you need to do one or two modification in UITableView 
    // While you are inserting row in table programatically then no need of tableView.reloadData() because its has no meaning to do it. You should either insert or reload. It will give you same result. Diff is reload will take more performs time then insert row. 
    
    func insert(section:Int,row:Int)
    {
        print(dict1[section]!)
        // Update Table Data
        dict1[section]!.append("BAlu")
        print(dict1[section]!)
        tableView.insertRows(at: [IndexPath(row:dict1[section]!.count-1, section: section)], with: .automatic)
    }
    
    //Or
    func insert(section:Int,row:Int)
    {
        print(dict1[section]!)
        // Update Table Data
        dict1[section]!.append("BAlu")
        print(dict1[section]!)
        tableView.reloadData()
    }
    

    【讨论】:

      猜你喜欢
      • 1970-01-01
      • 2017-05-09
      • 2010-10-16
      • 1970-01-01
      • 1970-01-01
      • 2019-12-20
      • 1970-01-01
      • 1970-01-01
      • 1970-01-01
      相关资源
      最近更新 更多