ios - 部分错误 Swift 中的行数

Question

我有一个带有两个自定义单元格 xib 的表格 View 。

第一个 xib 仅包含 uilabel，第二个仅包含 uibutton。

单击 ui 按钮后，将附加 someTagsArray(我在 numberOfRows 函数中用于计数的数组)并应插入新行，但我却遇到了这个讨厌的错误

Invalid update: invalid number of rows in section 0. The number of rows contained in an existing section after the update (8) must be equal to the number of rows contained in that section before the update (4), plus or minus the number of rows inserted or deleted from that section (0 inserted, 0 deleted) and plus or minus the number of rows moved into or out of that section (0 moved in, 0 moved out).

这是我的代码(numberOfRowsInSection)

     func tableView(tableView: UITableView, numberOfRowsInSection section: Int) ->    
Int {
        return someTagsArray.count + 1
    }

cellForRowAtIndexPath

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell     {

        if(indexPath.row < someTagsArray.count){
            var cell:TblCell = self.tableView.dequeueReusableCellWithIdentifier("cell") as! TblCell

            cell.lblCarName.text = linesmain["start"]![indexPath.row]

            return cell

        } else {
          var celle:vwAnswers = self.tableView.dequeueReusableCellWithIdentifier("cell2") as! vwAnswers
            celle.Answer1.setTitle(answersmain["start"]![0], forState:UIControlState.Normal)

// answertitle is a global string variable                

            answertitle1 = "\(celle.Answer1.currentTitle!)"

            return celle

        }}

最后是导致应用崩溃的函数代码

func insertData(){

// appending the array to increase count

    someTagsArray += linesmain[answertitle1]!

    tableView.beginUpdates()
    let insertedIndexPathRange = 0..<self.linesmain[answertitle2]!.count-4
    var insertedIndexPaths = insertedIndexPathRange.map { NSIndexPath(forRow: $0, inSection: 0) }
    tableView.insertRowsAtIndexPaths(insertedIndexPaths, withRowAnimation: .Fade)

    tableView.endUpdates()
}

谢谢你们。

Answer 1

尝试使用此代码插入行:

func insertData(){

    let initialCount = someTagsArray.count as Int
    let newObjects = linesmain[answertitle1] as! NSArray

    // appending the array to increase count        
    //someTagsArray += newObjects
    someTagsArray.addObjectsFromArray(newObjects)


    self.tableView!.beginUpdates()

    var insertedIndexPaths: NSMutableArray = []

    for var i = 0; i < newObjects.count; ++i {
        insertedIndexPaths.addObject(NSIndexPath(forRow: initialCount+i, inSection: 0))
    }

    self.tableView?.insertRowsAtIndexPaths(insertedIndexPaths as [AnyObject], withRowAnimation: .Fade)

    self.tableView!.endUpdates()
}