在Swift中使用多节TableView遇到麻烦

如果造成混淆，我事先表示歉意。我是Swift的新手，没有任何经验和学习。

基本上，我有一个UITableView，它从具有四个文本字段的另一个viewController中提取其数据。数据将保存并添加到tableView中（仅显示单元格中的两个字段）。选择单元格后，它会返回到viewController并将数据添加到适当的文本字段中。这也利用了CoreData和NSFetchResultsController。到目前为止，所有这些都工作正常，只是想对发生的事情有所了解。

问题...我试图让tableView在两部分中显示数据。我希望第一部分（第0部分）显示添加到通过在viewController上添加文本字段而创建的列表的数据。但是，tableView将第一行添加为第一部分（标题正确），然后将第二行（继续）添加为第二部分（部分1）（具有部分标题）。我想将所有来自viewController的新项目添加到第0节，当我想出如何将项目从第0节中划掉并通过选择该行移至第1节时，将第1节留为空白（将来会出现）。

我也是这个网站的新手，无法弄清楚如何发布我的代码。如果有人需要浏览它，则可能需要引导我添加它。另外，我在将Objective C转换为Swift时遇到麻烦，请在回答时记住这一点。谢谢！！我为此感到抱歉。

（tableView控制器“ SList”）

class ShoppingList: UIViewController, NSFetchedResultsControllerDelegate, UITableViewDataSource, UITableViewDelegate { 

    let moc = (UIApplication.sharedApplication().delegate as! AppDelegate).managedObjectContext

    var frc : NSFetchedResultsController = NSFetchedResultsController()

    func itemFetchRequest() -> NSFetchRequest{

        let fetchRequest = NSFetchRequest(entityName: "SList")
        let primarySortDescription = NSSortDescriptor(key: "slitem", ascending: true)
        let secondarySortDescription = NSSortDescriptor(key: "slcross", ascending: true)
        fetchRequest.sortDescriptors = [primarySortDescription, secondarySortDescription]
        return fetchRequest
    }

    func getFetchRequetController() ->NSFetchedResultsController{

        frc = NSFetchedResultsController(fetchRequest: itemFetchRequest(), managedObjectContext: moc, sectionNameKeyPath: "slitem", cacheName: nil)
        return frc
    }  

    @IBOutlet weak var tableView: UITableView!


    @IBAction func AddNew(sender: AnyObject) {

        frc = getFetchRequetController()
        frc.delegate = self

        do {
            try frc.performFetch()
        } catch _ {
            print("Failed to perform inital fetch.")
            return
        }
        self.tableView.reloadData()
    }

    override func viewDidLoad() {
        super.viewDidLoad()


        frc = getFetchRequetController()
        frc.delegate = self

        do {
            try frc.performFetch()
        } catch _ {
            print("Failed to perform inital fetch.")
            return
        }

        self.tableView.reloadData()

        //TableView Background Color
        self.tableView.backgroundColor = UIColor.clearColor()
        tableView.reloadData()
        self.navigationItem.leftBarButtonItem = self.editButtonItem()
        self.tableView.separatorColor = UIColor.blackColor()
    }

    override func viewDidDisappear(animated: Bool) {

        frc = getFetchRequetController()
        frc.delegate = self

        do {
            try frc.performFetch()
        } catch _ {
            print("Failed to perform inital fetch.")
            return
        }
        self.tableView.reloadData()
    }

    //TableView Data
    func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
        let managedObject:NSManagedObject = frc.objectAtIndexPath(indexPath) as! NSManagedObject
        moc.deleteObject(managedObject)
        do {
            try moc.save()
        } catch _ {
            print("Failed to save.")
            return
        }
    }

    func numberOfSectionsInTableView(tableView: UITableView) -> Int {

        let numberOfSections = frc.sections?.count
        return numberOfSections!
    }

    //table section headers
    func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String?{
        let sectionHeader = "Items - #\(frc.sections![section].numberOfObjects)"
        let sectionHeader1 = "Crossed Off Items - #\(frc.sections![section].numberOfObjects)"
        if (section == 0) {
            return sectionHeader
        }
        if (section == 1){
            return sectionHeader1
        }else{
        return nil
    }
    }

    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        let numberOfRowsInSection = frc.sections?[section].numberOfObjects
        return numberOfRowsInSection!
    }


    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath)
        let items = frc.objectAtIndexPath(indexPath) as! SList
        cell.backgroundColor = UIColor.clearColor()
        cell.textLabel?.text = "\(items.slitem!) - Qty: \(items.slqty!)"
        cell.textLabel?.font = UIFont.systemFontOfSize(23)

        return cell
    }
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }


    func controllerDidChangeContent(controller: NSFetchedResultsController)      {
        tableView.reloadData()
    }
    //segue to add/edit
    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {

        if segue.identifier == "edit" {

            let cell = sender as! UITableViewCell
            let indexPath = tableView.indexPathForCell(cell)
            let SListController:SLEdit = segue.destinationViewController as! SLEdit
            let items:SList = frc.objectAtIndexPath(indexPath!) as! SList
            SListController.item = items
        }
    }
}

（ViewController“ SLEdit”）

class SLEdit: UIViewController {

    let moc = (UIApplication.sharedApplication().delegate as! AppDelegate).managedObjectContext


    @IBOutlet weak var slitem: UITextField!
    @IBOutlet weak var sldesc: UITextField!
    @IBOutlet weak var slqty: UITextField!
    @IBOutlet weak var slprice: UITextField!


    var item: SList? = nil


    override func viewDidLoad() {
        super.viewDidLoad()

        if item != nil{
            slitem.text = item?.slitem
            sldesc.text = item?.sldesc
            slqty.text = item?.slqty
            slprice.text = item?.slprice
        }

        // "x" Delete Feature
        self.slitem.clearButtonMode = UITextFieldViewMode.WhileEditing
        self.sldesc.clearButtonMode = UITextFieldViewMode.WhileEditing
        self.slqty.clearButtonMode = UITextFieldViewMode.WhileEditing
        self.slprice.clearButtonMode = UITextFieldViewMode.WhileEditing
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

    func dismissVC() {
        navigationController?.popViewControllerAnimated(true)
    }

    @IBAction func saveButton(sender: AnyObject) {

        if item != nil {
            edititems()
        } else {
            createitems()
        }

        dismissVC()
    }


    func createitems() {

        let entityDescription = NSEntityDescription.entityForName("SList", inManagedObjectContext: moc)


        let item = SList(entity: entityDescription!, insertIntoManagedObjectContext: moc)

        item.slitem = slitem.text
        item.sldesc = sldesc.text
        item.slqty = slqty.text
        item.slprice = slprice.text

        if slitem.text == nil{
            createitems()

        }else{
            edititems()
        }



        do {
            try moc.save()
        } catch _ {
            return
        }
    }
    func edititems() {
        item?.slitem = slitem.text!
        item?.sldesc = sldesc.text!
        item?.slqty = slqty.text!
        item?.slprice = slprice.text!


        do {
            try moc.save()
        } catch {
            return
        }
    }
}