Ich habe UITableView mit vielen Abschnitten und Zeilen. Abschnitte funktionieren gut. Aber manchmal nach dem erneuten Laden von Daten der Tabelle, Abschnitt Position ändern. Zum Beispiel war es passiert, als ich die Tabs wechselte. Woran könnte das liegen?

Bild vor geänderten Tabs:

Bild nach geänderten Tabs:

Aktualisieren Code unten hinzufügen:

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

    self.dishesListTableView.reloadData()
}

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


func customizeCollectionView() {
    self.collectionView.delegate = self
    self.collectionView.dataSource = self
    self.collectionView.dataProviderDelegate = self.dishesListDataProvider
    self.collectionView.showsHorizontalScrollIndicator = false
    self.collectionView.decelerationRate = UIScrollViewDecelerationRateFast
    self.collectionView.registerClass(HPCollectionViewCell.self, forCellWithReuseIdentifier: HPCollectionViewCellConstants.reuseIdentifier)
}

//MARK: - UITableViewDelegate
func customziseDishesListTableView(){
    self.dishesListTableView.delegate = self
    self.dishesListTableView.dataSource = self

    self.dishesListTableView.registerNib(UINib(nibName: DishesListSingleTableViewCell.nibName, bundle: nil), forCellReuseIdentifier: DishesListSingleTableViewCell.nibName)
    self.dishesListTableView.registerNib(UINib(nibName: DishesListSinglePizzaTableViewCell.nibName, bundle: nil), forCellReuseIdentifier: DishesListSinglePizzaTableViewCell.nibName)

    self.dishesListTableView.estimatedRowHeight = 123
    self.dishesListTableView.rowHeight = UITableViewAutomaticDimension

    if self.dishesListDataProvider.isPizza() {
        self.dishesListTableView.separatorColor = UIColor.clearColor()
    }else{
        self.dishesListTableView.separatorColor = UIColor.expSilverColor()
    }
}

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return self.dishesListDataProvider.countOfDishes(section)
}

func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    return self.dishesListDataProvider.countOfKitchenTypes()
}

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    if self.dishesListDataProvider.getDishItemByIndex(indexPath.section, indexDish: indexPath.row).isPizza() {
        let cell = tableView.dequeueReusableCellWithIdentifier(DishesListSinglePizzaTableViewCell.nibName, forIndexPath: indexPath) as! DishesListSinglePizzaTableViewCell
        cell.customizeView(self.dishesListDataProvider.getDishItemByIndex(indexPath.section, indexDish: indexPath.row), dishesListSingleTableViewCellProtocol: self, indexPath: indexPath)
        return cell
    }else{
        let cell = tableView.dequeueReusableCellWithIdentifier(DishesListSingleTableViewCell.nibName, forIndexPath: indexPath) as! DishesListSingleTableViewCell

        cell.customizeView(self.dishesListDataProvider.getDishItemByIndex(indexPath.section, indexDish: indexPath.row), dishesListSingleTableViewCellProtocol: self, indexPath: indexPath)
        return cell
    }
}

func tableView(tableView: UITableView, willDisplayFooterView view: UIView, forSection section: Int) {
    self.collectionView.scrollToIndex(section, animated: true)
    self.collectionView.changeSelectionForCellAtIndexPath(NSIndexPath(forItem: section, inSection: 0))
}

func tableView(tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
    let sectionView = NSBundle.mainBundle().loadNibNamed(DishesListSectionView.nibName, owner: self, options: nil)[0] as! DishesListSectionView

    sectionView.customizeView(self.dishesListDataProvider.getKitchenItemByIndex(section).kitchenTypeTitle)

    return sectionView
}
//MARK: - UIScrollViewDelegate
func scrollViewDidScroll(scrollView: UIScrollView) {
    if currentSectionIndex != self.dishesListTableView.indexPathsForVisibleRows![0].section {
        currentSectionIndex = self.dishesListTableView.indexPathsForVisibleRows![0].section
        self.collectionView.scrollToIndex(currentSectionIndex, animated: true)
        self.collectionView.changeSelectionForCellAtIndexPath(NSIndexPath(forItem: currentSectionIndex, inSection: 0))
    }

}