UISegment stays at same row when tableview get scrolled - ios

Question

I have this problem, I have a tableview with 3 different kind of news manage by segmented control. When I scrolled the news stays for example in the fifth new, if I click in the second segment, appears in the position 5 . Is not showing the news from the segment 1(the new one),at row 0 (beginning) , stays in the position I leave when I was scrolling. Why is happening this? what I'm doing wrong?. I'm using one tableview for the 3 different kinds of news and reload the tableview data every time I change the segment.
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
NSLog("selectedSegmentIndex: \(self.sectionSegmentedControl.selectedSegmentIndex) - Row: \(indexPath.row)")
let cell:UITableViewCell = self.tableview.dequeueReusableCellWithIdentifier("Cell")!
// Grab the elements using the tag
let labelTitle:UILabel? = cell.viewWithTag(1) as! UILabel?
let labelSection:UILabel? = cell.viewWithTag(2) as! UILabel?
let labelDate:UILabel? = cell.viewWithTag(3) as! UILabel?
let imageView:UIImageView? = cell.viewWithTag(4) as! UIImageView?
// Check which segment to get data from
switch self.sectionSegmentedControl.selectedSegmentIndex {
case 0:
// If segment is 0, take data from cover News
if (indexPath.row <= self.coverNews.count - 1){
//Current new to display
let currentNewToDisplay = self.coverNews[indexPath.row]
//let currentNewToDisplay = self.news[indexPath.row]
// Get the image and assign to the imageView
if let actualImageView = imageView {
// Imageview actually exists
if currentNewToDisplay.imageUrl != "" {
// Image url exists, so download it
let imageUrl:NSURL? = NSURL(string: currentNewToDisplay.imageUrl)
// Download image with SDWebImage library
if let url = imageUrl {
actualImageView.sd_setImageWithURL(url)
}
}
}
// Get the news title and assign to the label
if let actualLabelTitle = labelTitle {
let title = currentNewToDisplay.title
actualLabelTitle.text = title
actualLabelTitle.numberOfLines = 0
actualLabelTitle.minimumScaleFactor = 0.1
}
// Get the news date and assign to the label
if let actualLabelDate = labelDate {
let character = "| "
actualLabelDate.text = character + currentNewToDisplay.date_short
}
// Get the news section and assign to the label
if let actualabelSection = labelSection {
actualabelSection.text = currentNewToDisplay.section
}
}
case 1:
// If segment is 1, take data from toprated News
if (indexPath.row <= self.topratedNews.count - 1){
let currentNewToDisplay2 = self.topratedNews[indexPath.row]
// Get the image and assign to the imageView
if let actualImageView2 = imageView {
// Imageview actually exists
if currentNewToDisplay2.imageUrl != "" {
// Image url exists, so download it
let imageUrl2:NSURL? = NSURL(string: currentNewToDisplay2.imageUrl)
// Download image with SDWebImage library
if let url2 = imageUrl2 {
actualImageView2.sd_setImageWithURL(url2)
}
}
}
// Get the news title and assign to the label
if let actualLabelTitle2 = labelTitle {
actualLabelTitle2.text = currentNewToDisplay2.title
actualLabelTitle2.numberOfLines = 0
actualLabelTitle2.minimumScaleFactor = 0.1
}
// Get the news date and assign to the label
if let actualLabelDate2 = labelDate {
let character2 = "| "
actualLabelDate2.text = character2 + currentNewToDisplay2.date_short
}
// Get the news section and assign to the label
if let actualabelSection2 = labelSection {
actualabelSection2.text = currentNewToDisplay2.section
}
}
case 2:
if (indexPath.row <= self.latestNews.count - 1){
// If segment is 2, take data from latestNews News
let currentNewToDisplay3 = self.latestNews[indexPath.row]
// Get the image and assign to the imageView
if let actualImageView3 = imageView {
// Imageview actually exists
if currentNewToDisplay3.imageUrl != "" {
// Image url exists, so download it
let imageUrl3:NSURL? = NSURL(string: currentNewToDisplay3.imageUrl)
// Download image with SDWebImage library
if let url3 = imageUrl3 {
actualImageView3.sd_setImageWithURL(url3)
}
}
}
// Get the news title and assign to the label
if let actualLabelTitle3 = labelTitle {
actualLabelTitle3.text = currentNewToDisplay3.title
actualLabelTitle3.numberOfLines = 0
actualLabelTitle3.minimumScaleFactor = 0.1
}
// Get the news date and assign to the label
if let actualLabelDate3 = labelDate {
let character3 = "| "
actualLabelDate3.text = character3 + currentNewToDisplay3.date_short
}
// Get the news section and assign to the label
if let actualabelSection3 = labelSection {
actualabelSection3.text = currentNewToDisplay3.section
}
}
default:
break
}
// Set insets to zero
cell.layoutMargins = UIEdgeInsetsZero
return cell
}
// MARK: Segmented Control
#IBAction func segmentedChanged(sender: UISegmentedControl) {
switch self.sectionSegmentedControl.selectedSegmentIndex {
case 0:
// If segment is 0, return rows for coverNews array
if (self.coverNews.count == 0) {
loadNews()
}else{
dispatch_async(dispatch_get_main_queue(), {
self.tableview.reloadData()
})
}
case 1:
// If segment is 1, return rows for topratedNews array
if (self.topratedNews.count == 0) {
loadNews()
}else{
dispatch_async(dispatch_get_main_queue(), {
self.tableview.reloadData()
})
}
case 2:
// If segment is 2, return rows for latestNews array
if (self.latestNews.count == 0) {
loadNews()
}else{
dispatch_async(dispatch_get_main_queue(), {
self.tableview.reloadData()
})
}
default:
break
}
}
// MARK: Load News
func loadNews(){
switch(sectionSegmentedControl.selectedSegmentIndex){
case 0:
self.model.getFeedNews("cover")
case 1:
self.model.getFeedNews("toprated")
case 2:
self.model.getFeedNews("latest")
default:
break
}
}