Scrolling UITableView in iOS 9 results in overlapped labels

Question

After upgrading to Xcode 7 and iOS 9 beta, I am getting this error in one of my UITableViews. Whenever I scroll, my second label overlaps the first label in most of the cells. What is weird is that two of the current cells don't have this issue. See pictures for details.

 override func viewDidAppear(animated: Bool) {

    namesArray.removeAll(keepCapacity: false)
    locationsArray.removeAll(keepCapacity: false)


    let query = PFQuery(className: "Schools")
    // query.whereKey(key: String, containedIn: [AnyObject])

    query.findObjectsInBackgroundWithBlock { (objects: [AnyObject]?, error: NSError?) -> Void in
        if error == nil {
            query.orderByAscending("schoolName")

            if let objects = query.findObjects() as? [PFObject] {

                for object in objects {

                    self.namesArray.append(object.valueForKey("schoolName") as! String)
                    self.locationsArray.append(object.valueForKey("schoolLocation") as! String)   
                    self.schoolTable.reloadData()
                }
            }
        } else {
            print("Shit, it didn't work...")
        }
    }
}

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

    let cell:ChangeSchoolListTableViewCell = tableView.dequeueReusableCellWithIdentifier("Cell") as! ChangeSchoolListTableViewCell

    if namesArray.count > 0 {
        cell.nameLabel.text = namesArray[indexPath.row]
        cell.locationLabel.text = locationsArray[indexPath.row]
    }
    return cell
}

class ChangeSchoolListTableViewCell: UITableViewCell {

@IBOutlet var nameLabel: UILabel!
@IBOutlet var locationLabel: UILabel!

override func awakeFromNib() {
    super.awakeFromNib()
    // Initialization code
}

override func setSelected(selected: Bool, animated: Bool) {
    super.setSelected(selected, animated: animated)

    // Configure the view for the selected state
}
}

Thank you very much.

Can you add a screen short with constrains you are using in the cell? — Andrew Romanov, Sep 08 '15 at 12:52
@AndrewRomanov I have the same problem, did you fix it? Thanks a lot. — Ricardo, Oct 20 '15 at 08:25
No, I've not. But I can try find the solution if you share example project with it problem (I can't reproduce the problem). — Andrew Romanov, Oct 20 '15 at 10:40

score 0 · Answer 1 · answered Sep 06 '15 at 18:37

0

I think you are adding one label over another in the table. You need to add one label and reuse it instead of adding another label. The solution is to use a custom UITableViewCell subclass. Also it will be helpful if you show the code of UITableView methods.

answered Sep 06 '15 at 18:37

Fawad Masud

11,427
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I added the relevant code. They are two separate labels, and it is using a custom class. How would I use one label and reuse it? Can you take me through that, i've never done that before / had the need to. – Anthony Saltarelli Sep 06 '15 at 23:09
Please show your ChangeSchoolListTableViewCell class. – Fawad Masud Sep 07 '15 at 05:21

score 0 · Answer 2 · edited May 23 '17 at 11:44

0

I think, you call reloadData from a background thread. If it is so, then it is a main problem, to solve it, you should call reloadData from the main thread. You can see here how to call a block of code on the main thread from the background thread.

edited May 23 '17 at 11:44

Community

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answered Sep 08 '15 at 12:46

Andrew Romanov

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I am not sure what this means. Also, I have basically an identical view controller and class that presents the same data, and it is not presenting a problem. – Anthony Saltarelli Sep 08 '15 at 14:42

score 0 · Answer 3 · edited Sep 25 '15 at 05:03

0

You need to remove subviews of uitableviewcell's contentview before adding subviews.

edited Sep 25 '15 at 05:03

Nazik

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answered Sep 24 '15 at 05:47

Iya

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Scrolling UITableView in iOS 9 results in overlapped labels

3 Answers3