UITableViewCell Separator disappearing in iOS7

I have some strange issue with UITableView only in iOS 7.

UITableViewCellSeparator disappears above the first row and below the last row. Sometimes after selecting the rows or some scrolling actions it appears.

In my case tableView is loaded from the Storyboard with UITableViewStylePlain style. The problem is surely not in UITableViewCellSeparatorStyle, which is not changed from default UITableViewCellSeparatorStyleSingleLine.

As I read at Apple Dev Forums (here and here) other people have such problem and some workarounds are found, for example:

Workaround: disable the default selection and recreate the behaviour in a method
trigged by a tapGestureRecognizer.

But I am still searching for the reason of such separator strange behaviour.

Any ideas?

Update: As I saw in XCode 5.1 DP and iOS 7.1 beta, Apple tried to fix this problem. Now separator is shown as needed sometimes below the last row, after some refreshing, but not after tableview creation.

I dumped the subview hierarchy of affected cells and found that the _UITableViewCellSeparatorView was set to hidden. No wonder it's not shown!

I overrode layoutSubviews in my UITableViewCell subclass and now the separators are displayed reliably:

Objective-C:

- (void)layoutSubviews {
    [super layoutSubviews];

    for (UIView *subview in self.contentView.superview.subviews) {
        if ([NSStringFromClass(subview.class) hasSuffix:@"SeparatorView"]) {
            subview.hidden = NO;
        }
    }
}

Swift:

override func layoutSubviews() {
    super.layoutSubviews()

    guard let superview = contentView.superview else {
        return
    }
    for subview in superview.subviews {
        if String(subview.dynamicType).hasSuffix("SeparatorView") {
            subview.hidden = false
        }
    }
}

The other solutions proposed here didn't work consistently for me or seem clunky (adding custom 1 px footer views).

This worked for me:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    // fix for separators bug in iOS 7
    self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
    self.tableView.separatorStyle = UITableViewCellSeparatorStyleSingleLine;

I also had the problem with missing separator and I found out that the problem only occured when heightForRowAtIndexPath was returning a decimal number. Solution:

override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
    return ceil(yourHeight) // Ceiling this value fixes disappearing separators
}

Did you try adding a UIView of height 1 in the header and the footer of the table with light gray background color? Basically it'll mock the first and last separators.

@samvermette

I fixed the problem by using this delegate methods. Now it doesn't flicker:

-(void)tableView:(UITableView *)tableView didHighlightRowAtIndexPath:(NSIndexPath *)indexPath {
    // fix for separators bug in iOS 7
    tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
    tableView.separatorStyle = UITableViewCellSeparatorStyleSingleLine;
}


-(void)tableView:(UITableView *)tableView didUnhighlightRowAtIndexPath:(NSIndexPath *)indexPath {
    // fix for separators bug in iOS 7
    tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
    tableView.separatorStyle = UITableViewCellSeparatorStyleSingleLine;
}