A function that'll throw a label on a cell with it's index path. Useful for debugging weird layouts.

showIndexPathsOnCells.m

-(void)showIndexPath:(NSIndexPath*)indexPath inView:(UIView*)view{
    
    UILabel *lbl = [[UILabel alloc] init];
    lbl.text = [NSString stringWithFormat:@"%ld-%ld", (NSUInteger)indexPath.section, (NSUInteger)indexPath.item];
    lbl.font = [UIFont systemFontOfSize:8.f];
    lbl.numberOfLines = 0;
    
    lbl.backgroundColor = [UIColor blackColor];
    lbl.textColor = [UIColor whiteColor];
    
    [lbl sizeToFit];
    
    [view addSubview:lbl];
    
    NSMutableArray *constraints = [NSMutableArray array];
    
    [constraints addObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-[lbl(10)]" options:NSLayoutFormatAlignAllLeft metrics:nil views:@{@"lbl":lbl}]];
    [constraints addObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"V:[lbl(10)]-|" options:NSLayoutFormatAlignAllLeft metrics:nil views:@{@"lbl":lbl}]];
    
    [NSLayoutConstraint activateConstraints:constraints];
    
}