Question

I have a normal Interace in interface builder (there’s a UILabel and a UIButton). In code, I create a UIScrollView with a (unknown) number of UILabels (depends by the User). These labels are created in - (void)viewWillAppear to make sure the data is up to date. To remove the labels, in viewWillDisappear i’m calling

for(UIView *subview in [scrollView  subviews])
{
    [subview removeFromSuperview];
}

The problem is, after the view get’s called again, the Objects created with interfacebuilder (the UILabel & UIButton) disappear. Do the get removed by calling [subview removeFromSuperview];? If yes, how to add them again? Everything which is created by code is still there…

Answer 1

you should add tag to your labels that you add dynamically.

for(int i = 0; i < n; i++){
  UILabel *label = [UILabel alloc...];
  label.tag = 999999;
}

then.

for(UIView *subview in [scrollView  subviews])
{
   if([subview isKindOfClass:[UILabel class]] && subview.tag == 999999){
    [subview removeFromSuperview];
   }
}