How to remove subviews in Objective-C?

Question

I have added UIButton and UITextView as subviews to my view programmatically.

notesDescriptionView = [[UIView alloc]initWithFrame:CGRectMake(0,0,320,460)];
notes         


        

Answer 1

I've always been surprised that the Objective-C API doesn't have a simple method for removing all sub views from a UIView. (The Flash API does, and you end up needing it quite a bit.)

Anyway, this is the little helper method that I use for that:

- (void)removeAllSubviewsFromUIView:(UIView *)parentView
{
  for (id child in [parentView subviews])
  {
    if ([child isMemberOfClass:[UIView class]])
    {
      [child removeFromSuperview];
    }
  }
}

---

EDIT: just found a more elegant solution here: What is the best way to remove all subviews from you self.view?

Am using that now as follows:

  // Make sure the background and foreground views are empty:
  [self.backgroundContentView.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
  [self.foregroundContentView.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];

I like that better.