viewDidDisappear for UIView

Question

I've added a sub view like this in the main view:

    BTLPXYPad *XYPad = [[BTLPXYPad alloc] initWithFrame: CGRectMake (30, 10, 280, 460)];
    [window addSubview:XYPad];

done all my bits that i need to and then removed it using this in the BTLPXYPad class:

    [self removeFromSuperview];

What I need is to perform a task once it has gone. I know that with a UIViewController type class I could use viewDidDissapear but I can't seem to find the same thing for a UIView Type. Can anyone help please?

Answer 1

To know when you a view has actually been removed you could implement didMoveToSuperview and check if the superview is now nil

- (void)didMoveToSuperview;
{
  [super didMoveToSuperview];

  if (!self.superview) {
    NSLog(@"Removed from superview");
  }
}