iPhone/iOS: Will there be called any method if a UIView is added as a subview

Question

If I add a view as a subview like so

[self.view addSubview:mySubview];

Will there be called any method on mySubview, that I could override to add some custom behavior?

score 28 · Accepted Answer · answered May 28 '11 at 14:28

28

Adding a view to a (new) superview triggers

- (void)willMoveToSuperview:(UIView *)newSuperview

and

- (void)didMoveToSuperview.

See the UIView Reference for more.

answered May 28 '11 at 14:28

Till

Thanks for the very quick response. I will kind of stupid, that I havent noticed the method right away myself... – Pascal Klein May 28 '11 at 14:33
2

Good stuff! Learned something new +1 – Sid Jun 01 '11 at 16:37

score 3 · Answer 2 · answered May 28 '11 at 14:28

3

You can override these two:

- (void)willMoveToSuperview:(UIView *)newSuperview
- (void)didMoveToSuperview

Take a look in the documentation for UIView for similar methods.

answered May 28 '11 at 14:28

Tom Irving

score 3 · Answer 3 · answered May 28 '11 at 14:30

Yes, There is a method which get called if one change the superview . you need to override the below method in your subview class.

- (void)willMoveToSuperview:(UIView *)newSuperview
- (void)didMoveToSuperview

From UIView Doucumentation

willMoveToSuperview:, didMoveToSuperview—Implement these methods as needed to track the movement of the current view in your view hierarchy.

score 0 · Answer 4 · answered Jan 21 '12 at 12:02

0

exep for special purpose is far better to customize you view in init phase, you have all you need and (more important) is a synchronous call.

answered Jan 21 '12 at 12:02

ingconti

4 Answers4