iPhone SDK中子视图的动画

Question

haii i have 5 subviews in a viewcontroller,each subvies are shown when corresponding button are clicked.But normally when i button is clicked,it shows the subview without animating or tansistion .I need to give a effect for the subview when it popup. i tried this but no luck

[UIView beginAnimations:@"page transition" context:nil];
    [UIView setAnimationDuration:1.0];
    [UIView setAnimationTransition: UIViewAnimationTransitionCurlUp forView:NoteView cache:YES];

    [self.view addSubview:NoteView];

in button click.is there any way to animate like this.

Answer 1

You forgot to add commitAnimation method

[UIView beginAnimations:@"page transition" context:nil];
[UIView setAnimationDuration:1.0];
[UIView setAnimationTransition: UIViewAnimationTransitionCurlUp forView:NoteView cache:YES];

[self.view addSubview:NoteView];
[UIView commitAnimation];

Answer 2

you should be using blocks for animation, look at

transitionFromView:toView:duration:options:completion:

in UIView, with UIViewAnimationOptionTransitionCurlUp as one of the option masks