How Do I Make A Flip Animation? - iphone

Question

My animation currently animates my new view to come in from the bottom. I would rather have it do a horizontal flip instead.
How can I edit my code to result in this? Thanks.
-(void) aboutButtonPressed
{
[aboutView setFrame:CGRectMake(0, self.view.frame.size.height, self.view.frame.size.width, self.view.frame.size.height)];
[self.view addSubview:aboutView];
[UIView animateWithDuration:.5 animations:^{
[aboutView setFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
}];
}
Update:
#interface AboutViewController : UIViewController {
NSMutableArray *array1;
NSMutableArray *array2;
}
#property (nonatomic, retain) IBOutlet UITableView *aboutTableView;
#property (nonatomic, retain) IBOutlet UINavigationBar *navBar;
#property (nonatomic, retain) IBOutlet UIBarButtonItem *doneButton;
#property (nonatomic, retain) NSArray *array1;
#property (nonatomic, retain) NSArray *array2;

Answer 1

I think the flip animation you are desiring comes from presentModalViewController:animated: which can be found in the UIViewController Documentation
What you would want is to turn your aboutView into a AboutViewController:
-(void) aboutButtonPressed
{
AboutViewController *viewController = [[AboutViewController alloc] initWithNibName:#"AboutViewController" bundle:nil];
viewController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
viewController.delegate = self;
[self presentModalViewController:viewController animated:YES];
[viewController release];
}

Answer 2

Use the method:
[UIView animateWithDuration:delay:options:animations:completion:]
for example:
[UIView animateWithDuration:0.5
delay:0.0
options:UIViewAnimationOptionTransitionFlipFromLeft
animations:^{
[aboutView setFrame:CGRectMake(0, 0, self.view.frame.size.width,
self.view.frame.size.height)];
}
completion:nil]
More on that in the UIView docs: http://developer.apple.com/library/ios/#documentation/uikit/reference/UIView_Class/UIView/UIView.html