iPhone:Animation move view controller upward - iphone

Question

I am developing an iPhone application, where i need to move a first view controller slowly upward in animation and move to second view controller. I am thinking to use CoreAnimation for moving the first view controller slowly upward and push to next view controller. Could someone help on giving what are the classes/apis available to achieve this?
Thank you!

Answer 1

Try this,
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:1.0];
[UIView setAnimationTransition:UIViewAnimationTransitionNone forView:yourfirstview cache:YES];
[UIView setAnimationDidStopSelector:#selector(remove_view)];
//change frame here
yourfirstview.frame =CGRectMake(0,-480,320,480);
[UIView commitAnimations];
-(void)remove_view
{
[yourfirstview removeFromSuperview];
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:1.0];
[UIView setAnimationTransition:UIViewAnimationTransitionNone forView:yoursecondview cache:YES];
//change frame here
yoursecondview.frame =CGRectMake(0,0,320,480);
[UIView commitAnimations];
}

Answer 2

You can easily achieve this on a single view controller using multiple UIViews
As per Apple's documentation:
In iOS 4 and later, use the block-based animation methods.
So, in order to produce the intended results, using the following code.
UIView *mySecondView = [[UIView alloc] initWithFrame:CGRectMake(0, 480, 320, 480)];
[mySecondView setBackgroundColor:[UIColor redColor]];
[self.view addSubview:mySecondView];
[UIView animateWithDuration:2.0 delay:3.0 options:UIViewAnimationOptionCurveEaseInOut animations:^{
[mySecondView setTransform:CGAffineTransformMakeTranslation(0, -480)];
}completion:^(BOOL done){
}];