UIView的动画

一种方法是利用封装了CATransition的UIView类方法来实现，这方法简单但效果少。

    //把子视图从父视图里删除的动画效果
    [UIView beginAnimations:@"animation_" context:nil];
    [UIView setAnimationDuration:1.25];
    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
    
    UIViewController * coming = [[UIViewController alloc] init];
    UIViewController * going = [[UIViewController alloc] init];
    coming.view = self.view.superview;
    going.view = self.view;
    
    [UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.view.superview cache:YES];
    
    [coming viewWillAppear:YES];
    [going viewWillDisappear:YES];
    [going.view removeFromSuperview];
    [going viewDidDisappear:YES];
    [coming viewDidAppear:YES];
    
    [UIView commitAnimations];
    
    [coming release];
    [going release];

另一种方法是直接利用CATransition，复杂点但效果多些，可控性强，推荐.

//子视图从父视图里删除的动画效果
    CATransition * animation = [CATransition animation];
    [animation setRemovedOnCompletion:NO];
    [animation setDuration:.25];
    [animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]];
    [animation setType:kCATransitionPush];
    [animation setSubtype:kCATransitionFromRight];
    
    UIViewController * coming = [[UIViewController alloc] init];
    UIViewController * going = [[UIViewController alloc] init];
    coming.view = self.view.superview;
    going.view = self.view;
    
    [self.view.superview.layer addAnimation:animation forKey:@"animation_"];
    
    [coming viewWillAppear:YES];
    [going viewWillDisappear:YES];
    [going.view removeFromSuperview];
    [going viewDidDisappear:YES];
    [coming viewDidAppear:YES];    
    
    [self.view.superview.layer removeAnimationForKey:@"animation_"];
    
    [coming release];
    [going release];

再传送两个网址，讲的详细些：

CATransition的动画效果类型及实现方法

UIView动画小记