presentModalViewController 的动画效果

系统自带(四种效果)：

presentModalViewController模态的动画效果设置：

CATransition *animation = [CATransition animation];[animation setDuration:0.5];[animation setType:kCATransitionPush];[animation setSubtype:kCATransitionFromRight];[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];[[myViewController.view layer] addAnimation:animation forKey:@"SwitchToView"];  [self presentModalViewController:myViewController animated:NO];