UIViewController 其间的动画切换

两个UIView之间的翻转可以用动画效果翻转(上下，左右)

?? ?UIViewController之间的切换除了UINavigationController里面的pushViewController和 popViewController与UITalbarController在viewControllers之间的切换外， 我们还可以在其他地方自由的进行ViewController切换：

MyViewController *_myViewController = [[MyViewController alloc] init];

_myViewController.modalTransitionStyle =?UIModalTransitionStyleFlipHorizontal;

[self?presentModalViewController: _myViewController Animated: YES];

[_myViewController release];

?

有四种切换形式（modalTransitionStyle）：????

?UIModalTransitionStyleFlipHorizontal??

?UIModalTransitionStyleCoverVertical (default) ??

?UIModalTransitionStyleCrossDissolve?? ?

?UIModalTransitionStylePartialCurl
退回方法：[self?dismissModalViewControllerAnimated:YES];

与此对应的是播放视频时：

?[self?presentMediaPlayerViewController:moviePlayer Animated:YES];

?[self?dismissMediaPlayerViewControllerAnimated:YES];