MPMoviePlayerViewController和MPMoviePlayerController

MPMoviePlayerViewController和MPMoviePlayerController 使用场合不一样

MPMoviePlayerViewController是在iOS3.2以后的平台上使用。MPMoviePlayerController在3.2之前使用，虽然在3.2之后也能使用，但是使用方法略有改变，建议3.2之后使用MPMoviePlayerViewController。

3.2之后,MPMoviePlayerController作为MPMoviePlayerViewController的一个属性存在。

以下是使用MPMoviePlayerViewController播放视频的代码:

- (void) playVideo:(NSURL *) movieURL//根据视频url播放视频
{
    playerViewController = [[MPMoviePlayerViewController alloc]     initWithContentURL:movieURL];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playVideoFinished:) name:MPMoviePlayerPlaybackDidFinishNotification object:[playerViewController moviePlayer]];
    playerViewController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
    [self presentModalViewController:playerViewController animated:YES];
    MPMoviePlayerController *player = [playerViewController moviePlayer];
    [player play];
}

- (void) playVideoFinished:(NSNotification *)theNotification//当点击Done按键或者播放完毕时调用此函数
{
    MPMoviePlayerController *player = [theNotification object];
	[[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:player];
    [player stop];
    [playerViewController dismissModalViewControllerAnimated:YES];
}