视屏播放

-(void)playMovie:(NSString *)fileName{
    //视频文件路径
    NSString *path = [[NSBundle mainBundle] pathForResource:fileName ofType:@"mp4"];
    //视频URL
    NSURL *url = [NSURL fileURLWithPath:path];
    //视频播放对象
    MPMoviePlayerController *movie = [[MPMoviePlayerController alloc] initWithContentURL:url];
    movie.controlStyle = MPMovieControlStyleFullscreen;
    [movie.view setFrame:self.view.bounds];
    movie.initialPlaybackTime = -1;
    [self.view addSubview:movie.view];
    // 注册一个播放结束的通知
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(myMovieFinishedCallback:)
                                                 name:MPMoviePlayerPlaybackDidFinishNotification
                                               object:movie];
    [movie play];
}

#pragma mark -------------------视频播放结束委托--------------------

/*
 @method 当视频播放完毕释放对象
 */
-(void)myMovieFinishedCallback:(NSNotification*)notify
{
    //视频播放对象
    MPMoviePlayerController* theMovie = [notify object];
    //销毁播放通知
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:MPMoviePlayerPlaybackDidFinishNotification
                                                  object:theMovie];
    [theMovie.view removeFromSuperview];
    // 释放视频对象
    [theMovie release];
}