// 视频播放-(void)playMovie{    self.navigationItem.rightBarButtonItem.enabled = YES;        self.movieName = @"1305178253912757X4VMU00207002";    self.folderName = @"1-11";    //在VideoFolder文件夹下建立子文件夹    NSFileManager *fm = [[NSFileManager alloc]init];    NSString *docs = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)lastObject];    NSString *folderPath = [docs stringByAppendingPathComponent:[NSString stringWithFormat:@"VideoFolder/%@/%@.mp4",self.folderName,self.movieName]];    BOOL exists = [fm fileExistsAtPath:folderPath];    if (exists) {        NSURL *urls = [NSURL fileURLWithPath:folderPath];        movie = [[MPMoviePlayerController alloc]initWithContentURL:urls];        movie.controlStyle = MPMovieControlStyleDefault;        [movie  prepareToPlay];        [movie.view setFrame:CGRectMake(0, 0, 320, [UIScreen mainScreen].bounds.size.height-60)];        movie.movieSourceType = MPMovieSourceTypeFile;        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(movieFinishedCallback:) name:MPMoviePlayerPlaybackDidFinishNotification object:movie];        [movie play];    }    [fm release];    }//当视频播放结束的时候关闭视频-(void)movieFinishedCallback:(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];    [movie.view removeFromSuperview];    // 释放视频对象    //    [movie release];    [theMovie release];}//手动关闭视频-(void)closeMovie{    self.navigationItem.rightBarButtonItem.enabled = NO;        [[NSNotificationCenter defaultCenter] removeObserver:self                                                    name:MPMoviePlayerPlaybackDidFinishNotification                                                  object:movie];    [movie.view removeFromSuperview];}