오늘 날짜로 파일이름 저장하기

 // filename now

        NSDate *now = [NSDate date];        

        NSDateFormatter *format = [[NSDateFormatter alloc] init];

        [format setDateFormat:@"YYYYMMdd_HHmmss"];

        filenameNow = [format stringFromDate:now];

        // file save Start

        NSString *DocPath;

        NSString *filePath;     

        DocPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];

        filePath = [DocPath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.mov", filenameNow]];  

        NSURL *fileURL = [[NSURL alloc] initFileURLWithPath:filePath];

        NSFileManager *fileManager = [NSFileManager defaultManager];

        if ([fileManager fileExistsAtPath:filePath]) {

            NSLog(@"file exist:%s url:%@",[DocPath UTF8String],fileURL);

            [fileManager removeItemAtURL:fileURL error:nil];

        }