- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.
    //获得nib视图数组  

    NSArray *nibContents = [[NSBundle mainBundle] loadNibNamed:@"HeadView" owner:nil options:nil];

    // Find the view among nib contents (not too hard assuming there is only one view in it).
    // 得到最后一个view

    HeadView *headView = [nibContents lastObject];

    headView.frame = CGRectMake(, , , );

    //headView.backgroundColor = [UIColor blueColor];

    _tableView.tableHeaderView = headView;

}