let dic=["fanbingbing":"范冰冰","libingbing":"李冰冰","wangfei":"王菲","yangmi":"杨幂","zhouxun":"周迅"];
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        if (imgName != nil){
            imgView.image=UIImage(named: imgName!);
            navigationItem.title=dic[imgName!];
        }
    }