iOS 导航栏

(void)setupRightBarButon{
    UIBarButtonItem *btnSave = [[UIBarButtonItem alloc]
                                initWithTitle:@"图片浏览"
                                style:UIBarButtonItemStylePlain
                                target:self
                                action:@selector(clickBookList:)];
    self.navigationItem.rightBarButtonItem = btnSave;
}