     private lazy var popoverAnimator : PopoverAnimator = PopoverAnimator() // 动画管理的对象
     private lazy var statusViewModels : [StatusViewModel] = [StatusViewModel]()
     private lazy var cellHeightCache : [String : CGFloat] = [String : CGFloat]()
+    private lazy var tipLabel: UILabel = UILabel()
     
     //记录菜单是否展开
     var isPresent :Bool = false

//        footerView.beginRefreshing()
        
    }
}



            }
            
            // 4.缓存图片
            self.cacheImages(models)
        }
    }
    
    /// 缓存图片
    private func cacheImages(models: [StatusViewModel]) {
        //0.创建group
        let group = dispatch_group_create()
        
