             if refreshState == .pulling {
                 refreshState = .refreshing
             }
-            
-            
-            
+           
         }
-        
-        
-        
-        
-        
+       
     }
     
     

            make.leading.equalTo(arrowIcon.snp_trailing)
            make.centerY.equalTo(arrowIcon)
        }
        
        
    }
    

        //添加下拉刷新的控件
        addSubview(arrowIcon)
        addSubview(messageLabel)
        addSubview(indicatorView)
        
        //约束
        arrowIcon.snp_makeConstraints { (make ) in
