text: //
  //  UIViewController+Dispatch.h
  //  TestDemo
  //
  //  Created by ClearWB on 16/9/8.
  //  Copyright © 2016年 zhl. All rights reserved.
  //
  
  #import <UIKit/UIKit.h>
  
  @interface UIViewController (Dispatch)
  -(void)dispatch_gruop;
  -(void)cancelTask;
  @end
  