text: //
  //  PPURLRouter+NSObject.h
  //  PatPat
  //
  //  Created by Bruce He on 15/8/17.
  //  Copyright (c) 2015年 http://www.patpat.com. All rights reserved.
  //
  
  #import <Foundation/Foundation.h>
  
  @interface NSObject(PPURLRouter_NSObject)
  
  - (UIViewController *)currentVisibleViewController;
  
  - (UIViewController *)rootViewController;
  
  @end
  