text: //
  //  UIScreen+CZAddition.h
  //  001-Meituan
  //
  //  Created by 刘凡 on 16/5/17.
  //  Copyright © 2016年 itcast. All rights reserved.
  //
  
  #import <UIKit/UIKit.h>
  
  @interface UIScreen (RYLAddition)
  
  /// 屏幕宽度
  + (CGFloat)r_screenWidth;
  /// 屏幕高度
  + (CGFloat)r_screenHeight;
  /// 分辨率
  + (CGFloat)r_scale;
  
  @end
  