text: //
  //  UIView+XYExtension.h
  //  
  //
  //  Created by mofeini on 16/9/6.
  //  Copyright © 2016年 sey. All rights reserved.
  //
  
  #import <UIKit/UIKit.h>
  
  @interface UIView (XYExtension)
  
  @property CGFloat xy_width;
  
  @property CGFloat xy_height;
  
  @property CGFloat xy_x;
  
  @property CGFloat xy_y;
  
  @property CGFloat xy_centerX;
  
  @property CGFloat xy_centerY;
  
  // 快速从xib加载第一个
  + (instancetype)xy_viewFromXib;
  @end
  