text: //
  //  QGBaseViewController.h
  //  Masonry
  //
  //  Created by 宇园 on 2018/8/16.
  //
  
  #import <UIKit/UIKit.h>
  
  @interface QGBaseViewController : UIViewController
  
  @property (nonatomic, strong) IBOutlet NSLayoutConstraint *viewTop;
  @property (nonatomic, strong) IBOutlet NSLayoutConstraint *viewBottom;
  
  /**
   使用自定已导航栏, 需要添加的顶部空白距离
   */
  @property (nonatomic, assign, readonly) CGFloat extraTopSpace;
  
  @end
  