text: //
  //  UIButton+HLToolkit.h
  //  HLToolkit
  //
  //  Created by hl on 2018/9/20.
  //
  
  #import <UIKit/UIKit.h>
  
  
  @interface UIButton (HLToolkit)
  - (void)setBackgroundColor:(nullable UIColor *)color forState:(UIControlState)state;
  @end
  