自定义UIButton(图片在上，文字在下)

如图：

Paste_Image.png

代码:
<pre>
ZQUIButton.h
'#import <UIKit/UIKit.h>
@interface ZQUIButton : UIButton
@end

---

ZQUIButton.m
@implementation ZQUIButton

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.

• (void)drawRect:(CGRect)rect {
  // Drawing code
  }
  */

• (instancetype)initWithFrame:(CGRect)frame
  {
  self = [super initWithFrame:frame];
  if (self) {

  }
  return self;
  }

-(void)layoutSubviews
{
[super layoutSubviews];
[self setImageEdgeInsets:UIEdgeInsetsMake(-self.titleLabel.intrinsicContentSize.height, 0, 0, -self.titleLabel.intrinsicContentSize.width)];
[self setTitleEdgeInsets:UIEdgeInsetsMake(self.currentImage.size.height + 20, -self.currentImage.size.width, 0, 0)];
}

@end
</pre>