UIButton文字上下排

• (void)setButton:(UIButton*)button verticalImageAndTitle:(CGFloat)spacing
  {
  // button.titleLabel.backgroundColor = [UIColor greenColor];
  CGSize imageSize = button.imageView.frame.size;
  CGSize titleSize = button.titleLabel.frame.size;
  CGSize textSize = [button.titleLabel.text sizeWithAttributes:@{NSFontAttributeName:button.titleLabel.font}];
  CGSize frameSize = CGSizeMake(ceilf(textSize.width), ceilf(textSize.height));
  if (titleSize.width + 0.5 < frameSize.width) {
  titleSize.width = frameSize.width;
  }
  CGFloat totalHeight = (imageSize.height + titleSize.height + spacing);
  button.imageEdgeInsets = UIEdgeInsetsMake(- (totalHeight - imageSize.height), 0.0, 0.0, - titleSize.width);
  button.titleEdgeInsets = UIEdgeInsetsMake(0, - imageSize.width, - (totalHeight - titleSize.height), 0);

}