1. 一開始我的方案

自定義類繼承UIButton，然后

-(void)layoutSubviews{? ? [superlayoutSubviews];CGFloatmidX =self.frame.size.width/2;CGFloatmidY =self.frame.size.height/2;self.titleLabel.center=CGPointMake(midX, midY +15);self.imageView.center=CGPointMake(midX, midY -10);}

效果嘛，還不錯，現(xiàn)在開發(fā)的項目中一直在用。但是心里總感覺這樣有點旁門左道的樣子，于是乎就有了下邊的另外一種實現(xiàn)。

2. 之后試了好多次得到的結(jié)果

UIButton添加擴展

- (void)verticalImageAndTitle:(CGFloat)spacing{

self.titleLabel.backgroundColor = ?[UIColorgreenColor];

CGSizeimageSize = self.imageView.frame.size;

CGSizetitleSize = self.titleLabel.frame.size;

CGSizetextSize = [self.titleLabel.textsizeWithFont:self.titleLabel.font];

CGSizeframeSize =CGSizeMake(ceilf(textSize.width), ceilf(textSize.height));

if(titleSize.width+0.5< frameSize.width) {? ?

? ? titleSize.width= frameSize.width;? ?

}

CGFloattotalHeight = (imageSize.height+ titleSize.height+ spacing);

self.imageEdgeInsets=UIEdgeInsetsMake(- (totalHeight - imageSize.height),0.0,0.0, - titleSize.width);

self.titleEdgeInsets=UIEdgeInsetsMake(0, - imageSize.width, - (totalHeight - titleSize.height),0);

原文鏈接：http://www.lxweimin.com/p/778aac34926a