自定义类继承UIButton,然后
-(void)layoutSubviews
{
[super layoutSubviews];
CGFloat midX = self.frame.size.width / 2;
CGFloat midY = self.frame.size.height/ 2 ;
self.titleLabel.center = CGPointMake(midX, midY + 15);
self.imageView.center = CGPointMake(midX, midY - 10);
}
转载于:https://my.oschina.net/wenchengxu123/blog/688176