每次做按鈕圖文上下排列的時(shí)候都要算來算去、、、

[btn setTitleEdgeInsets:UIEdgeInsetsMake(btn.imageView.frame.size.height ,-btn.imageView.frame.size.width, 0.0,0.0)];
[btn setImageEdgeInsets:UIEdgeInsetsMake(-btn.titleLabel.bounds.size.height,(btn.frame.size.width-btn.imageView.bounds.size.width)/2.0,0.0,(btn.frame.size.width-btn.imageView.bounds.size.width)/2.0)];