swift 修改button图片和标题的位置

可以重新构建一个继承于UIbutton的类，然后重写布局方法

import UIKit

class RightImageLeftTitleButton: UIButton {

override init(frame: CGRect) {

       super.init(frame: frame)

}

required init?(coder aDecoder: NSCoder) {

fatalError("init(coder:) has not been implemented")

}

override func layoutSubviews() {

super.layoutSubviews()

／／这里计算标题和图片等起始位置

let viewX:CGFloat = (self.frame.size.width - (titleLabel?.frame.size.width)! - (imageView?.frame.size.width)! - 8) / 2

titleLabel?.frame.origin.x = viewX

imageView?.frame.origin.x = (titleLabel?.frame.maxX)! + 8

}

}