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UIButton設置UIControlContentHorizontalAlignment調整文字對齊方式

control state https uiimage align class ali cte horizon

UIButton 繼承自UIControl,所以可以對UIControlContentHorizontalAlignment進行設置

        btn.setImage(UIImage.init(named: "unSelected"), for: UIControl.State.normal)
        btn.setImage(UIImage.init(named: "selected"), for: UIControl.State.selected)
        btn.contentHorizontalAlignment = .right

  

https://blog.csdn.net/timtian008/article/details/53611744

UIButton設置UIControlContentHorizontalAlignment調整文字對齊方式