主要介绍了iOS - UIButton(UIEdgeInsets)／设置button上的文字和图片上下垂直居中对齐的相关资料,需要的朋友可以参考下

UIEdgeInsets typedef struct UIEdgeInsets { CGFloat top, left, bottom, right; // specify amount to inset (positive) for each of the edges. values can be negative to 'outset' } UIEdgeInsets; 在UIButton中有三个对EdgeInsets的设置：ContentEdgeInsets、titleEdgeIns