无论如何就是找不到方法🤣
/**
Rounds a new image with a given corner size.
@param radius The radius of each corner oval. Values larger than half the
rectangle's width or height are clamped appropriately to half
the width or height.
*/
- (nullable UIImage *)imageByRoundCornerRadius:(CGFloat)radius;
原来是因为,Swift里省略了头部image,调用这个方法要这样调用
image.ByRoundCornerRadius(5)
