iOS 圆角和阴影共存

- (void)addShadowToView:(UIView *)view

            withOpacity:(float)shadowOpacity

           shadowRadius:(CGFloat)shadowRadius

        andCornerRadius:(CGFloat)cornerRadius

              andOffset:(CGSize)offsize

{

    view.layer.cornerRadius= shadowRadius;

    view.layer.shadowColor = [UIColor blackColor].CGColor;

    view.layer.shadowOffset= offsize;

    view.layer.shadowOpacity= shadowOpacity;

    view.layer.shadowRadius= cornerRadius;

}