解决:UIBarButtonItem size issue.尺寸
CN
Issue:使用xib制作的custom view在Navbar上不能够如愿显示尺寸。重写intrinsicContentSize可以解决。
EN
Issue: The custom view made with xib cannot display the size as expected on Navbar. Rewriting intrinsicContentSize can be solved. https://github.com/Meterwhite/XICommand