关于swift构造方法

switf 中如果遇到这样的错，，，大概错误就是，"必须要调用父类的构造方法"，，可是呢，，调用了super.init()  不就是调用了构造方法了吗？

结果上去一查，，结果一名外国大神  "Therefore what you'll do is call init(nibName:bundle:), and since this view controller has no nib file, just pass nil for the nib name. This in fact is what super.init() was doing in the earlier version of Swift - it was calling init(nibName:bundle:) with nil values for you. So nothing is really lost or changed."

意思就是说，，必须要调用最底层的构造方法，，

结果如下