使用instantiateViewControllerWithIdentifier和performseguewithidentifier有什么区别？ [英] What is the difference between using instantiateViewControllerWithIdentifier and performseguewithidentifier?

问题描述

这两种方法都允许我提供一个新的视图控制器（一个通过调用presentviewcontroller），所以我不明白两者之间的区别以及何时应该使用它们。

Both methods allow me to present a new view controller (one by calling presentviewcontroller), so I don't understand the difference between the two and when I should use them.

推荐答案

他们都参考故事板相关的标识符。主要区别是一个（ performSegueWithIdentifer ）基于segue的结尾（segue指向的地方）实例化一个对象，而另一个（ instantiateViewControllerWithIdentifier ）基于VC的标识符（而不是segue）实例化一个唯一的VC。

They both reference storyboard related identifiers. The main difference is one (performSegueWithIdentifer) instantiates an object based on a segue's end (where the segue points to), while the other (instantiateViewControllerWithIdentifier) instantiates a unique VC based on the VC's identifier (not the segue).

你可以在不同的地方有多个具有相同标识符的segue故事板，而故事板中的VC不能具有相同的标识符。

You can have multiple segue's with the same identifier in different places in the storyboard, while VC's in a storyboard cannot have the same identifier.

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