有条件地遵循segue [英] Conditionally following a segue

问题描述

在我的应用中，我有一个登录屏幕。但是，当您将登录按钮中的segue连接到下一个（表格）视图控制器时，无论您输入什么作为登录信息，您始终都可以继续。如何检查登录信息，然后决定是否执行segue，那么如何有条件地执行segue？

In my app I have a login screen. When connecting a segue from the login button to the next (table) view controller however, you are always able to proceed, no matter what you type in as login information. How can I check the login information and then decide whether to perform the segue or not, so how to perform the segue conditionally?

在使用时是否可以实现这一点？一个塞格？我知道它可以通过编程方式完成，但后来我需要另一个导航控制器，因为我需要一个导航栏..

Is it possible to achieve this while working with a segue? I know it can be done programmatically, but then I need another navigation controller cause I need a navigation bar..

推荐答案

你可以连接您的登录按钮或某些IBAction代码，确定登录是否应继续，然后（如果应该）您可以使用 performSegueWithIdentifier：转换到新视图。

You can wire up your login button or whatever to some IBAction code, decide if the login should proceed and then (if it should) you can use performSegueWithIdentifier: to transition to the new view.

我刚写了另一篇关于使用这种方法的帖子，这里。

I just wrote another post about using this method, here.

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