我如何选择另一个与当前根控制器共享相同根控制器的viewController？
[英]How do I segue to another viewController that shares the same root controller as the current one?
问题描述
I have 3 viewControllers : A, B and C. 
我有3个viewControllers ：A，B和C。
A has a segue to B and A also has a segue to C. A对B有关系，A对C也有关系。
If I'm currently in C, how do I segue over to B? 如果我目前在C中，该如何选择B？
Note;
The following solution would be nice if I could unwind from C to A and then push to B without showing A in the process, but I can't get this to work, and no-one has provided a solution. 如果我可以从C放松到A，然后在不显示A的情况下将其推到B，则以下解决方案将是不错的选择，但是我无法使其正常工作，而且没有人提供解决方案。
Chain two segues to look like one 将两个segue链接起来看起来像一个
Note;
UINavigationController.UINavigationController。 I've tried simply pushing from C to B but then I'm not able to deallocate C. Calling unwind on C at any point during this process gives weird behaviour where A might appear on screen at some point.
Does anyone have a solution to this? 有人对此有解决方案吗？
1 个解决方案
解决方案1
0 2018-05-11 08:39:23
There is plenty of way to accomplish what you want. 有很多方法可以完成您想要的。
I would do something really easy: that is to add an unwind segue (it's explained above how to add one) to exit to the first A vc, and add a custom segue (no matter which one) between B and C (that you simply create with the storyboard). 我会做一些非常简单的事情：添加一个放松的序列 （上面已经解释了如何添加一个序列 ）以退出到第一个A vc，并在B和C之间添加一个自定义序列 （无论是哪个序列 ）（您只需使用情节提要创建）。
You start in A, then: 您从A开始，然后：
- If you go to B, you can come back using the
self.dismiss, your using your exit segue.如果您前往B，则可以使用self.dismiss，使用出口segue。 - If you go to C, you can come back to A the same way, or you can go to B. 如果转到C，则可以以相同的方式返回A，也可以转到B。
- Once you are in B (from: A to C, C to B), you can come back to C using
self.dismissor you can come back to A using the exit segue.进入B后（从A到C，从C到B），您可以使用self.dismiss返回C，也可以使用出口segue返回A。
To add un unwind segue, you must add a function to your first VC of the type: 要添加解散序列，必须将函数添加到类型的第一个VC中：
@IBAction func unwindToA(segue: UIStoryboardSegue)
Then, in the storyboard when you are creating your segue on the your B view controller (using control+drag), start to drag from the VC icon (on the top of the screen) to the exit icon. 然后，在情节提要中，当您在B视图控制器上创建Segue时（使用Control + Drag），开始从VC图标（在屏幕顶部）拖动到退出图标。 Then, you will see appear a new segue, named 'unwindToA', which will take you back to your first VC: A. 然后，您会看到一个名为“ unwindToA”的新名称，它将带您回到第一个VC：A。
To create your segue from B to C, you can do by control+drag from the first to the second VC in your storyboard, and choose the type you prefer (or you can create a custom segue if those provided don't correspond to want you expect). 要从B到C创建序列，您可以通过控制+拖动故事板中的第一个VC至第二个VC，然后选择您喜欢的类型（或者您可以创建自定义序列，如果提供的序列与想要的序列不符）。您期望）。
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.