问题
I have a few views embedded in a navigation controller.
I've created a few segues (some from buttons to other view controllers, some from one view controller to another one.
for example I have a segue (Show) from one button to a view controller called name2, when I press the button it works great, but when I try to call it programmatically the app crashes and gives an error.
This is how I call the segue on ViewController1
self.performSegueWithIdentifier("name2", sender: self)
this is from ViewController1 to ViewController2
I also have a segue that is connected not to a button but from vc1 to vc2, gives the same error.
This is the strange error I get:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Receiver (ViewController2) has no segue with identifier 'name2''
I tried cleaning the product and also reseting the simulator.
A screen shot of my storyboard
A screen of the identity inspector of viewcontroller1 (it is actually called ViewController in my project)
A screen shot of the segue (name3)
The options of the segue :
Edit:
I found that when I connect a button as an IBAction and then call performSegueWithIdentifier("LogIn", sender: self) from the button it works correctly.
Any help?
回答1:
Do not connect your Button in Storyboard Editor to the other segue (when you want to call the performWithSegue function within your ViewController1) - just connect the first ViewController to the second One.
Then you can use
self.performSegueWithIdentifier("name2", sender: self)
within your ViewController1 class.
回答2:
When you set the Segue from one view controller to the other, ensure that you have correctly set the class - see image:
UIStoryBoardSegue was what mine needed.
回答3:
The error says that you're looking for a segue in ViewController2 but your question states that the segue comes from a button. That would explain why it can't be found.
回答4:
Try to remove the segue identifier ( name ), build ( cmd + b ), then set the segue identifier and compile. ( in storyboard of course )
回答5:
Ok the answer is that I'm pretty dumb,
Whenever I was creating new ViewControllers, I was subclassing ViewController which was my first ViewController, instead of UIViewController which made it run recursivly.
来源：https://stackoverflow.com/questions/26023766/cant-call-a-segue-in-code-swift