How do I create a segue that can be called from a button that is created programmatically?

问题

In Swift I have a button created programmaticaly using:

var button = UIBarButtonItem(title: \"Tableau\", style: .Plain, target: self, action: \"tabBarTableauClicked\")

I want that when the user clicks the button it changes viewControllers. Here is the code for tabBarTableauClicked:

func tabBarTableauClicked(){
    performSegueWithIdentifier(\"tableau\", sender: self)
}

But it is obviously not working because there is no segue with an identifier called \"tableau\".

And I can\'t create a segue using Ctrl + click the button and drag to the second viewController because the button is created programatically and not in the Storyboard.

How can I create a segue with an identifier programmatically in Swift?

回答1:

Here is how to set up a segue so that it can be called programmatically.

• Control drag from the ViewController icon in the first view controller to the second view controller.
• Click on the segue arrow between the two view controllers, and in the Attributes Inspector on the right, give the segue an Identifier (tableau in your case).
• Then you can trigger the segue with performSegueWithIdentifier in your code.

You can read more about setting up and using segues here.

来源：https://stackoverflow.com/questions/26456989/how-do-i-create-a-segue-that-can-be-called-from-a-button-that-is-created-program