iOS Swift：返回上一个视图控制器

Question

from a dynamic tableView "CardSets" I do a segue to a static tableView "AddCardSet" to enter some data. After successfull save() method I want to send the user back to the initial tableView "CardSets". How can I do that?

Do I have to set a segue onto the save button? Or is there a shorter way?

Answer 1

You can use popViewControllerAnimated :

if let navigationController = self.navigationController
{
    navigationController.popViewControllerAnimated(true)
}

Answer 2

the best answer is to create A singltone like this :

for example :

class Collage {

var classes: [Class] = []
static var collageSharedInsttance : Collage? = nil

static func GetSharedInstance() -> Collage {
    if collageSharedInsttance == nil {
        collageSharedInsttance = Collage()
    }

    return collageSharedInsttance!
}

}

and Access your data from the second controller like this :

    var JohnBryceCollage = Collage.GetSharedInstance()

Answer 3

The best option is to use Unwind segue for this case. They allow you to jump back through navigation stack. And they are independent of how your controllers are presented - modally or within UINavigationController stack. More of that they allow you to jump through multiple levels back.

Please check out Apple's Tech Note and this great answer