Setting a value in one file from another programmatically [Swift]

Question

Not the same as: Passing values ... and Swift - programmatically ... was not helpful for my situation.

When I press a button in one file (NSViewController)

@IBAction func bookPressed(sender: NSButton) { 
    var popVC = NSStoryboard(name: "Main", 
        bundle: nil)?.instantiateControllerWithIdentifier("PopoverViewController") as? NSViewController
    popVC.bookName = "hello"
}

I want this file to show the results of bookName = "hello"

class PopoverViewController: NSViewController {

    let bookName: String = ""

    override func viewDidLoad() {
        super.viewDidLoad()

        println(bookName)
    }
}

What am I missing?

you also can use singleton :)

Nurdin
– Nurdin

2015-05-18 02:51:13 +00:00
Commented May 18, 2015 at 2:51 — Nurdin
– Nurdin, Commented May 18, 2015 at 2:51
Don't use a singleton

Ian
– Ian

2015-05-18 04:27:20 +00:00
Commented May 18, 2015 at 4:27 — Ian
– Ian, Commented May 18, 2015 at 4:27

Ian · Accepted Answer · 2015-05-18 01:59:10Z

1

You need to cast popVC as PopoverViewController so you can set the bookName property, as NSViewController does not have a property bookName:

var popVC = NSStoryboard(name: "Main", 
    bundle: nil)?.instantiateControllerWithIdentifier("PopoverViewController") as? PopoverViewController

Then you will need to present the view controller you just instantiated using presentViewController(_:animated:completion:)

Furthermore, in your PopoverViewController class, you should use var for bookName because it is immutable as is.

answered May 18, 2015 at 1:59

Ian

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1 Comment

tazboy Over a year ago

I didn't realize that I needed to use presentViewController, too. Thank you.

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