How to pass data from viewcontroller A to another viewcontroller B using swift 3

Question

I am creating instance of ViewControllerB from ViewControllerA using instantiateViewControllerWithIdentifier(identifier: String) function.

let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyboard.instantiateViewControllerWithIdentifier("vcB") as VCB;
rootController!.presentViewController(vc, animated: true, completion: nil)


class VCB: UIViewController {

required init?(coder aDecoder: NSCoder){
    super.init(coder: aDecoder)
  }

}

I want to access value which i have passed in my ViewControllerB how can i achieve this.

i alredy gone through Passing Data between View Controllers link but the answers in objective c.

There are lot of ways you can pass data from one view controller to another viewcontroller like using NSNotification center,delegate,PrepareforSegue,and using Propertylist — Sanjeet Verma, Aug 11 '16 at 06:24

score 3 · Answer 1 · answered Aug 11 '16 at 07:53

You may try

import UIKit
class ViewControllerA: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
}

@IBAction func passDataAction(sender: AnyObject) {
    let storyboard = UIStoryboard(name: "Main", bundle: nil)
    let vc = storyboard.instantiateViewControllerWithIdentifier("UIViewControllerB") as! ViewControllerB;
    vc.dataFromOtherView = "The data is passed"
    self.presentViewController(vc, animated: true, completion: nil)
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

}

And the other class

import UIKit
class ViewControllerB: UIViewController {

var dataFromOtherView: String = ""

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    print(dataFromOtherView)
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


}

from where I have to call passDataAction method ? – Krishna Meena Jun 09 '17 at 11:27 — Krishna Meena, Jun 09 '17 at 11:27

score 2 · Accepted Answer · edited Aug 11 '16 at 12:40

2

You just can declare a var in your VCB viewController and inject data to this property

let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyboard.instantiateViewControllerWithIdentifier("vcB") as VCB;

vc.yourData = SOME_DATA

rootController!.presentViewController(vc, animated: true, completion: nil)


class VCB: UIViewController {

var yourData: AnyObject?

required init?(coder aDecoder: NSCoder){
    super.init(coder: aDecoder)
  }

}

edited Aug 11 '16 at 12:40

Ashok R

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answered Aug 11 '16 at 06:18

iSashok

2,326
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do i have to import my viewcontrollerB in viewcontrollerA? – Ashok R Aug 11 '16 at 06:21
1

@Ashok no you don't need to. – Rishab Aug 11 '16 at 06:22
**value of type 'UIViewController' has no memebr 'yourData' error** – Ashok R Aug 11 '16 at 07:16
I have two files one is viewcontrollerA.swift and another one is viewcontrollerB.swift – Ashok R Aug 11 '16 at 07:17

score 1 · Answer 3 · answered Mar 26 '17 at 17:01

Just use this code send data from one view controller to anotherview controller

   let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc=storyboard.instantiateViewControllerWithIdentifier("secondView") as! ViewControllerB;
vc.dataFromOtherView = "The data is passed"
self.presentViewController(vc, animated: true, completion: nil)

How to pass data from viewcontroller A to another viewcontroller B using swift 3

3 Answers3

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