CODEWITHSUNDEEP
iosswift
Peaceilover
Peaceilover

Reputation: 73

Passing data to a specific View Controller without entering the controller Swift

I am making a app with many Views. When I am navigating from one View to another I want the data to be sent to a third view without entering the view. I know that it is a way to do this by using this code:

let nextView = self.storyboard?.instantiateViewControllerWithIdentifier("view3") as lastViewController
nextView.data = 1103

But if I do it this way and don't move to the view the data won't be saved. How can I save the data without entering it? Do I need to open it?

In the first view:

var chosenItem:Int = 0
@IBAction func buttonClicked(sender: AnyObject) {
    if sender.tag == 0 {
        chosenItem = 1
    } else if sender.tag == 1 {
        chosenItem = 2
    } else if sender.tag == 2 {
        chosenItem = 3
    }
}

This is how my code looks now:

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    if segue.identifier == "toView2" {
        let nextView = segue.destinationViewController as questionAgeViewController
        nextView.firstAnswer = chosenItem
    }
}

In the next view I send both the first item and the second. And as you understand this is not the best way to get the information. Is there a better?

Upvotes: 1

Views: 186

Answers (2)

Enthuziast
Enthuziast

Reputation: 1205

I think you might be looking for a global variable. Use this code to make the variables:

struct globalVars {
    static var firstVar = "Your text"
    static var secondVar = Some number
    static var thirdVar = Some array
}

In a other view you can access the information like this:

let globalText = globalVars.firstVar
println(globalText)

To edit the variables just use this code:

globalVars.firstVar = "The new text"

Upvotes: 2

Mrunal
Mrunal

Reputation: 14118

Create a singleton class and add properties into it, as per your requirement.

Now you can set its properties from your firstViewController and access the same from SecondViewController. 

class Singleton {
  class var sharedInstance: Singleton {
    struct Static {
      static var instance: Singleton?
      static var token: dispatch_once_t = 0
    }

    dispatch_once(&Static.token) {
      Static.instance = Singleton()
    }

    return Static.instance!
  }
}

Singleton tutorials for Swift

Upvotes: 2

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