swift - Increase a counter in the first interface controller by pressing a button in the second interface controller -

i increase value of property in first interface controller in ibaction (add1) method of second interface controller

and use value of property update label when first view controller activated

• i able increase value , value increases if press button.

• i need find solution when press ibaction in second interface controller , can result , use in first interface controller , update label.

here code:

first interface controller:

blockquote

@iboutlet weak var resultbuttonlabel: wkinterfacebutton!  @ibaction func resultbutton() {   pushcontrollerwithname("secondinterfacecontroller", context: self)  }  override func willactivate() {     super.willactivate()     resultbuttonlabel.settitle("\(counter++)") } 

blockquote

second interface controller:

blockquote

  var counter = 1  @ibaction func wescored() {     counter++     popcontroller()  } 

blockquote

the easy way implement idea use of nsuserdefaults

in firstviewcontroller can read values form nsuserdefaults way:

override func viewdidload() {     super.viewdidload()     let score = nsuserdefaults().integerforkey("score")     resultbuttonlabel.text = "\(score)" } 

and secondviewcontroller can increase counter nsuserdefaults way:

import uikit  class secondviewcontroller: uiviewcontroller {  var counter = int() override func viewdidload() {     super.viewdidload()      counter = nsuserdefaults().integerforkey("score") } @ibaction func wescored(sender: anyobject) {      counter++     nsuserdefaults().setinteger(counter, forkey: "score")     let storyboard = uistoryboard(name: "main", bundle: nil)     let vc = storyboard.instantiateviewcontrollerwithidentifier("viewcontroller") as! uiviewcontroller     self.presentviewcontroller(vc, animated: true, completion: nil)     } } 

hope help.