IOS closure Pass-through and proxy-pass values

let vc = viewcontroller()

let navc = uinavigationcontroller(ROOTVIEWCONTROLLER:VC)

window = UIWindow(frame: uiscreen. Mainscreen(). Bounds)

window?. backgroundcolor = uicolor. Whitecolor()

window?. Rootviewcontroller = NAVC

window?. makekeyandvisible()

//Override point for customization after application launch.

return true

Import UIKit

Class Viewcontroller: uiviewcontroller {

override func viewdidload () {

Super. Viewdidload()

let btn = UIButton(frame: cgrectmake()

Btn. settitle(" next page ", forstate: uicontrolstate. Normal)

Btn. backgroundcolor = uicolor. Redcolor()

Btn. addTarget(self, action: "PUSHTOSECONDVC", forControlEvents: uicontrolevents . touchupinside)

View. Addsubview(BTN)

additional setup after loading the view, typically from a nib.

}

func PUSHTOSECONDVC () {

let secondvc = secondviewcontroller()

SECONDVC. closure = {

(Color:uicolor),Void

inch

self. View. BackgroundColor = Color

}

navigationcontroller?. Pushviewcontroller(SECONDVC, animated: true)

}

override func didreceivememorywarning () {

Super. Didreceivememorywarning()

//Dispose of any resources, can be recreated.

}

}

Import UIKit

Class Secondviewcontroller: uiviewcontroller {

var closure: ((color:uicolor),Void)?

override func viewdidload () {

View. BackgroundColor = uicolor. Cyancolor()

Super. Viewdidload()

let btn = UIButton(frame: cgrectmake()

Btn. settitle(" previous page ", forstate: uicontrolstate. Normal)

Btn. backgroundcolor = uicolor. Redcolor()

Btn. addTarget(self, action: "POPTOFIRSTVC", forControlEvents: uicontrolevents. touchupinside)

View. Addsubview(BTN)

additional setup after loading the view.

}

override func didreceivememorywarning () {

Super. Didreceivememorywarning()

//Dispose of any resources, can be recreated.

}

func POPTOFIRSTVC () {

let greencolor = uicolor. Greencolor()

Closure! ( Color:greencolor)

navigationcontroller?. popviewcontrolleranimated(true)

}

/*

MARK:-Navigation

In a storyboard-based application, you'll often want to do a little preparation before navigation

Override Func Prepareforsegue (Segue:uistoryboardsegue, sender:anyobject?) {

Get The new view controller using Segue.destinationviewcontroller.

Pass the selected object to the new view controller.

}

*/

}

IOS closure Pass-through and proxy-pass values