swift代理传值的实现

概述//委托 import UIKit protocol ValuePassDelegaete:NSObjectProtocol{          func passValue(value:String) } class ViewController2: UIViewController {               var delegate:ValuePassDelegaete?     @IB

//委托

import UIKit

protocol ValuePassDelegaete:NSObjectProtocol{

func passValue(value:String)

}

class VIEwController2: UIVIEwController {

var delegate:ValuePassDelegaete?

@IBOutlet weak var valuelab: UILabel!

@IBAction func Back(sender: UIbutton) {

self.delegate!.passValue("123")

}

overrIDe func vIEwDIDLoad() {

super.vIEwDIDLoad()

// Do any additional setup after loading the vIEw.

}

overrIDe func dIDReceiveMemoryWarning() {

super.dIDReceiveMemoryWarning()

// dispose of any resources that can be recreated.

}

/*

// MARK: - Navigation

// In a storyboard-based application,you will 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.

}

*/

}

//代理

import UIKit

class VIEwController1: UIVIEwController,ValuePassDelegaete {

@IBOutlet weak var valueLab: UILabel!

@IBAction func Click(sender: UIbutton) {

let vIEw2 = VIEwController2(nibname:"VIEwController2",bundle:nil)

vIEw2.delegate = self

self.navigationController?.pushVIEwController(vIEw2,animated: true)

}

func passValue(value: String) {

self.valueLab.text = value

}

overrIDe func vIEwDIDLoad() {

super.vIEwDIDLoad()

// Do any additional setup after loading the vIEw.

}

overrIDe func dIDReceiveMemoryWarning() {

*/

}

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