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import UIKitclass ViewController: UIViewController,EditViewControllerDelegate{ @IBOutlet weak var label: UILabel! override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } //页面跳转时 override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) { if segue.identifier == "EditView"{ //通过seque的标识获得跳转目标 let controller = segue.destinationViewController as EditViewController //设置代理 controller.delegate = self //将值传递给新页面 controller.oldInfo = label.text } } func editInfo(controller:EditViewController, newInfo:String){ label.text = newInfo; //关闭编辑页面 controller.presentingViewController!.dismissViewControllerAnimated(true, completion: nil) } func editInfoDidCancer(controller:EditViewController){ //关闭编辑页面 controller.presentingViewController!.dismissViewControllerAnimated(true, completion: nil) }} |
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import UIKitclass EditViewController: UIViewController { @IBOutlet weak var textField: UITextField! var delegate:EditViewControllerDelegate? var oldInfo:String? override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view. if oldInfo != nil{ textField.text = oldInfo } } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } @IBAction func done(sender: AnyObject) { delegate?.editInfo(self, newInfo: textField.text) } @IBAction func cancel(sender: AnyObject) { delegate?.editInfoDidCancer(self) }} |
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protocol EditViewControllerDelegate{ func editInfo(controller:EditViewController, newInfo:String) func editInfoDidCancer(controller:EditViewController)} |
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原文地址：http://www.cnblogs.com/Free-Thinker/p/4841059.html
