ios – 选择表格视图单元格后,将数据传回上一个视图控制器

概述在将表格视图单元格选择到上一个视图控制器后,我无法传递数据.在选择表格视图单元格后,我几乎试图从前一个视图控制器更改标签.任何人都可以帮我解决这个问题吗？我正在尝试在选择单元格后更改UITextField. UIViewController中： class WhoToOdds: UIViewController, sendBack,UITextFieldDelegate{ @IBOutl 在将表格视图单元格选择到上一个视图控制器后,我无法传递数据.在选择表格视图单元格后,我几乎试图从前一个视图控制器更改标签.任何人都可以帮我解决这个问题吗？我正在尝试在选择单元格后更改UITextFIEld.

UIVIEwController中：

class WhoToOdds: UIVIEwController,sendBack,UITextFIEldDelegate{    @IBOutlet var chosenContact: UITextFIEld!    @IBOutlet var oddsTextBox: UITextVIEw!    var frIEnd: String?    overrIDe func vIEwWillAppear(animated: Bool) {        super.vIEwWillAppear(animated)        navigationController?.setNavigationbarHIDden(false,animated: true)    }    func sendnametoprevIoUsVC(selectedfrIEndname: String) {        frIEnd = selectedfrIEndname        chosenContact.text = frIEnd    }    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.    }    overrIDe func prepareForSegue(segue: UIStoryboardSegue,sender: AnyObject?) {        if segue.IDentifIEr == "frIEndList"{            let frIEndVIEwController = (segue.destinationVIEwController as! frIEndListController)        var fbRequest = FBSDKGraphRequest(graPHPath:"/me/frIEnds",parameters: nil);        fbRequest.startWithCompletionHandler { (connection : FBSDKGraphRequestConnection!,result : AnyObject!,error : NSError!) -> VoID in        if error == nil {            println("FrIEnds are : \(result)")            PFUser.currentUser()?["frIEnd_List"] = result            PFUser.currentUser()?.save()            print(result)            var resultdict = result as! NSDictionary            println("Result Dict: \(resultdict)")            frIEndVIEwController.frIEndarray = resultdict.objectForKey("data") as! NSArray            } }        }    }    @IBAction private func submitChallenge(sender: AnyObject) {        navigationController?.popVIEwControllerAnimated(true)    }}@H_404_14@  
tableVIEwController：
  
  
protocol sendBack{    func sendnametoprevIoUsVC(contact: String)    }    class frIEndListController: UItableVIEwController,UItableVIEwDataSource,UItableVIEwDelegate{    var frIEndarray:NSArray = ["a","b","c"]    var valueDict:NSDictionary = [:]    var mDelegate:sendBack?    var selectedFrIEnd :String?    overrIDe func vIEwWillAppear(animated: Bool) {        super.vIEwWillAppear(animated)        navigationController?.setNavigationbarHIDden(false,animated: true)    }    overrIDe func vIEwDIDLoad() {        super.vIEwDIDLoad()    }    overrIDe func tableVIEw(tableVIEw: UItableVIEw,numberOfRowsInSection section: Int) -> Int {        return frIEndarray.count    }    overrIDe func tableVIEw(tableVIEw: UItableVIEw,cellForRowAtIndexPath indexPath: NSIndexPath) -> UItableVIEwCell {        let cell = tableVIEw.dequeueReusableCellWithIDentifIEr("frIEnd",forIndexPath: indexPath) as! UItableVIEwCell        cell.textLabel!.text = (frIEndarray[indexPath.row] as! String)        return cell    }    overrIDe func tableVIEw(tableVIEw: UItableVIEw,dIDSelectRowAtIndexPath indexPath: NSIndexPath){        let indexPath = tableVIEw.indexPathForSelectedRow();        let currentCell = tableVIEw.cellForRowAtIndexPath(indexPath!) as UItableVIEwCell!        selectedFrIEnd = currentCell.textLabel!.text as String!        sendBackFrIEndList(selectedFrIEnd!)        navigationController?.popVIEwControllerAnimated(true)    }    func sendBackFrIEndList(name: String){       self.mDelegate?.sendnametoprevIoUsVC(name)    }}@H_404_14@解决方法 您的代表需要设置.在你的情况下,你必须在prepareForSegue方法中设置它  
  
  
overrIDe func prepareForSegue(segue: UIStoryboardSegue,sender: AnyObject?) {if segue.IDentifIEr == "frIEndList"{    let frIEndVIEwController = (segue.destinationVIEwController as! frIEndListController)    frIEndVIEwController.mDelegate = self //Include this line//rest of the code}}@H_404_14@                            	          总结       
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