所以我创建了一个用户创建自定义锻炼的应用程序。 您输入第一个视图添加x个轮次，而不是单击桌面视图中添加圆形的按钮。单击此按钮将打开另一个带有集合视图的活动。
所以问题就在这里，当我点击一个元素时，女巫代表需要在该轮次中的练习，它向我发送一个空结果。默认情况下，如果我为该字符串添加一个值，它就可以工作。
我注意到unwind在我的didSelectItemAtIndexPath
之前发生import UIKit
class InsertWorkout: UIViewController{
@IBOutlet var InsertRoundTable: UITableView!
@IBOutlet weak var txtName: UITextField!
var RoundNumber : NSMutableArray = ["Round 1"]
var RoundLabel : NSMutableArray = [""]
var RoundExercise : NSMutableArray = ["add-1"]
var RoundExerciseImages : NSMutableArray = ["providno"]
var RoundNumber_Count=1
var RoundNumber_Add_Counter=1
var studentData : StudentInfo!
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
//MARK: UIButton Action methods
@IBAction func btnBackClicked(sender: AnyObject)
{
self.navigationController?.popViewControllerAnimated(true)
}
@IBAction func btnSaveClicked(sender: AnyObject)
{
if(txtName.text == "")
{
Util.invokeAlertMethod("", strBody: "Please enter workout name.", delegate: nil)
}
else
{
let studentInfo: StudentInfo = StudentInfo()
studentInfo.workout_name = txtName.text!
studentInfo.workout_benefit_1=" CUSTOM "
studentInfo.workout_benefit_2=" WORKOUT "
studentInfo.workout_benefit_3=""
studentInfo.workout_requiremnets="arsutech.com"
studentInfo.workout_time="4min"
let isInserted = ModelManager.getInstance().addWorkoutData(studentInfo)
if isInserted {
Util.invokeAlertMethod("", strBody: "Workout added", delegate: nil)
} else {
Util.invokeAlertMethod("", strBody: "Error while adding workout.", delegate: nil)
}
self.navigationController?.popViewControllerAnimated(true)
}
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
self.view.endEditing(true)
InsertRoundTable.endEditing(true)
}
//UITableView
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
// #warning Potentially incomplete method implementation.
// Return the number of sections.
return 1
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete method implementation.
// Return the number of rows in the section.
return RoundNumber.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
{
var cell : InsertRoundCell! = tableView.dequeueReusableCellWithIdentifier("InsertRoundCell") as! InsertRoundCell
if(cell == nil)
{
cell = NSBundle.mainBundle().loadNibNamed("InsertRoundCell", owner: self, options: nil)[0] as! InsertRoundCell;
}
let exerviseName = RoundNumber[indexPath.row]
let exerciseLabels = RoundLabel[indexPath.row]
let exerciseImage = RoundExercise[indexPath.row]
let exerciseImage_Holder = RoundExerciseImages[indexPath.row]
cell.insert_label_Round.text = exerviseName as? String
cell.addWorkout_Label.text = exerciseLabels as? String
cell.addExercise_Holder?.image = UIImage(named: exerciseImage_Holder as! String) as UIImage?
cell.addWorkoutBut.setBackgroundImage(UIImage(named: exerciseImage as! String) as UIImage?, forState: UIControlState.Normal)
cell.addWorkoutBut.tag = indexPath.row
cell.addWorkoutBut.addTarget(self, action: "logAction:", forControlEvents: .TouchUpInside)
cell.selectionStyle = UITableViewCellSelectionStyle.None
return cell as InsertRoundCell
}
@IBAction func logAction(sender: UIButton){
//self.RoundNumber.replaceObjectAtIndex(sender.tag, withObject: "Ezel")
//let titleString = self.RoundNumber[sender.tag] as? String
//Util.invokeAlertMethod("", strBody: titleString!, delegate: nil)
self.InsertRoundTable.reloadData()
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
let destinationVC = segue.destinationViewController as! ChoseExercise
destinationVC.id=sender.tag
RoundNumber_Count=sender.tag
}
@IBAction func unwinndChoseExercise(segue:UIStoryboardSegue){
if let svc = segue.sourceViewController as? ChoseExercise{
self.RoundLabel.replaceObjectAtIndex(RoundNumber_Count, withObject: "\(svc.exercise_label)")
self.RoundExercise.replaceObjectAtIndex(RoundNumber_Count, withObject: "providno")
self.RoundExerciseImages.replaceObjectAtIndex(RoundNumber_Count, withObject: "\(svc.exercise_image)")
self.InsertRoundTable.reloadData()
}
}
//Add Round
@IBAction func addRound(sender: AnyObject) {
if(RoundNumber_Add_Counter<12){
RoundNumber_Add_Counter++
self.RoundNumber.addObject("Round \(RoundNumber_Add_Counter)")
self.RoundLabel.addObject("")
self.RoundExercise.addObject("add-1")
self.RoundExerciseImages.addObject("providno")
self.InsertRoundTable.reloadData()
}else{
Util.invokeAlertMethod("", strBody: "This is the maximum number of rounds", delegate: nil)
}
}
}
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return self.exercisesNames.count
}
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCellWithReuseIdentifier("cellexercises_insert", forIndexPath: indexPath) as! Insert_ExerciseCollectionViewCell
cell.insert_exerciseImage?.image = self.exercisesImages[indexPath.row]
cell.insert_exerciseLabel?.text = self.exercisesNames[indexPath.row]
cell.insert_exercisesHardnessImg?.image = self.exercisesHardnessImg[indexPath.row]
return cell
}
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
exercise_label="\(exercisesNames[indexPath.row])"
exercise_image="\(exercises_Exervise_Row_Names[indexPath.row])"
dismissViewControllerAnimated(true, completion: nil)
}
答案 0 :(得分：0)
以下是放卷的工作原理：
首先，将您的IBAction展开（segue：UIStoryboardSegue）放在您打算返回的vc中（演示者vc，在这种情况下为InsertWorkout）。
其次，转到故事板并选择要放松的vc（本例中为集合视图），然后从导致展开的按钮/单元格（在您的情况下为集合视图单元格）中按住Ctrl键拖动到退出按钮在同一个vc之上，您应该会在“Selection Segue”下看到一个带有您的IBAction展开方法名称的弹出窗口。
第三，在当前的vc（在这种情况下为集合vc）中实现prepareforsegue以传回数据。
class InsertWorkout
{
IBAction func unwind(segue:UIStoryboardSegue) {
//use the data passed from prepare to update your ui or you can also communicate to the sender using segue.sourceVC
}
}
class CollectionVC
{
override func prepareForSegue(segue: UIStoryboadSegue, sender: AnyObject?){
if segue.identifier == "whatever you put in storyboard for segue id" {
if let inserWorkoutVC = segue.destinationViewController as? InsertWorkout {
//pass the data here but don't attempt to update your destination's view ui!!,
}
}
}
}