Question

我有一个UICollectionView，它位于UITableViewCell中。我在UICollectionViewCell中有7个按钮。当我按下Button1时，数据应传递给另一个ViewController，但它不会。

// TableviewCell

import UIKit


class backgroundViewCell: UITableViewCell {

var dayName : String!
var audioFileURL : String!
 var tittle : String?

// guided collectionView
@IBOutlet var collectionView: UICollectionView!


let data = ["1","2","3","4","5","6","7"]

let images = ["circleblank","circleblank","circleblank","circleblank","circleblank","circleblank","circleblank"]

@IBOutlet var Labeltittle: UILabel!
@IBOutlet var LabelDetail: UILabel!
@IBOutlet var iconview: UIImageView!

 extension backgroundViewCell : UICollectionViewDataSource, UICollectionViewDelegate {

func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return 7
}

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell1", for: indexPath) as! CollectionViewCell

    cell.Label.text = data[indexPath.row]
    cell.ImageView.image = UIImage(named: images[indexPath.row])

    let bgColorView = UIView()
    bgColorView.backgroundColor = UIColor.clear

    var imageView : UIImageView
   imageView  = UIImageView(frame:CGRect(x :4.1,y : 3.9, width:        cell.ImageView.frame.size.width, height : cell.ImageView.frame.size.height));
    imageView.image = UIImage(named : "blankoval")


    bgColorView.addSubview(imageView)


    cell.selectedBackgroundView = bgColorView

    return cell
}

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    print("Collection view at row \(collectionView.tag) selected index path \(indexPath.row)")
    switch (indexPath.row) {
    case 0:

        dayName = "Day 1"

       self.audioFileURL = musicUrlFile.Day1
        break
    case 1:
    self.audioFileURL = musicUrlFile.Day2
        dayName = "Day 2"

        break
    case 2:
    self.audioFileURL = musicUrlFile.Day3
        dayName = "Day 3"

        break
    case 3:
    self.audioFileURL = musicUrlFile.Day4
        dayName = "Day 4"

        break
    case 4:

       self.audioFileURL = musicUrlFile.Day5
        dayName = "Day 5"

        break
    case 5:
      self.audioFileURL = musicUrlFile.Day6
        dayName = "Day 6"

        break
    default:
        self.audioFileURL = musicUrlFile.Day7
        dayName = "Day 7"
        break

    }

 }

}
}

// TableViewController

import UIKit

class PlayerGuidedTableViewController: UITableViewController {


var audioFileURL : String!
var dayName : String!




// MARK: - Table view data source

override func numberOfSections(in tableView: UITableView) -> Int {
    // #warning Incomplete implementation, return the number of sections
    return 1
}

override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    // #warning Incomplete implementation, return the number of rows
    return 1
}

override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {

    return 600
}


override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> backgroundViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "guidedPlayerCell") as! backgroundViewCell

    cell.selectionStyle = .none
    cell.playPauseButton.addTarget(self, action: #selector(PlayerGuidedTableViewController.playPauseButtonAction), for: .touchUpInside)


    return cell
}



 override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "MainPlayer" {
        if let collectionCell: backgroundViewCell = sender as? backgroundViewCell {
            if let collectionView: UICollectionView = collectionCell.superview as? UICollectionView {
                if let playerVC = segue.destination as? playerGuidedViewController {


                    playerVC.Day = dayName
                    playerVC.UrlAudio = audioFileURL
                }
            }
        }
    }
}

//    override func prepare(for segue: UIStoryboardSegue, sender: Any?)    {
//        if segue.identifier == "guidedMainPlayer" {
//            
//            let playerVC = segue.destination as! playerGuidedViewController

//            playerVC.Day = dayName
//            playerVC.UrlAudio = audioFileURL
//            
//            
//        }
//    }
}



}

Answer 1

在这里，我将展示如何将数据从tablecell传递到viewcontroller：基本上，您必须将viewcontroller实例传递给tablecell，然后才能访问viewcontroller

中tablecell个实例的所有属性和方法

import UIKit


class backgroundViewCell: UITableViewCell {
var vcInstance: PlayerGuidedTableViewController?
var dayName : String!
var audioFileURL : String!
 var tittle : String?

// guided collectionView
@IBOutlet var collectionView: UICollectionView!


let data = ["1","2","3","4","5","6","7"]

let images = ["circleblank","circleblank","circleblank","circleblank","circleblank","circleblank","circleblank"]

@IBOutlet var Labeltittle: UILabel!
@IBOutlet var LabelDetail: UILabel!
@IBOutlet var iconview: UIImageView!

 extension backgroundViewCell : UICollectionViewDataSource, UICollectionViewDelegate {

func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return 7
}

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell1", for: indexPath) as! CollectionViewCell

    cell.Label.text = data[indexPath.row]
    cell.ImageView.image = UIImage(named: images[indexPath.row])

    let bgColorView = UIView()
    bgColorView.backgroundColor = UIColor.clear

    var imageView : UIImageView
   imageView  = UIImageView(frame:CGRect(x :4.1,y : 3.9, width:        cell.ImageView.frame.size.width, height : cell.ImageView.frame.size.height));
    imageView.image = UIImage(named : "blankoval")


    bgColorView.addSubview(imageView)


    cell.selectedBackgroundView = bgColorView

    return cell
}

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    print("Collection view at row \(collectionView.tag) selected index path \(indexPath.row)")
    switch (indexPath.row) {
    case 0:

        dayName = "Day 1"

       self.audioFileURL = musicUrlFile.Day1
        break
    case 1:
    self.audioFileURL = musicUrlFile.Day2
        dayName = "Day 2"

        break
    case 2:
    self.audioFileURL = musicUrlFile.Day3
        dayName = "Day 3"

        break
    case 3:
    self.audioFileURL = musicUrlFile.Day4
        dayName = "Day 4"

        break
    case 4:

       self.audioFileURL = musicUrlFile.Day5
        dayName = "Day 5"

        break
    case 5:
      self.audioFileURL = musicUrlFile.Day6
        dayName = "Day 6"

        break
    default:
        self.audioFileURL = musicUrlFile.Day7
        dayName = "Day 7"
        break

    }

 }
vcInstance.dayName = dayName
}
}

您可以将数据从单元格传递到viewcontroller

import UIKit

class PlayerGuidedTableViewController: UITableViewController {


var audioFileURL : String!
var dayName : String!




// MARK: - Table view data source

override func numberOfSections(in tableView: UITableView) -> Int {
    // #warning Incomplete implementation, return the number of sections
    return 1
}

override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    // #warning Incomplete implementation, return the number of rows
    return 1
}

override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {

    return 600
}


override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> backgroundViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "guidedPlayerCell") as! backgroundViewCell
    cell.vcInstance = self
    cell.selectionStyle = .none
    cell.playPauseButton.addTarget(self, action: #selector(PlayerGuidedTableViewController.playPauseButtonAction), for: .touchUpInside)


    return cell
}



 override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "MainPlayer" {
        if let collectionCell: backgroundViewCell = sender as? backgroundViewCell {
            if let collectionView: UICollectionView = collectionCell.superview as? UICollectionView {
                if let playerVC = segue.destination as? playerGuidedViewController {


                    playerVC.Day = dayName
                    playerVC.UrlAudio = audioFileURL
                }
            }
        }
    }
}

//    override func prepare(for segue: UIStoryboardSegue, sender: Any?)    {
//        if segue.identifier == "guidedMainPlayer" {
//            
//            let playerVC = segue.destination as! playerGuidedViewController

//            playerVC.Day = dayName
//            playerVC.UrlAudio = audioFileURL
//            
//            
//        }
//    }
}



}

Answer 2

audioFileURL课程内您不需要dayName和PlayerGuidedTableViewController个变量。

class PlayerGuidedTableViewController: UITableViewController {

    var audioFileURL : String!  //delete this
    var dayName : String!       //delete this
    ...
    ...
}

将prepare(for:sender:)方法替换为：

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "MainPlayer" {
        if let backgroundViewCell = sender as? backgroundViewCell {
            if let playerVC = segue.destination as? playerGuidedViewController {
                playerVC.Day = backgroundViewCell.dayName
                playerVC.UrlAudio = backgroundViewCell.audioFileURL
            }
        }
    }
}

如何将数据从UICollectionViewCell（在UITableviewCell内）传递到另一个UIViewcontroller Swift3

2 个答案: