如何将数据 CollectionViewCell 数组附加到 UIViewController 数组答案

【问题标题】：How to append data CollectionViewCell array to UIViewController array如何将数据 CollectionViewCell 数组附加到 UIViewController 数组
【发布时间】：2016-09-01 17:12:38
【问题描述】：

我在collectionviewcell 上添加了收藏按钮，用于将收藏的图像保存在另一个UIViewController 类中。
当我按下按钮时，其图像变为红色图像。我在CollectionViewCell 类中创建了按钮操作，我想在按下按钮时根据单元格索引路径将“数据”数组值或当前选定的索引值存储在UIViewController 类的“项目”数组中。

当我再次按下此按钮时，它会根据单元格索引路径从UIViewController 的“项目”数组中删除此索引路径的存储值。
主要问题是 ViewController 类型变量不是在 collectionviewcell 上创建的？
实际上，我正在尝试在另一个 CollectionView 中显示最喜欢的单元格数据，例如在 UIViewController 类中。

谁能告诉我该怎么做？

import UIKit
class LiveCollectionView: UIViewController, UICollectionViewDataSource, DrapDropCollectionViewDelegate {
    @IBOutlet var dragDropCollectionView: DragDropCollectionView!


    var objects : [Dictionary<String, String>] = [
        ["url" : "https://s3.amazonaws.com/kargopolov/BlueCafe.mp3", "image": "1.jpg"],
        ["url" : "https://s3.amazonaws.com/kargopolov/BlueCafe.mp3", "image": "2.jpg"],
        ["url" : "http://2016.downloadming1.com/bollywood%20mp3/Sanam%20Teri%20Kasam%20(2016)/02%20-%20Kheech%20Meri%20Photo%20-%20DownloadMing.SE.mp3", "image": "3.jpg"],
        ["url" : "http://2016.downloadming1.com/bollywood%20mp3/Sanam%20Teri%20Kasam%20(2016)/03%20-%20Bewajah%20-%20DownloadMing.SE.mp3", "image": "4.jpg"],
        ["url" : "http://2016.downloadming1.com/bollywood%20mp3/Sanam%20Teri%20Kasam%20(2016)/04%20-%20Tera%20Chehra%20-%20DownloadMing.SE.mp3", "image": "5.jpg"],
        ["url" : "http://2016.downloadming1.com/bollywood%20mp3/Sanam%20Teri%20Kasam%20(2016)/02%20-%20Kheech%20Meri%20Photo%20-%20DownloadMing.SE.mp3", "image": "6.jpg"],
        ["url" : "http://media.downloadming.se/TEMP/Loveshhuda%20(2015)/01%20-%20Mar%20Jaayen%20-%20DownloadMing.SE.mp3", "image": "5.jpg"],
        ["url" : "http://2016.downloadming1.com/bollywood%20mp3/Sanam%20Teri%20Kasam%20(2016)/01%20-%20Sanam%20Teri%20Kasam%20-%20DownloadMing.SE.mp3", "image": "7.jpg"]]

     override func viewDidLoad() {
        super.viewDidLoad()
        dragDropCollectionView.draggingDelegate = self
        dragDropCollectionView.enableDragging(true)
    }

    func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return objects.count
    }

    func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCellWithReuseIdentifier("collectionViewCell", forIndexPath: indexPath) as! LiveCollectionViewCell

        let object = objects[indexPath.row]
        cell.imageView.image = UIImage(named: object["image"]!)
        cell.data = object

        return cell
    }

    func dragDropCollectionViewDidMoveCellFromInitialIndexPath(initialIndexPath: NSIndexPath, toNewIndexPath newIndexPath: NSIndexPath) {
        let colorToMove = objects[initialIndexPath.row]
        objects.removeAtIndex(initialIndexPath.row)
        objects.insert(colorToMove, atIndex: newIndexPath.row)
}

}

import UIKit
class LiveCollectionViewCell: UICollectionViewCell{

    var showPlayButton = true

    var data : [String : String]!


    @IBOutlet weak var imageView: UIImageView!

    @IBOutlet weak var heartBt: UIButton!

    @IBAction func heartBt(sender: UIButton) {


        if showPlayButton {

            self.heartBt.setImage(UIImage(named: "rHeart"), forState: UIControlState.Normal)
            showPlayButton = false
            print(data)

        }
        else
        {
            self.heartBt.setImage(UIImage(named: "wHeart"), forState: UIControlState.Normal)
            showPlayButton = true

        }


    }

}

import UIKit

    class ViewController: UIViewController , UICollectionViewDelegate{

        var items : [Dictionary<String, String>]?

        let reuseIdentifier = "collectionViewCell"

        override func viewDidLoad(){

        }

        func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int
        {
            return self.items!.count
        }

        func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> CollectionViewCell
        {
            let cell = collectionView.dequeueReusableCellWithReuseIdentifier(reuseIdentifier, forIndexPath: indexPath) as! CollectionViewCell

            var object = items![indexPath.row]


            cell.imageView.image = UIImage(named: object["image"]!)

            return cell
        }


        }
*

【问题讨论】：

标签： ios swift uicollectionview

【解决方案1】：

尝试创建一个类来保存 URL 和状态（如果喜欢与否）。在Core Date 中保存此类对象的数组，然后在打开每个viewController时，将核心日期项加载到可以显示的数组中。并在您进行更改时将核心数据项保存到核心数据数据库中。

【讨论】：