使用核心数据将单元格添加到收藏夹 tableview [英] Add cell to favorites tableview with core data

问题描述

我有一个 iOS 应用，我想让人们在 tableview 单元格上滑动以将该单元格添加到收藏夹页面 tableview.

I have an iOS app that I would like to have people swipe on a tableview cell to add that cell to the favorites page tableview.

它必须使用核心数据，以便在应用退出后保存收藏夹.

It would have to use core data so that the favorites save after app exit.

任何帮助将不胜感激！

这是我到目前为止的单元格滑动操作:

This is what I have so far for the cell swipe action:

override func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]? {

    let favorite = UITableViewRowAction(style: .Normal, title: "Favorite") { (action, indexPath) in
        // share item at indexPath
        self.editing = false
        print("Favorited \(indexPath.row)")


    }

    favorite.backgroundColor = UIColor.greenColor()

    return [favorite]
}

这是我的收藏夹页面代码.

This is my code for the favorites page.

var favorites : [String] = []

override func viewDidLoad() {
    super.viewDidLoad()
    favorites = vars.favs
    self.tableView.reloadData()
}



override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return favorites.count
}

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath)
    let object = favorites[indexPath.row]
    cell.textLabel!.text = object 
    return cell
}

这是如何添加收藏夹的图片:

This is a picture of how the favorites will be added:

推荐答案

如果您需要将收藏夹列表作为字符串保存在您的应用程序中，您或许可以简单地使用 NSUserDefaults 而不是核心数据.

If a list of favourites as Strings is all you need to persist in your app, you might be able to simply use NSUserDefaults instead of Core Data.

要保存一系列收藏夹:

let favorite = UITableViewRowAction(style: .Normal, title: "Favorite") { (action, indexPath) in
    var favorites : [String] = []
    let defaults = NSUserDefaults.standardUserDefaults()
    if let favoritesDefaults : AnyObject? = defaults.objectForKey("favorites") {
        favorites = favoritesDefaults! as [String]
    }

    favorites.append(tableView.cellForRowAtIndexPath(indexPath).textLabel!.text)
    defaults.setObject(favorites, forKey: "favorites")
    defaults.synchronize()
}

要阅读收藏夹页面中的收藏夹数组:

To read the array of favorites in your favorites page:

var favorites : [String] = []

override func viewDidLoad() {
    super.viewDidLoad()

    let defaults = NSUserDefaults.standardUserDefaults()
    if let favoritesDefaults : AnyObject? = defaults.objectForKey("favorites") {
        favorites = favoritesDefaults! as [String]
    }

    self.tableView.reloadData()
}

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