swift - 您将在 Swift for XML 中的何处包含替换事件？

Question

我正在尝试显示一个简单的数组。我已经解析了所有内容，但是我想使用 replacingOccurrences 将成分显示在另一个下面，问题是我不确定将其放入代码中的位置。

一些效果:

let newString = RecipeIngredients.replacingOccurrences(of: ", ", with: "\n")

我只是不确定在哪里包含此行

我认为它位于 XML 解析器代码中的某个位置，但我没有运气。

食谱.xml

<dish>
    <title> Pancakes </title>
    <calories> 350 calories </calories>
    <ingredients> ing 1, ing 2, ing 3 </ingredients>
</dish>

XMLParse.swift

struct Recipes {
  var title = ""
  var calories = ""
  var ingredients = ""
}

RecipeTableViewController.swift

class RecipeTableViewController: UITableViewController, XMLParserDelegate {

@IBOutlet var myTableView: UITableView!

var tableViewDataSource = [Recipes]()

var thisName = ""
var recipeTitle = ""
var recipeCalories = ""
var recipeIngredients = ""

override func viewDidLoad() {
    super.viewDidLoad()

    myTableView.dataSource = self
    myTableView.delegate = self

    if let path =  Bundle.main.url(forResource: "Recipes", withExtension: "xml") {
        if let parser = XMLParser(contentsOf: path) {
            parser.delegate = self
            parser.parse()
        }
    }
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()

}

// Table View Delegates

override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

    return tableViewDataSource.count
}

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)

    let titleLabel = cell.viewWithTag(11) as! UILabel
    let caloriesLabel = cell.viewWithTag(12) as! UILabel

    titleLabel.text = tableViewDataSource[indexPath.row].title
    caloriesLabel.text = tableViewDataSource[indexPath.row].calories

    return cell
}

override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    let Storyboard = UIStoryboard(name: "Main", bundle: nil)
    let resultsVC = Storyboard.instantiateViewController(withIdentifier: "ResultsViewController") as! ResultsViewController

    // Information to be passed to ResultsViewController
    resultsVC.getTitle = tableViewDataSource[indexPath.row].title
    resultsVC.getIngredients = tableViewDataSource[indexPath.row].ingredients

    // Push to next view
    self.navigationController?.pushViewController(resultsVC, animated: true)

}

override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
    return 100
}

// XML Parser

func parser(_ parser: XMLParser, didStartElement elementName: String, namespaceURI: String?, qualifiedName qName: String?, attributes attributeDict: [String : String] = [:]) {
    thisName = elementName

    if elementName == "dish" {
        var recipeTitle = ""
        var recipeCalories = ""
        var recipeIngredients = ""
    }
}

func parser(_ parser: XMLParser, foundCharacters string: String) {
    let data = string.trimmingCharacters(in: CharacterSet.whitespacesAndNewlines)

    if data.count != 0 {
        switch thisName
        {
            case "title": recipeTitle = data
            case "calories": recipeCalories = data
            case "ingredients": recipeIngredients = data
            default:
                break
        }
    }
}

func parser(_ parser: XMLParser, didEndElement elementName: String, namespaceURI: String?, qualifiedName qName: String?) {
    if elementName == "dish" {
        var recipe = Recipes()
        recipe.title = recipeTitle
        recipe.calories = recipeCalories
        recipe.ingredients = recipeIngredients

        print(recipe)
        tableViewDataSource.append(recipe)
    }
}
}

print(recipe) 返回:食谱(标题:“薄煎饼”，卡路里:“350卡路里”，成分:“ing 1，ing 2，ing 3”)

我知道这可以作为数组来完成，但我也想弄清楚这种格式。谢谢!

Answer 1

为需要的人解决了我自己的问题

case "ingredients":
      recipeIngredients = data
      recipeIngredients = recipeIngredients.replacingOccurrences(of: ", ", with: "\n")