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JiosDev
Asked:2020-04-15 02:15:17 +0800 CST2020-04-15 02:15:17 +0800 CST

替换数组中的匹配项

  • 772

文件内容。

1. @NAME1  прыгает через @NAME2#
2. Все игроки молчат.#
3. @NAME1 делает 10 отжиманий.#

我必须从第一行开始，当我在该行中找到@NAME1 或@NAME 2 时，我将其替换为玩家之前输入的名称。如果没有@NAME1，那么我会显示一个字符串并且没有菜单。等等。

以前，我可以从文件中读取一行，然后替换该行上的名称。每次单击按钮时，我都会得到一个随机字符串。

该方法看起来像这样。

func getDataFromFile(name: String , type:String) -> String {
    let pathFile = Bundle.main.path(forResource: name, ofType: type)
    let contentString = try! NSString(contentsOfFile: pathFile!, encoding: String.Encoding.utf8.rawValue)
    let  randomContent = contentString.components(separatedBy: ["#"]).randomElement()!.replacingOccurrences(of: "\"", with: "")
    return randomContent
}

然后就需要重做，以便顺序读取，方法就这样重做。

func getDataFromFile(name: String , type: String) -> [String] {
    let pathFile = Bundle.main.path(forResource: name, ofType: type)
    let contentString = try! NSString(contentsOfFile: pathFile!, encoding: String.Encoding.utf8.rawValue)
    let fullContent = contentString.components(separatedBy: ["#"]).map { $0.replacingOccurrences(of: "\"", with: "") }
    return fullContent
}

let stringsFromFile = getDataFromFile(name: "file", type: "txt")
stringsFromFile.forEach {
   $0.replacingOccurrences(of: "@NAME1", with: firstName!, options: .literal, range: nil)
   $0.replacingOccurrences(of: "@NAME2", with: secondName!, options: .literal, range: nil)

      playerLabel.text = $0
}

现在，由于某种原因，它向我显示了没有名称的一行，而当我尝试显示下一行时，什么也没有发生。

массивы

2 个回答

  1. 我检查了你的例子，它有错误

    • \n行没有显示，因为它们分别在行的开头包含换行符，当输出到标签时，行本身被换行并且不可见。
    • 修复了字符串中模板的替换

    我还添加了删除空行。

    此外，这里是每次单击按钮时显示然后从数组中删除行的逻辑。

    class ViewController: UIViewController {

    @IBOutlet var playerLabel: UILabel!

    var stringsFromFile = [String]()
    let firstName = "Name 1"
    let secondName = "Name 2"

    override func viewDidLoad() {
        super.viewDidLoad()

        loadStrings()
    }

    func loadStrings() {
        stringsFromFile = getDataFromFile(name: "file", type: "txt")
        stringsFromFile = stringsFromFile.map {
            var result = $0.replacingOccurrences(of: "@NAME1", with: firstName, options: .literal, range: nil)
            result = result.replacingOccurrences(of: "@NAME2", with: secondName, options: .literal, range: nil)
            return result
        }
    }

    func getDataFromFile(name: String , type: String) -> [String] {
        let pathFile = Bundle.main.path(forResource: name, ofType: type)
        let contentString = try! NSString(contentsOfFile: pathFile!, encoding: String.Encoding.utf8.rawValue)
        let fullContent = contentString.components(separatedBy: ["#"]).map { $0.replacingOccurrences(of: "\n", with: "") }.filter { !$0.isEmpty }
        return fullContent
    }

    @IBAction func nextRecordButtonTouchUpInside(_ sender: UIButton) {
        guard let firstString = stringsFromFile.first else {
            playerLabel.text = ""
            return
        }

        playerLabel.text = firstString
        stringsFromFile.removeFirst()
    }

}
    • 1
  2. Best Answer

    声明stringsFromFile为您孩子的财产UIViewController：

    let stringsFromFile = Self.getDataFromFile(name: "file", type: "txt")

    为了消除这一行中的编译错误，将其设为getDataFromFile(name:type:)静态：

    static func getDataFromFile(name: String , type: String) -> [String] {
    let pathFile = Bundle.main.path(forResource: name, ofType: type)
    let contentString = try! NSString(contentsOfFile: pathFile!, encoding: String.Encoding.utf8.rawValue)
    let fullContent = contentString.components(separatedBy: ["#"]).map { $0.replacingOccurrences(of: "\"", with: "") }
    return fullContent
}

    添加一个新属性var currentStringsFromFileIndex = 0以跟踪数组中的当前位置stringsFromFile。

    据我了解，您有一个按钮，通过单击stringsFromFile. 那么处理点击的函数应该有以下代码：

    @objc func onButtonTap(sender: UIButton) {
    guard stringsFromFile.indices.contains(currentStringsFromFileIndex) else { // Проверяем, существует ли элемент с индексом currentStringsFromFileIndex
        return
    }
    playerLabel.text = stringsFromFile[currentStringsFromFileIndex]
        .replacingOccurrences(of: "@NAME1", with: firstName!, options: .literal, range: nil)
        .replacingOccurrences(of: "@NAME2", with: secondName!, options: .literal, range: nil)
    currentStringsFromFileIndex += 1
}

    现在，当您单击按钮时，playerLabel显示的文本将发生变化。

    • 1

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