Swift - 将plist文件读取到数组?

时间:2016-04-23 14:53:49

标签: arrays swift file nsarray nsbundle

我创建了一个从英语单词到西班牙语单词的迷你翻译。我想使用englishArray.plist而不是我的englishArray = [" cat"]我该如何创建它?

enter image description here

我还使用了localizable.strings来检索值" cat"为" el gato"但是我想从englishArray.plist

中检索这个

我从这开始,但不确定我是否在正确的道路上

let path = NSBundle.mainBundle().pathForResource("englishArray", ofType: "plist") 
let plistEnglishArray = NSArray(contentsOfFile: path!)

以下是我的其余代码:

var englishArray: [String] = ["rainbow", "boots", "heart", "leaf", "umbrella", "tired", "angry", "cry", "the cat" ]


override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    self.translateTextField.delegate = self
    picker.delegate = self
    picker.dataSource = self
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

@IBAction func translateButtonTapped(sender: UIButton) {

    let emptyString = self.translateTextField.text

    if (emptyString!.isEmpty) {

        print("please enter a word")

    }

    for transIndex in englishArray.indices {
        if englishArray[transIndex] == emptyString!.lowercaseString {

            //englishArray

            //translateLabel.text = "\(spanishArray[transIndex])"
            translateLabel.text = NSLocalizedString(emptyString!.lowercaseString, comment:"")


            print(emptyString)
            return

        }
    }
}

5 个答案:

答案 0 :(得分:8)

将您的root对象更改为Array,然后

var myEnglishArray: [String] = []
if let URL = NSBundle.mainBundle().URLForResource("englishArray", withExtension: "plist") {
      if let englishFromPlist = NSArray(contentsOfURL: URL) as? [String] {
        myEnglishArray = englishFromPlist
      }
    }

答案 1 :(得分:5)

Swift 4

您可以使用纯粹的swift类型的 Codable

首先从bundle加载Plist文件,然后使用PropertyListDecoder

完整代码 -

    func setData() {
        // location of plist file
        if let settingsURL = Bundle.main.path(forResource: "JsonPlist", ofType: "plist") {

            do {
                var settings: MySettings?
                let data = try Data(contentsOf: URL(fileURLWithPath: settingsURL))
                    let decoder = PropertyListDecoder()
                settings = try decoder.decode(MySettings.self, from: data)
                print("array  is \(settings?.englishArray ?? [""])")//prints array  is ["Good morning", "Good afternoon"]


            } catch {
                print(error)
            }
        }
    }
}
struct MySettings: Codable {

    var englishArray: [String]?

    init(from decoder: Decoder) throws {
        let values = try decoder.container(keyedBy: CodingKeys.self)
        englishArray = try values.decodeIfPresent([String].self, forKey: .englishArray)

    }
}

答案 2 :(得分:5)

Swift 4

The absolute simplest way to do this is

    let url = Bundle.main.url(forResource: "Sounds", withExtension: "plist")!
    let soundsData = try! Data(contentsOf: url)
    let myPlist = try! PropertyListSerialization.propertyList(from: soundsData, options: [], format: nil)

The object myPlist is an Array or Dictionary, whichever you used as the base of your plist.

答案 3 :(得分:0)

这将读取包中名为“englishArray.plist”的资源,并将其存储在不可变变量english中。在使用之前,您应该测试它是可选的。

它使用闭包来读取文件并返回数组,这使您可以使用不可变值而不是可以更改的可变变量。在任何地方使用不可变量都是一个好主意 - 它们可以促进稳定性。

import Foundation

let english:[String]? = {
  guard let URL = NSBundle
    .mainBundle()
    .URLForResource("englishArray", withExtension: "plist") else {
      return nil
  }
  return NSArray(contentsOfURL: URL) as? [String]
}()

答案 4 :(得分:0)

这是swift 3的解决方案。对于此解决方案,您不需要更改plist结构中的类型(保持Dictionary,Array,按原样)。另请注意,由于plist中的数组名称也是englishArray,因此第二个if语句中的(key for key)参数也是englishArray。

var myEnglishArray: [String] = []
   if let URL = Bundle.main.url(forResource: "englishArray", withExtension: "plist") {
      guard let englishFromPlist = NSDictionary(contentsOf: URL) else { return [] }
      if let englishArray = englishFromPlist.value(forKey: "englishArray") as? [String] {
         for myEnglish in englishArray {
            myEnglishArray.append(myEnglish)
         }
      }
   }
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