Swift - read plist file to an array? - arrays

Question

I have created a mini translation from English words to Spanish words. I would like to use the englishArray.plist instead of my englishArray = ["the cat"] How can I create this?
I have also used a localizable.strings to retrieve the value "the cat" for "el gato" but I would like to retrieve this from englishArray.plist
I started off with this but not sure if I'm on the right path
let path = NSBundle.mainBundle().pathForResource("englishArray", ofType: "plist")
let plistEnglishArray = NSArray(contentsOfFile: path!)
Here is the rest of my code:
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
}
}
}

Answer 1

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.

Answer 2

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

Answer 3

Swift 4
You can use Codable which is pure swift type.
Firstly load Plist file from bundle then use PropertyListDecoder
Complete code -
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)
}
}

Answer 4

This will read a resource in your bundle with the name "englishArray.plist" and store it in the immutable variable english. It will be an Optional that you should test before using.
It uses a closure to read the file and return the array, this lets you use a immutable value rather than a mutable variable that can be changed. It's a good idea to use immutables wherever you can - they promote stability.
import Foundation
let english:[String]? = {
guard let URL = NSBundle
.mainBundle()
.URLForResource("englishArray", withExtension: "plist") else {
return nil
}
return NSArray(contentsOfURL: URL) as? [String]
}()

Answer 5

Here is the solution for swift 3. For this solution you do not need to change types in your plist structure (keep Dictionary, Array, as is). Also note that since your array's name in plist is also englishArray so the (value for key) argument in the second if statement is also 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)
}
}
}