ios - libgoogleanalyticsservices - protocolo sdk

Guardar datos en un archivo.plist en Swift

Question

Estoy tratando de guardar los datos en un archivo plist de forma rápida, pero los datos no se muestran como se guardaron cuando se leyó el archivo. Este es el código que estaba usando.

var documentsDirectory = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as NSString
var path : NSString = documentsDirectory.stringByAppendingPathComponent("data.plist")
var data : NSMutableDictionary = NSMutableDictionary(contentsOfFile: path)
data.setObject(self.object, forKey: "key")
data.writeToFile(path, atomically: true)

Edit: He oído que la mejor manera de hacerlo es escribir en el directorio de documentos, por lo que mi pregunta sería: ¿cómo debo escribir en un archivo en ese directorio?

Answer 1

Aparentemente el archivo no está en una ubicación de escritura, así que lo creé en el directorio de documentos.

var paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as String
var path = paths.stringByAppendingPathComponent("data.plist")
var fileManager = NSFileManager.defaultManager()
if (!(fileManager.fileExistsAtPath(path)))
{
    var bundle : NSString = NSBundle.mainBundle().pathForResource("data", ofType: "plist")
    fileManager.copyItemAtPath(bundle, toPath: path, error:nil)
}
data.setObject(object, forKey: "object")
data.writeToFile(path, atomically: true)

Luego, hay que leerlo desde el directorio de documentos.

var paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as String
var path = paths.stringByAppendingPathComponent("data.plist")
let save = NSDictionary(contentsOfFile: path)

Answer 2

Código swift actualizado de Rebeloper:

let BedroomFloorKey = "BedroomFloor"
let BedroomWallKey = "BedroomWall"
var bedroomFloorID: AnyObject = 101
var bedroomWallID: AnyObject = 101

 func saveGameData()
    {
        let paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true) as NSArray
        let documentsDirectory = paths.objectAtIndex(0) as! NSString
        let path = documentsDirectory.stringByAppendingPathComponent("GameData.plist")
        let dict: NSMutableDictionary = ["XInitializerItem": "DoNotEverChangeMe"]

        //saving values
        dict.setObject(bedroomFloorID, forKey: BedroomFloorKey)
        dict.setObject(bedroomWallID, forKey: BedroomWallKey)
        //...
        //writing to GameData.plist
        dict.writeToFile(path, atomically: false)
        let resultDictionary = NSMutableDictionary(contentsOfFile: path)
        print("Saved GameData.plist file is --> /(resultDictionary?.description)")

        self.loadGameData()

    }//eom


    func loadGameData() {
        // getting path to GameData.plist

        let paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true) as NSArray
        let documentsDirectory = paths[0] as! NSString
        let path = documentsDirectory.stringByAppendingPathComponent("GameData.plist")

//        let path = documentsDirectory.stringByAppendingPathComponent("GameData.plist")
        let fileManager = NSFileManager.defaultManager()

        //check if file exists
        if(!fileManager.fileExistsAtPath(path))
        {
            // If it doesn''t, copy it from the default file in the Bundle

            if let bundlePath = NSBundle.mainBundle().pathForResource("GameData", ofType: "plist")
            {
                let resultDictionary = NSMutableDictionary(contentsOfFile: bundlePath)
                print("Bundle GameData.plist file is --> /(resultDictionary?.description)")

                do
                {
                    try fileManager.copyItemAtPath(bundlePath, toPath: path)
                    print("copy")
                }
                catch _
                {
                    print("error failed loading data")
                }
            }
            else
            {
                print("GameData.plist not found. Please, make sure it is part of the bundle.")
            }
        }
        else
        {
            print("GameData.plist already exits at path.")
            // use this to delete file from documents directory
            //fileManager.removeItemAtPath(path, error: nil)
        }

        let resultDictionary = NSMutableDictionary(contentsOfFile: path)
        print("Loaded GameData.plist file is --> /(resultDictionary?.description)")
        let myDict = NSDictionary(contentsOfFile: path)

        if let dict = myDict {
            //loading values
            bedroomFloorID = dict.objectForKey(BedroomFloorKey)!
            bedroomWallID = dict.objectForKey(BedroomWallKey)!
            //...
        }
        else
        {
            print("WARNING: Couldn''t create dictionary from GameData.plist! Default values will be used!")
        }

    }//eom

Answer 3

Compruebe en Xcode 10 swift 4.1

//TODO: for wtite in .plist file
        let docsBaseURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
        let customPlistURL = docsBaseURL.appendingPathComponent("custom.plist")
        print(customPlistURL.absoluteString)
        let dic:[String:Any] = ["key":"val"]
        // Swift Dictionary To Data.
        do  {
        let data = try PropertyListSerialization.data(fromPropertyList: dic, format: PropertyListSerialization.PropertyListFormat.binary, options: 0)
            do {
                try data.write(to: customPlistURL, options: .atomic)
                print("Successfully write")
            }catch (let err){
                print(err.localizedDescription)
            }
        }catch (let err){
            print(err.localizedDescription)
        }

Answer 4

Use writeToFile:options:error: y vea lo que dice el error:

var error: NSError?
var bytes = NSKeyedArchiver.archivedDataWithRootObject(data)
if !bytes.writeToFile(path, options: nil, error: &error) {
    if let actualError = error {
        println(actualError)
    }
}

Answer 5

Swift 3:

func loadData() {
    let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true) as NSArray
    let documentDirectory = paths[0] as! String
    let path = documentDirectory.appending("myData.plist")
    let fileManager = FileManager.default
    if(!fileManager.fileExists(atPath: path)){
        if let bundlePath = Bundle.main.path(forResource: "myData", ofType: "plist"){
            let result = NSMutableDictionary(contentsOfFile: bundlePath)
            print("Bundle file myData.plist is -> /(result?.description)")
            do{
                try fileManager.copyItem(atPath: bundlePath, toPath: path)
            }catch{
                print("copy failure.")
            }
        }else{
            print("file myData.plist not found.")
        }
    }else{
        print("file myData.plist already exits at path.")
    }

    let resultDictionary = NSMutableDictionary(contentsOfFile: path)
    print("load myData.plist is ->/(resultDictionary?.description)")

    let myDict = NSDictionary(contentsOfFile: path)
    if let dict = myDict{
        myItemValue = dict.object(forKey: myItemKey) as! String?
        txtValue.text = myItemValue
    }else{
        print("load failure.")
    }
}

Leer y escribir archivo plist en swift

Answer 6

struct Plist {

enum PlistError: ErrorType {
    case FileNotWritten
    case FileDoesNotExist
}

let name:String

var sourcePath:String? {
    guard let path = NSBundle.mainBundle().pathForResource(name, ofType: "plist") else { return .None }
    return path
}

var destPath:String? {
    guard sourcePath != .None else { return .None }
    let dir = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0]
    return (dir as NSString).stringByAppendingPathComponent("/(name).plist")
}

init?(name:String) {

    self.name = name

    let fileManager = NSFileManager.defaultManager()

    guard let source = sourcePath else { return nil }
    guard let destination = destPath else { return nil }
    guard fileManager.fileExistsAtPath(source) else { return nil }

    if !fileManager.fileExistsAtPath(destination) {

        do {
            try fileManager.copyItemAtPath(source, toPath: destination)
        } catch let error as NSError {
            print("Unable to copy file. ERROR: /(error.localizedDescription)")
            return nil
        }
    }
}


func getValuesInPlistFile() -> NSDictionary?{
    let fileManager = NSFileManager.defaultManager()
    if fileManager.fileExistsAtPath(destPath!) {
        guard let dict = NSDictionary(contentsOfFile: destPath!) else { return .None }
        return dict
    } else {
        return .None
    }
}

func getMutablePlistFile() -> NSMutableDictionary?{
    let fileManager = NSFileManager.defaultManager()
    if fileManager.fileExistsAtPath(destPath!) {
        guard let dict = NSMutableDictionary(contentsOfFile: destPath!) else { return .None }
        return dict
    } else {
        return .None
    }
}

func addValuesToPlistFile(dictionary:NSDictionary) throws {
    let fileManager = NSFileManager.defaultManager()
    if fileManager.fileExistsAtPath(destPath!) {
        if !dictionary.writeToFile(destPath!, atomically: false) {
            print("File not written successfully")
            throw PlistError.FileNotWritten
        }
    } else {
        throw PlistError.FileDoesNotExist
    }
}
}

Ahora, implementa a continuación en tu controlador de vista.

        if let plist = Plist(name: "plist file name") {
        let dict = plist.getMutablePlistFile()!
        dict["key"] = value

        do {
            try plist.addValuesToPlistFile(dict)
        } catch {
            print(error)
        }
            print(plist.getValuesInPlistFile())
        } else {
           print("Unable to get Plist")
        }