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下面通过一个例子将联系人数据保存到沙盒的“documents”目录中。（联系人是一个数组集合，内部为自定义对象）。
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//从nsobject解析回来init(coder aDecoder:NSCoder!){ self.name=aDecoder.decodeObjectForKey("Name") as String self.phone=aDecoder.decodeObjectForKey("Phone") as String}//编码成objectfunc encodeWithCoder(aCoder:NSCoder!){ aCoder.encodeObject(name,forKey:"Name") aCoder.encodeObject(phone,forKey:"Phone")} |
--- ViewController.swift ---
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import UIKitclass ViewController: UIViewController { var dataModel = DataModel() override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. //初始化模拟数据 onCreateData() } //创建模拟数据 func onCreateData(){ dataModel.userList.append(UserInfo(name: "张三", phone: "1234")) dataModel.userList.append(UserInfo(name: "李四", phone: "1212")) dataModel.userList.append(UserInfo(name: "航歌", phone: "3525")) } //保存数据 @IBAction func saveData(sender:AnyObject) { dataModel.saveData() } //读取数据 @IBAction func loadData(sender:AnyObject) { dataModel.loadData() } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. }} |
--- DataModel.swift ---
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import UIKitclass DataModel: NSObject { var userList = [UserInfo]() override init(){ super.init() println("沙盒文件夹路径：\(documentsDirectory())") println("数据文件路径：\(dataFilePath())") } //保存数据 func saveData() { var data = NSMutableData() //申明一个归档处理对象 var archiver = NSKeyedArchiver(forWritingWithMutableData: data) //将lists以对应Checklist关键字进行编码 archiver.encodeObject(userList, forKey: "userList") //编码结束 archiver.finishEncoding() //数据写入 data.writeToFile(dataFilePath(), atomically: true) } //读取数据 func loadData() { //获取本地数据文件地址 let path = self.dataFilePath() //声明文件管理器 let defaultManager = NSFileManager() //通过文件地址判断数据文件是否存在 if defaultManager.fileExistsAtPath(path) { //读取文件数据 let data = NSData(contentsOfFile: path) //解码器 let unarchiver = NSKeyedUnarchiver(forReadingWithData: data!) //通过归档时设置的关键字Checklist还原lists userList = unarchiver.decodeObjectForKey("userList") as Array //结束解码 unarchiver.finishDecoding() } } //获取沙盒文件夹路径 func documentsDirectory()->String { var paths = NSSearchPathForDirectoriesInDomains( NSSearchPathDirectory.DocumentationDirectory,NSSearchPathDomainMask.UserDomainMask,true) var documentsDirectory:String = paths.first as String return documentsDirectory } //获取数据文件地址 func dataFilePath ()->String{ return self.documentsDirectory().stringByAppendingString("userList.plist") }} |
--- UserInfo.swift ---
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import UIKitclass UserInfo: NSObject { var name:String var phone:String //构造方法 init(name:String="",phone:String=""){ self.name = name self.phone = phone super.init() } //从nsobject解析回来 init(coder aDecoder:NSCoder!){ self.name=aDecoder.decodeObjectForKey("Name") as! String self.phone=aDecoder.decodeObjectForKey("Phone") as! String } //编码成object func encodeWithCoder(aCoder:NSCoder!){ aCoder.encodeObject(name,forKey:"Name") aCoder.encodeObject(phone,forKey:"Phone") }} |
Swift - 本地数据的保存与加载（使用NSCoder将对象保存到.plist文件）
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原文地址：http://www.cnblogs.com/Free-Thinker/p/4841063.html
