iOS开发——数据持久化Swift篇&模型对象归档

模型对象归档

 import UIKit

 class ViewController: UIViewController {

     @IBOutlet weak var textField: UITextField!

     @IBAction func btnSave(sender: UIButton) {
         var text = textField.text as NSString
         var image = UIImage(named: "log")

         var textFilepath = getPath("data.txt")
         var person = Person()
         person.name =text
         person.log = image

         var data = NSKeyedArchiver.archivedDataWithRootObject(person)
         data.writeToFile(textFilepath, atomically: true)
     }

     @IBAction func btnLoad(sender: UIButton) {
         var textFilepath = getPath("data.txt")
         var person = NSKeyedUnarchiver.unarchiveObjectWithFile(textFilepath)  as Person
         textField.text = person.name
         textField.image = person.image

         println(log.image)
         println(person.name)
     }

     @IBOutlet weak var logImage: UIImageView!

     override func viewDidLoad() {
         super.viewDidLoad()

         /**
         Archive
         */

         /**
             UnArchive
         */

     }

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

     //获取文件目录
     func getPath(fileName:String)->String {
         var paths = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)
         var documents = paths[] as? String
         return documents!.stringByAppendingPathComponent(fileName)
     }

 }