import UIKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let filePath = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory,NSSearchPathDomainMask.UserDomainMask,true)[0] + "/person.dat"
//归档
let data = NSMutableData()
let archiver = NSKeyedArchiver.init(forWritingWithMutableData: data)
let array = ["1","2","3"]
archiver.encodeObject(array,forKey:"arr")
archiver.encodeInt(20,forKey: "age")
archiver.finishEncoding()
data.writetoFile(filePath,atomically: true)
//反归档
let unarchiverData = NSData(contentsOfFile: filePath)
let unarchiver = NSKeyedUnarchiver.init(forReadingWithData: unarchiverData!)
let decodeData = unarchiver.decodeObjectForKey("arr") as! NSArray
let decodeAge = unarchiver.decodeIntForKey("age")
NSLog("%@",decodeData)
NSLog("%d",decodeAge)
}
}
1.在带键的归档中，每个归档字段都有一个key值，解归档时key值要与归档时key值匹配 2.带键归档可以一次存储多个对象 3.归档的对象是Foundation框架中的对象 4.归档和解归档其中任意对象都需要归档和解归档整个文件 5.归档后的文件是加密的，所以归档文件的扩展名可以随意取