Swift-归档解归档

//从nsobject解析回来
init(coder aDecoder:NSCoder!){
self.name=aDecoder.decodeObjectForKey("name") as! String
self.phone=aDecoder.decodeObjectForKey("age") as! String
}

//编码成object
func encodeWithCoder(aCoder:NSCoder!){
aCoder.encodeObject(name,forKey:"name")
aCoder.encodeObject(phone,forKey:"age")
}

//保存数据
let data = NSMutableData()
let archiver = NSKeyedArchiver(forWritingWithMutableData: data)
archiver.encodeObject(userData,forKey: "userlist")
archiver.finishEncoding()
//数据写入
data.writeToFile(dataFilePath, atomically: true)

//读取数据
//获取本地数据文件地址
let path = self.dataFilePath()
//读取文件数据
let data = NSData(contentsOfFile: path)
//解码器
let unarchiver = NSKeyedUnarchiver(forReadingWithData: data!)
userList = unarchiver.decodeObjectForKey("userdata") as! Array
//结束解码
unarchiver.finishDecoding()