最近做了一个需求，将数据保存到沙盒中来实现数据持久化，写了一个manager，供参考：
import Foundation
class TaxiCertifyInfoManager {
// MARK: - Static
static let `dafault` = TaxiCertifyInfoManager()
// MARK: - Property
var identifyInfoModel = TaxiCertifyInfoModel()
// MARK: - Life Cycle
init() {
// getDataFromDocument()
}
// MARK: - Pulice Func
func save() {
// 保存至硬盘文件
let userNotificationSavedPath = "\(NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory,FileManager.SearchPathDomainMask.userDomainMask,true).first!)/\(UserManager.default.cid?.md5() ?? "")/identifyInfo.data"
NSKeyedArchiver.archiveRootObject(identifyInfoModel, toFile:userNotificationSavedPath)
}
///读取数据
func getDataFromDocument() {
let fileManager = FileManager.default
let localPath = "\(NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory,FileManager.SearchPathDomainMask.userDomainMask,true).first!)/\(UserManager.default.cid?.md5() ?? "")"
if !fileManager.fileExists(atPath: localPath) {
try? fileManager.createDirectory(atPath: localPath, withIntermediateDirectories: true, attributes: nil)
}
let userNotificationSavedPath = "\(NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory,FileManager.SearchPathDomainMask.userDomainMask,true).first!)/\(UserManager.default.cid?.md5() ?? "")/identifyInfo.data"
let identifyInfoM = NSKeyedUnarchiver.unarchiveObject(withFile:userNotificationSavedPath) as? TaxiCertifyInfoModel
// 填充注册信息
if identifyInfoM != nil {
IdentityVM.default.personalInfoVM.firstName = identifyInfoM?.first_name
IdentityVM.default.personalInfoVM.lastName = identifyInfoM?.last_name
IdentityVM.default.personalInfoVM.gender = identifyInfoM?.gender
IdentityVM.default.personalInfoVM.IDNumber = identifyInfoM?.id_card_no
IdentityVM.default.personalInfoVM.firstGetDriversLicenseDate = identifyInfoM?.get_license_date
IdentityVM.default.personalInfoVM.driversLicenseUrl = identifyInfoM?.license_img
IdentityVM.default.companyVM.cityModel?.province_name = identifyInfoM?.car_province_name
IdentityVM.default.companyVM.cityModel?.city_name = identifyInfoM?.car_city_name
IdentityVM.default.companyVM.companyModel?.id = identifyInfoM?.company_id
IdentityVM.default.companyVM.companyModel?.name = identifyInfoM?.company_name
if let str = identifyInfoM?.car_no {
IdentityVM.default.vehicleVM.vehicleFront = String(str.prefix(1))
IdentityVM.default.vehicleVM.locationAbbr = String(str[str.index(str.startIndex, offsetBy: 1)])
IdentityVM.default.vehicleVM.vehicleNumber = String(str[str.index(str.startIndex, offsetBy: 2)..下面是model的类，其中的encode和decode是第一次在swift中写。
@objc(notification) class TaxiCertifyInfoModel : NSObject, NSCoding {
var certify_state : IdentifyStatus? // 认证状态（0-未提交审核 1-审核中 2-审核失败 3-审核通过 4-停止服务(黑名单)）
/*第一页*/
var license_img : String? { // 驾照图片URL
didSet {
TaxiCertifyInfoManager.dafault.save()
}
}
var first_name : String? { // 真实姓
didSet {
TaxiCertifyInfoManager.dafault.save()
}
}
var last_name : String? { // 真实名
didSet {
TaxiCertifyInfoManager.dafault.save()
}
}
var gender : Int? { // 性别（1-男 2-女）
didSet {
TaxiCertifyInfoManager.dafault.save()
}
}
var id_card_no : String? { // 身份证号
didSet {
TaxiCertifyInfoManager.dafault.save()
}
}
var get_license_date : String? { // 初次领取驾照日期（yyyy-MM-dd）
didSet {
TaxiCertifyInfoManager.dafault.save()
}
}
/*第二页*/
var car_license_img: String? { // 行驶证图片URL
didSet {
TaxiCertifyInfoManager.dafault.save()
}
}
var car_no: String? { // 车牌号
didSet {
TaxiCertifyInfoManager.dafault.save()
}
}
var car_reg_date: String? { // 车辆注册日期（yyyy-MM-dd）
didSet {
TaxiCertifyInfoManager.dafault.save()
}
}
var car_owner: String? { // 车辆所有人
didSet {
TaxiCertifyInfoManager.dafault.save()
}
}
/*第三页*/
var car_province_name : String? { // 车辆所属省份
didSet {
TaxiCertifyInfoManager.dafault.save()
}
}
var car_district_name: String? { // 车辆所属地区
didSet {
TaxiCertifyInfoManager.dafault.save()
}
}
var company_name : String? { // 出租车公司名
didSet {
TaxiCertifyInfoManager.dafault.save()
}
}
var driver_permit_no:String? { // 准驾号码
didSet {
TaxiCertifyInfoManager.dafault.save()
}
}
var driver_permit_img: String? { // 准驾证图片URL
didSet {
TaxiCertifyInfoManager.dafault.save()
}
}
var car_photo: String? { // 人车合影URL
didSet {
TaxiCertifyInfoManager.dafault.save()
}
}
/*暂时不用*/
var car_district_id: Int? // 车辆所属地区id
var car_city_name: String? // 车辆所属城市
var company_id : Int? // 出租车公司id
func encode(with aCoder: NSCoder) {
aCoder.encode(certify_state, forKey: Constant.certify_state)
aCoder.encode(first_name, forKey: Constant.first_name)
aCoder.encode(last_name, forKey: Constant.last_name)
aCoder.encode(gender, forKey: Constant.gender)
aCoder.encode(id_card_no, forKey: Constant.id_card_no)
aCoder.encode(get_license_date, forKey: Constant.get_license_date)
aCoder.encode(license_img, forKey: Constant.license_img)
aCoder.encode(car_province_name, forKey: Constant.car_province_name)
aCoder.encode(car_district_id, forKey: Constant.car_district_id)
aCoder.encode(car_district_name, forKey: Constant.car_district_name)
aCoder.encode(car_city_name, forKey: Constant.car_city_name)
aCoder.encode(company_id, forKey: Constant.company_id)
aCoder.encode(company_name, forKey: Constant.company_name)
aCoder.encode(car_no, forKey: Constant.car_no)
aCoder.encode(car_reg_date, forKey: Constant.car_reg_date)
aCoder.encode(car_owner, forKey: Constant.car_owner)
aCoder.encode(car_license_img, forKey: Constant.car_license_img)
aCoder.encode(car_photo, forKey: Constant.car_photo)
aCoder.encode(driver_permit_no, forKey: Constant.driver_permit_no)
aCoder.encode(driver_permit_img, forKey: Constant.driver_permit_img)
}
override init() {
super.init()
}
required init?(coder aDecoder: NSCoder) {
super.init()
certify_state = aDecoder.decodeObject(forKey: Constant.certify_state) as? IdentifyStatus
first_name = aDecoder.decodeObject(forKey: Constant.first_name) as? String
last_name = aDecoder.decodeObject(forKey: Constant.last_name) as? String
gender = aDecoder.decodeObject(forKey: Constant.gender) as? Int
id_card_no = aDecoder.decodeObject(forKey: Constant.id_card_no) as? String
get_license_date = aDecoder.decodeObject(forKey: Constant.get_license_date) as? String
license_img = aDecoder.decodeObject(forKey: Constant.license_img) as? String
car_province_name = aDecoder.decodeObject(forKey: Constant.car_province_name) as? String
car_district_id = aDecoder.decodeObject(forKey: Constant.car_district_id) as? Int
car_district_name = aDecoder.decodeObject(forKey: Constant.car_district_name) as? String
car_city_name = aDecoder.decodeObject(forKey: Constant.car_city_name) as? String
company_id = aDecoder.decodeObject(forKey: Constant.company_id) as? Int
company_name = aDecoder.decodeObject(forKey: Constant.company_name) as? String
car_no = aDecoder.decodeObject(forKey: Constant.car_no) as? String
car_reg_date = aDecoder.decodeObject(forKey: Constant.car_reg_date) as? String
car_owner = aDecoder.decodeObject(forKey: Constant.car_owner) as? String
car_license_img = aDecoder.decodeObject(forKey: Constant.car_license_img) as? String
car_photo = aDecoder.decodeObject(forKey: Constant.car_photo) as? String
driver_permit_no = aDecoder.decodeObject(forKey: Constant.driver_permit_no) as? String
driver_permit_img = aDecoder.decodeObject(forKey: Constant.driver_permit_img) as? String
}
}