2016-1-7第一个完整APP 私人通讯录的实现 5:保存数据

        if ([acount isEqualToString:@"zhangsan"]&&[password isEqualToString:@"123"]) {
            [self performSegueWithIdentifier:@"ContactsViewController" sender:nil];
            [MBProgressHUD showSuccess:@"登陆成功"];
//            在用户登录成功后，读取此时的开关信息，并根据情况将用户的账号或者密码存放在沙盒里
            NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
            [defaults setObject:self.acountField.text forKey:accountKey];
            if (self.remerberSwitch.on) {
            [defaults setObject:self.passwordField.text forKey:passwordKey];
            }
            [defaults synchronize];
        }else{
            [MBProgressHUD showError:@"账号密码错误"];
        }

- (void)viewDidLoad {
    [super viewDidLoad];
    self.loginBtn.enabled = NO;
//    从沙盒中读取用户关于开关的偏好设置
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    self.loginSwitch.on = [defaults boolForKey:autoLoginSwitchForKey];
    self.remerberSwitch.on = [defaults boolForKey:rememberPwdSwitchForKey];
//   根据已经读取到得开关的情况 从沙盒里读取用户账户或者密码
    self.acountField.text = [defaults objectForKey:accountKey];
    if (self.remerberSwitch.on) {
        self.passwordField.text =   [defaults objectForKey:passwordKey];
    }
    [self textChange];
//    判断自动登陆的开关是否打开，并自动登陆
//    if (self.loginSwitch.on) {
//        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
//            [self loginBtnClicked];
//        });
//    }

- (IBAction)rememberSwitchChange {
//    如果此时自动登陆开启，而记住密码为关闭，应该关闭自动登录
    if (self.loginSwitch.isOn == YES  && self.remerberSwitch.isOn == NO) {
        [self.loginSwitch setOn:NO animated:YES];
    }
//    保存开关数据到沙盒里去
    NSUserDefaults *defautls = [NSUserDefaults standardUserDefaults];
    [defautls setBool:self.remerberSwitch.on forKey:rememberPwdSwitchForKey];
    [defautls setBool:self.loginSwitch.on forKey:autoLoginSwitchForKey];
    [defautls synchronize];
    
}
- (IBAction)autoLoginSwitchChange {
//如果此时自动登陆开启，而记住密码为关闭，则应该打开记住密码
    if (self.remerberSwitch.isOn == NO && self.loginSwitch.isOn == YES) {
        [self.remerberSwitch setOn:YES animated:YES];
    }
    NSUserDefaults *defautls = [NSUserDefaults standardUserDefaults];
    [defautls setBool:self.remerberSwitch.on forKey:rememberPwdSwitchForKey];
    [defautls setBool:self.loginSwitch.on forKey:autoLoginSwitchForKey];
    [defautls synchronize];


}

//定义一个文件路径
@property (copy, nonatomic) NSString *contactPath;

//    懒加载联系人的文件路径
- (NSString *)contactPath
{
    if (!_contactPath) {
        NSString *doc = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
        _contactPath = [doc stringByAppendingPathComponent:@"contacts.acrhiver"];
    }
    return _contactPath;
}
- (NSMutableArray *)contacts
{
    if (!_contacts) {
//        先从沙盒中获取数据
        _contacts = [NSKeyedUnarchiver unarchiveObjectWithFile:self.contactPath];
//        NSLog(@"%d",self.contacts.count);
        //        0x7fe0085f94a0
//                0x7ff800fb3c40
        if (!_contacts) {
        NSMutableArray *contacts = [NSMutableArray array];
        _contacts = contacts;
       }
    }
    return  _contacts;
}

    //    同步数据到沙盒里去
    [NSKeyedArchiver archiveRootObject:self.contacts toFile:self.contactPath];