Question

我对iOS开发很新，所以请好好:)我正在开发一个应用程序。 用户将通过填写只是一堆TextFields的表单进行注册。

一旦用户注册，他们将被重定向到他们的主页，其中UIImageView和UILabel将显示他们在注册时使用的数据。

现在我的问题是如何确保每次同一用户登录时此UIImageView和UILabel都会显示相同的数据。我使用NSUserDefaults尝试了此操作但是当用户登录时将显示我刚刚注册的用户数据。任何建议都很棒，我也在使用解析数据库。

以下是用户注册时的代码

    NSLog(@"Registering user");

    MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
    hud.labelText = @"Registering";

    PFObject *parent = [PFObject objectWithClassName:@"Parent"];
    UIImage *image = form.profilePhoto;
    NSData *imageData =  UIImageJPEGRepresentation(image, 0.6);
    PFFile *imageFile = [PFFile fileWithName:@"image.jpeg" data:imageData];

    parent[@"Name"] = form.name;
    parent[@"Email"] = form.email;
    parent[@"Password"] = form.password;
    parent[@"Location"] = form.location;
    parent[@"ImageFile"] = imageFile;

    [parent saveInBackground];

    [parent saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {

        if (!error) {
            [hud hide:YES];
            currentUser = YES;



            //saveData to parentUser
            NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
            [prefs setObject:form.name forKey:@"Name"];


            //Send user to parent home page
            PHomeViewController *lvc=[self.storyboard instantiateViewControllerWithIdentifier:@"Phome"];
            SlideNavigationController *navcontroller = [[SlideNavigationController alloc] initWithRootViewController:lvc];
            ParentMenu *leftMenu = (ParentMenu*)[self.storyboard instantiateViewControllerWithIdentifier: @"LeftMenuViewController"];

            [self.navigationController pushViewController:lvc animated:YES];

            navcontroller.leftMenu = leftMenu;

            //save data to nsuserdefualts
            NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
            UIImage *uploadPhoto = form.profilePhoto;
            [defaults setObject:form.name forKey:@"Name"];
            [defaults setObject:UIImageJPEGRepresentation(uploadPhoto, 0.6) forKey:@"ImageFile"];
            [defaults synchronize];
            NSLog(@"Data has been saved");
        }
        else {
            NSLog(@"There was an error in registration");
        }
    }];


}

}

这是用户登录时运行的代码

（IBAction）登录：（id）发件人{

MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
hud.labelText = @"Loading...";

PFQuery *query = [PFQuery queryWithClassName:@"Parent"];
[query whereKey:@"Email" equalTo:_Email.text];
[query whereKey:@"Password" equalTo:_Password.text];
[query getFirstObjectInBackgroundWithBlock:^(PFObject *object, NSError *error) {
    if (object) {
        NSLog(@"User logged in successfully");


        //Send user to parent home page
        PHomeViewController *lvc=[self.storyboard instantiateViewControllerWithIdentifier:@"Phome"];
        SlideNavigationController *navcontroller = [[SlideNavigationController alloc] initWithRootViewController:lvc];
        ParentMenu *leftMenu = (ParentMenu*)[self.storyboard instantiateViewControllerWithIdentifier: @"LeftMenuViewController"];

        [self.navigationController pushViewController:lvc animated:YES];
        navcontroller.leftMenu = leftMenu;



    } else {
        // LOGIN ERROR
        UIAlertView *ALERT = [[UIAlertView alloc]initWithTitle:@"Error" message:@"There was an error logging in please try again later." delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil];
        [ALERT show];

        _Email.text = [NSString stringWithFormat:@""];
        _Password.text = [NSString stringWithFormat:@""];
        [MBProgressHUD hideHUDForView:self.view animated:YES];
    }
}];

}

谢谢！

将textField数据保存到NSObject类中的属性

0 个答案: