User Management

At the core of many apps, there is a notion of user account management that lets users access their information in a secure manner. A specialized user class called ParseUser is available to automatically handles these kind of functionalities.

ParseUser is a subclass of the ParseObject, and has all the same features. All the methods that are on ParseObject also exist in ParseUser. The difference is that ParseUser has some special additions specific to user accounts.

Signing Up

Java

import com.parse.ParseException;
import com.parse.ParseUser;
import com.parse.SignUpCallback;

public void signUpUser(String username, String password, String email)
{
    ParseUser user = new ParseUser();
    
    user.setUsername(username);
    user.setPassword(password);
    user.setEmail(email);
    
    // other fields can be set just like with ParseObject
    user.put("phone", "650-253-0000");

    user.signUpInBackground(new SignUpCallback() 
    {
      public void done(ParseException e) 
      {
        if (e == null) 
        {
          // Hooray! Let them use the app now.
        } 
        else
        {
          // Sign up didn't succeed. Look at the ParseException
          // to figure out what went wrong
        }
      }
  });
  
}

Swift

import Parse
​
class testVC: UIViewController
{
    func SignUpUser(email:String, pwd:String)
    {
        let user = PFUser.init()
        user.username = "[email protected]"
        user.email = "[email protected]"
        user.password = "demo"
        
        user.signUpInBackground
        {
            (isConnect, error) in
            
            if let error = error
            {
                print (error.localizedDescription)
            }
            else
            {
                if isConnect
                {
                    print ("user connect")
                }
            }  
        }
    }
}

Logging In

Java

import com.parse.LogInCallback;
import com.parse.ParseException;
import com.parse.ParseUser;

public void logInUser(String username, String password)
{
    ParseUser.logInInBackground(username, password, new LogInCallback() 
    {
      public void done(ParseUser user, ParseException e)
      {
        if (user != null) 
        {
            // Hooray! The user is logged in.
        } 
        else 
        {
            // Signup failed. Look at the ParseException to see what happened.
        }
      }
    });
}

Swift

import Parse
​
class testVC: UIViewController
{
    ​
   func connectUser(email: String, password: String, completion:@escaping (_ isSuccess: Bool, _ error: String) -> Void)
    {
        PFUser.logInWithUsername (inBackground:email, password: password, block:
        {
            (User, error) -> Void in
                
            if ((error) != nil)
            {
                completion(false, error!.localizedDescription)
            }
            else
            {
                if let user = User
                {
                    print ("user = ", user.description)
                    completion(true, "User connected")
                }
                else
                {
                    completion(false, "User is empty")
                }
            }
        })
    }

}

Get current User

Java

import com.parse.ParseUser;

public void getUser()
{
    ParseUser currentUser = ParseUser.getCurrentUser();
    
    if (currentUser != null) 
    {
        // do stuff with the user
    } 
    else 
    {
        // show the signup or login screen
    }
}

Swift

import Parse

class testVC: UIViewController
{
    func getUser ()
    {
        let currentUser = PFUser.currentUser
    
        if currentUser != nil 
        {
            if currentUser!.isNew 
            {
                print ("is new user")
            }
        }
    }
}