Custom Twitter Parse Login in Swift - ios

Question

I want to create custom view controller twitter Parse login. I do not want to use default "loginViewController" fields provided by Parse. I also want to extract user's screen name and profile picture from twitter and save it in Parse. Here is my code.
//SignInController for custom Parse SignIn
import UIKit
import Foundation
import Parse
import ParseUI
class SignInController: UIViewController {
#IBOutlet weak var fbLogin: UIButton! //Facebook login button
#IBOutlet weak var TwitterLogin: UIButton! //Twitter login button
#IBOutlet weak var username: UITextField!
#IBOutlet weak var password: UITextField!
#IBOutlet weak var SignIn: UIButton! //Custom SignIn button for Parse
#IBOutlet weak var signUp: UIButton! //Custom SignUp button for Parse
var actInd: UIActivityIndicatorView=UIActivityIndicatorView (frame: CGRectMake(0, 0, 150, 150)) as UIActivityIndicatorView
override func viewDidLoad() {
super.viewDidLoad()
//Do additional setup after loading the view.
self.actInd.center=self.view.center
self.actInd.hidesWhenStopped=true
self.actInd.activityIndicatorViewStyle=UIActivityIndicatorViewStyle.Gray
view.addSubview(self.actInd)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
//Dispose any resourses that can be recreated.
}
#IBAction func FBLoginAction(sender: AnyObject) {
//Facebook login
}
#IBAction func TwitterLoginAction(sender: AnyObject) {
//Here I want to implement twitter login
}
//Custom Parse SignIn
#IBAction func SignInAction(sender: AnyObject) {
var usernamefield=self.username.text
var passwordfield=self.password.text
if (count(usernamefield.utf16)<4 || count(passwordfield.utf16)<5)
{
alert("Invalid", message: "Username must be greater than 4 and password must be greater than 5")
}
else
{
self.actInd.startAnimating()
PFUser.logInWithUsernameInBackground(usernamefield, password: passwordfield, block: { (user, error) -> Void in
self.actInd.stopAnimating()
if((user) != nil)
{
self.alert("Success", message: "Logged In")
}
else
{
self.alert("Error", message: "\(error)")
}
})
}
}
//Create Account or SignUp Controller
class CreatAccount: UIViewController {
#IBOutlet weak var username: UITextField!
#IBOutlet weak var email: UITextField!
#IBOutlet weak var password: UITextField!
#IBOutlet weak var confirmPassword: UITextField!
#IBOutlet weak var signUp: UIButton!
var actInd: UIActivityIndicatorView=UIActivityIndicatorView (frame: CGRectMake(0, 0, 150, 150)) as UIActivityIndicatorView
override func viewDidLoad() {
super.viewDidLoad()
//Do additional setup after loading the view.
self.actInd.center=self.view.center
self.actInd.hidesWhenStopped=true
self.actInd.activityIndicatorViewStyle=UIActivityIndicatorViewStyle.Gray
view.addSubview(self.actInd)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
//Dispose any resourses that can be recreated.
}
//Custom Parse SignUp
#IBAction func signUpAction(sender: AnyObject) {
var usernamefield=self.username.text
var passwordfield=self.password.text
var emailfield=self.email.text
var confirmpasswordfield=self.confirmPassword.text
if (count(usernamefield.utf16)<4 || count(passwordfield.utf16)<5 || count(confirmpasswordfield.utf16)<5 )
{
alert("Invalid", message: "Username must be greater than 4 and password must be greater than 5")
}
else if(count(emailfield.utf16)<8)
{
alert("Invalid", message: "Please enter a valid email")
}
else if(passwordfield != confirmpasswordfield )
{
alert("Invalid", message: "Passwords mismatch")
}
else
{
self.actInd.startAnimating()
var newUser=PFUser()
newUser.username=usernamefield
newUser.password=passwordfield
newUser.email=emailfield
newUser.signUpInBackgroundWithBlock({ (succeed, error) -> Void in
self.actInd.stopAnimating()
if((error) != nil )
{
self.alert("Invalid", message: "\(error)")
}
else
{
self.alert("Success", message: "Signed Up")
}
})
}
}

Answer 1

Here is my answer for my question. Check TwitterLoginAction.
import UIKit
import Foundation
import Parse
import ParseUI
class SignInController: UIViewController
{
#IBOutlet weak var fbLogin: UIButton!
#IBOutlet weak var TwitterLogin: UIButton!
#IBOutlet weak var username: UITextField!
#IBOutlet weak var password: UITextField!
#IBOutlet weak var SignIn: UIButton!
#IBOutlet weak var signUp: UIButton!
var actInd: UIActivityIndicatorView=UIActivityIndicatorView (frame: CGRectMake(0, 0, 150, 150)) as UIActivityIndicatorView
override func viewDidLoad() {
super.viewDidLoad()
//Do additional setup after loading the view.
self.actInd.center=self.view.center
self.actInd.hidesWhenStopped=true
self.actInd.activityIndicatorViewStyle=UIActivityIndicatorViewStyle.Gray
view.addSubview(self.actInd)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
//Dispose any resourses that can be recreated.
}
#IBAction func FBLoginAction(sender: AnyObject) {
}
#IBAction func TwitterLoginAction(sender: AnyObject) {
PFTwitterUtils.logInWithBlock { (user, error) -> Void in
if (user==nil) {
println(user)
println("Uh oh. The user cancelled the Twitter login.")
return;
} else if ((user?.isNew) != nil) {
println("User signed up and logged in with Twitter!")
} else {
println("User logged in with Twitter!")
}
}
}
//Parse SignIn
#IBAction func SignInAction(sender: AnyObject) {
var usernamefield=self.username.text
var passwordfield=self.password.text
if (count(usernamefield.utf16)<4 || count(passwordfield.utf16)<5)
{
alert("Invalid", message: "Username must be greater than 4 and password must be greater than 5")
}
else
{
self.actInd.startAnimating()
PFUser.logInWithUsernameInBackground(usernamefield, password: passwordfield, block: { (user, error) -> Void in
self.actInd.stopAnimating()
if((user) != nil)
{
self.alert("Success", message: "Logged In")
}
else
{
self.alert("Error", message: "\(error)")
}
})
}
}
}

Answer 2

Here is the code for Twitter Login in Swift 3
PFTwitterUtils.logIn { (user, error) in
if (user==nil) {
print("Uh oh. The user cancelled the Twitter login.")
} else if ((user?.isNew) != nil) {
print("User signed up and logged in with Twitter!")
} else {
print("User logged in with Twitter!")
}
}