My rootViewController works and loads fine. However, when I call it using the present(viewControllerToPresent: UIViewController, animated: true, completion: nil) from another viewController I get nothing but a black screen.
I looked all over the stackOverflow but only found solutions for storyboard users. I am doing this programmatically
#objc func handleLogin() {
print("LOGIN BUTTON TOUCHED")
guard let email = emailTextField.text, let password = passwordTextField.text else {
print("Form is not valid.")
return
}
Auth.auth().signIn(withEmail: email, password: password) { (user, error) in
if error != nil {
print(error!)
return
}
let viewController = RootViewController()
*** self.present(viewController, animated: true, completion: nil)
print("Logged in")
}
}
There is nothing wrong with self.present(viewController, animated: true, completion: nil)
I think your RootViewController() is already presented. The black screen you see is might be the one without any data? I am not sure, will need your code for that class.
Another approach you can consider is to replace the real rootViewController from current uiWindow like this
#objc func handleLogin() {
print("LOGIN BUTTON TOUCHED")
guard let email = emailTextField.text, let password = passwordTextField.text else {
print("Form is not valid.")
return
}
Auth.auth().signIn(withEmail: email, password: password) { [weak self] (user, error) in
guard let strongSelf = self else { return }
guard error == nil else { return }
guard let user = user else { return }
UIApplication.shared.keyWindow?.rootViewController = RootViewController()
print("Logged in")
}
}
you've created a new instance(RootViewController) and it must be black .. your not referring to your RootViewController
Related
I am facing this error on build for the function shown in the code
Only instance methods can be declared #IBAction
this error is coming up only after I introduced google sign in method for similar functionality , earlier it not an error
#IBAction func SignInButtonAction(_ sender: Any) {
guard let email = emailField.text else { return }
guard let pass = passwordField.text else { return }
Auth.auth().signIn(withEmail: email, password: pass) { user, error in
if error == nil && user != nil {
let setupcheckref = Firestore.firestore().collection("users").document(Auth.auth().currentUser!.uid)
setupcheckref.getDocument{(document, error) in
if let document = document, document.exists{
let dataDescription = document.data().map(String.init(describing:)) ?? "nil"
self.checksetup = document.get("setupComplete") as! Bool
if self.checksetup == true {
if Auth.auth().currentUser!.isEmailVerified {
self.performSegue(withIdentifier: "toLoginFeed", sender: self)
}
else{
print("please verify your email")
try! Auth.auth().signOut()
}
}
else{
self.view.makeToast("Please Setup Your Account!", duration: 2.5)
self.performSegue(withIdentifier: "fromlogintosetup", sender: self)
SVProgressHUD.dismiss()
} }
}
// self.dismiss(animated: false, completion: nil)
} else {
print("Error logging in: \(error!.localizedDescription)")
// self.resetForm()
// SVProgressHUD.dismiss()
}
}
}
That means you can create #IBActions only as instance methods of a class.
You might be creating it of a class.
class VC: UIViewController {
#IBAction func SignInButtonAction(_ sender: Any) {
//your code...
}
}
I have question about window hierarchy. When I try to login or sign up and open the home page of app, I can't present other pages console error give that:
Warning: Attempt to present on whose view is not in the window hierarchy!
But when I re-open my app with same user everything working correctly. Here the code which is after create user process:
func createUser(withEmail email: String, password: String, username: String) {
Auth.auth().createUser(withEmail: email, password: password) { (result, error) in
if let error = error {
print("Failed to sign user up with error: ", error.localizedDescription)
return
}
guard let uid = result?.user.uid else { return }
let values = ["E-mail": email, "Kullanıcı Adı": username]
Database.database().reference().child("users").child(uid).updateChildValues(values, withCompletionBlock: { (error, ref) in
if let error = error {
print("Failed to update database values with error: ", error.localizedDescription)
return
}
let layout = UICollectionViewFlowLayout()
let homeController = HomeController(collectionViewLayout: layout)
let navController = UINavigationController(rootViewController: homeController)
self.present(navController, animated: false, completion: nil)
})
}
}
here the function which call top function:
#objc func handleSignUp() {
guard let email = emailTextField.text else { return }
guard let password = passwordTextField.text else { return }
guard let username = usernameTextField.text else { return }
createUser(withEmail: email, password: password, username: username)
}
Maybe your rootViewController is presenting another ViewController.
You can try :
if let presentedVC = self.presentedViewController {
presentedVC.present(navController, animated: false, completion: nil)
} else {
self.present(navController, animated: false, completion: nil)
}
I am trying to have my login function for firebase run after updating it, but the function is nil and I am getting the following messages:
Cannot create a URL to fetch a configuration with empty app instance ID or empty platform (app instance, platform): (nil), ios
[Firebase/Analytics][I-ACS023125] Unable to get configuration. Invalid server URL.
My code is as follows:
#IBAction func Login(sender: AnyObject) {
let email = self._Email.text!
let password = self._Password.text!
print("below is the email")
print(email)
print("below is the password")
print(password)
Auth.auth().createUser(withEmail: email, password: password) { (user, error) in
if error == nil {
print("Successful login")
if user!.isEmailVerified{
let vc = self.storyboard!.instantiateViewController(withIdentifier: "ProfileView") as! ProfileView
self.present(vc, animated: true, completion: nil)
} else {
print("nil is hitting")
}
} else {
print("Some nil error")
}
}
}
I am trying to run the login function for firebase, which worked fine, but after updating swift version it doesn't work. When I check both if the error is nil and not nil neither print statement runs, but the prints before and after does. Does anyone know why this would not be running, but also not throwing error?
Below is the code:
FIRAuth.auth()?.signIn(withEmail: email, password: password, completion: { user, error in
if error == nil {
print("Successful login")
if user!.isEmailVerified {
let vc = self.storyboard!.instantiateViewController(withIdentifier: "ProfileView") as! ProfileView
self.present(vc, animated: true, completion: nil)
} else {
print("nil is hitting")
}
}
})
print("done running login")
Use this Auth instead of FIRAuth.
Auth.auth().createUser(withEmail: email, password: password) { (user, error) in
// ...
}
To know more read
Firebase Documention
To signIn in Firebase, you need to use Auth instead FIRAuth
Auth.auth().signIn(withEmail: "email#email.com",
password: "123456") { (user, error) in
if error == nil {
print("successful login")
}
}
Auth.auth().signIn(withEmail: email!, password: password!) { (user, error) in
if let error = error { print("Enter Valid email and password")
}else{
if Auth.auth().currentUser!.isEmailVerified == true{
let vc = self.storyboard!.instantiateViewController(withIdentifier: "ProfileView") as! ProfileView
self.present(vc, animated: true, completion: nil)}}}
I'm trying to pass a property to my next VC using prepareforSegue. It is called, however my other VC does not load.
Original
#IBAction func onSignupPressed(sender: AnyObject) {
FBSDKLoginManager().logInWithReadPermissions(permissions,
fromViewController: self) { result, error in
guard error == nil else { print("Login Error"); return }
guard result.grantedPermissions.contains("email") else {
print("No Email Permissions"); return }
self.getFBUserData()
dispatch_async(dispatch_get_main_queue()) {
self.performSegueWithIdentifier("loginSegue", sender: self)
}
}
}
I've been able to get the next VC showing by doing calling my doLogin function below. And there I instantiate a VC from the storyboard and present it. I believe it is due to the timing of the Facebook login window that pops up and closes. I searched for a delegate method, but have not found anything
#IBAction func onSignupPressed(sender: AnyObject) {
FBSDKLoginManager().logInWithReadPermissions(permissions,
fromViewController: self) { result, error in
guard error == nil else { print("Login Error"); return }
guard result.grantedPermissions.contains("email") else {
print("No Email Permissions"); return }
self.getFBUserData()
dispatch_async(dispatch_get_main_queue()) {
self.performSegueWithIdentifier("loginSegue", sender: self)
}
}
}
func getFBUserData(){
let params = "id, name, first_name, last_name, picture.type(large),friends, email, birthday, work, photos, education, location, hometown, religion, likes, about"
if((FBSDKAccessToken.currentAccessToken()) != nil){
FBSDKGraphRequest(graphPath: "me", parameters: ["fields":params]).startWithCompletionHandler({ (connection, result, error) -> Void in
if (error == nil){
//everything works print the user data
print(result)
let resultdict = result as? NSDictionary
self.user = Mapper<User>().map(result)
self.doLogin()
}
})
}
}
func doLogin() {
let successVC = self.storyboard?.instantiateViewControllerWithIdentifier("LoginSucessViewController")
self.presentViewController(successVC!, animated: true, completion: nil)
}
Very silly mistake! Didn't realize I could simply set the property of instantiating the VC!
func doLogin() {
let successVC = self.storyboard?.instantiateViewControllerWithIdentifier("LoginSucessViewController") as! LoginSucessViewController
successVC.currentUser = user
self.presentViewController(successVC, animated: true, completion: nil)
}