password reset swift 4 firebase - swift

Hey guys so I'm doing registration form with Swift 4 and using Firebase.
I'm stuck on reseting the password. Whenever I click on the button "forget password" I should get a pop up window with textField to fill in my email address. But when I do click nothing happens. Posting code below if anyone have some ideas what can be wrong with it
#IBAction func forgotPasswordTapped(_ sender: Any) {
let forgotPasswordAlert = UIAlertController(title: "Forgot password?", message: "Enter email address", preferredStyle: .alert)
forgotPasswordAlert.addTextField { (textField) in
textField.placeholder = "Enter email address"
}
forgotPasswordAlert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
forgotPasswordAlert.addAction(UIAlertAction(title: "Reset Password", style: .default, handler: { (action) in
let resetEmail = forgotPasswordAlert.textFields?.first?.text
Auth.auth().sendPasswordReset(withEmail: resetEmail!, completion: { (error) in
if error != nil{
let resetFailedAlert = UIAlertController(title: "Reset Failed", message: "Error: \(String(describing: error?.localizedDescription))", preferredStyle: .alert)
resetFailedAlert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
self.present(resetFailedAlert, animated: true, completion: nil)
}else {
let resetEmailSentAlert = UIAlertController(title: "Reset email sent successfully", message: "Check your email", preferredStyle: .alert)
resetEmailSentAlert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
self.present(resetEmailSentAlert, animated: true, completion: nil)
}
})
}))
}


As a quick answer, you are simply forgetting to present your forgotPasswordAlert. The fix is simple:
#IBAction func forgotPasswordTapped(_ sender: Any) {
let forgotPasswordAlert = UIAlertController(title: "Forgot password?", message: "Enter email address", preferredStyle: .alert)
forgotPasswordAlert.addTextField { (textField) in
textField.placeholder = "Enter email address"
}
forgotPasswordAlert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
forgotPasswordAlert.addAction(UIAlertAction(title: "Reset Password", style: .default, handler: { (action) in
let resetEmail = forgotPasswordAlert.textFields?.first?.text
Auth.auth().sendPasswordReset(withEmail: resetEmail!, completion: { (error) in
if error != nil{
let resetFailedAlert = UIAlertController(title: "Reset Failed", message: "Error: \(String(describing: error?.localizedDescription))", preferredStyle: .alert)
resetFailedAlert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
self.present(resetFailedAlert, animated: true, completion: nil)
}else {
let resetEmailSentAlert = UIAlertController(title: "Reset email sent successfully", message: "Check your email", preferredStyle: .alert)
resetEmailSentAlert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
self.present(resetEmailSentAlert, animated: true, completion: nil)
}
})
}))
//PRESENT ALERT
self.present(forgotPasswordAlert, animated: true, completion: nil)
}
As a small aside, you'll want to make sure you are presenting your confirmation alerts on the main queue to avoid unexpected behavior. Perhaps the sendPasswordReset does this automatically, but I do not believe this to be the case. Additionally, the better way of getting the error description to present to the user is with optional binding (using if let).
Auth.auth().sendPasswordReset(withEmail: resetEmail!, completion: { (error) in
//Make sure you execute the following code on the main queue
DispatchQueue.main.async {
//Use "if let" to access the error, if it is non-nil
if let error = error {
let resetFailedAlert = UIAlertController(title: "Reset Failed", message: error.localizedDescription, preferredStyle: .alert)
resetFailedAlert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
self.present(resetFailedAlert, animated: true, completion: nil)
} else {
let resetEmailSentAlert = UIAlertController(title: "Reset email sent successfully", message: "Check your email", preferredStyle: .alert)
resetEmailSentAlert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
self.present(resetEmailSentAlert, animated: true, completion: nil)
}
}
})


For swift 4.2
import Firebase
// MARK: Firebase Forgotpassword
func callFIRPasswordReset(){
//show loader
Auth.auth().sendPasswordReset(withEmail: self.txtEmail.text!) { (error) in
DispatchQueue.main.async {
//hide loader
self.txtEmail.text = ""
if let error = error {
//show alert here
print(error.localizedDescription)
}
else {
//show alert here
print("We send you an email with instructions on how to reset your password.")
}
}
}
}

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enter image description here

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I solved my question as following:
let arraySelect = ["NewYork", "Washington", "Seoul", "Tokyo", "Peking", "Sidney", ... ]
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)
}

I have the same problem too and found the method below which saved me.
But be careful if the item in array are the same, it will return the first item's index.
Fortunately, It's work in this case, because we create the action and using action to search.
extension Array where Self.Element : Equatable {
...
#inlinable public func index(of element: Element) -> Int?
...
}
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let alert = UIAlertController(title: nil, message: nil, preferredStyle: .alert)
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if let idx = alert.actions.index(of: action) {
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}))
}
// Add cancel button.
alert.addAction(UIAlertAction(title: "취소", style: .cancel, handler: {(_) in }))
self.present(alert, animated: true, completion: nil)

This is working good:
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let alert = UIAlertController(title: nil, message: nil, preferredStyle: .Alert)
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let index = alert.actions.indexOf(action)
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let alertController = UIAlertController(title: "Email?", message: "Please input your email:", preferredStyle: .alert)
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