How to change email in firebase auth?

Question

I am trying to change/update a user\'s email address using :

firebase.auth().changeEmail({oldEmail, newEmail, password}, cb)

But I am getti

Answer 1

You can do this directly with AngularFire2, you just need to add "currentUser" to your path.

this.af.auth.currentUser.updateEmail(email)
.then(() => {
  ...
});

You will also need to reauthenticate the login prior to calling this as Firebase requires a fresh authentication to perform certain account functions such as deleting the account, changing the email or the password.

For the project I just implemented this on, I just included the login as part of the change password/email forms and then called "signInWithEmailAndPassword" just prior to the "updateEmail" call.

To update the password just do the following:

this.af.auth.currentUser.updatePassword(password)
.then(() => {
  ...
});

Answer 2

If someone is looking for updating a user's email via Firebase Admin, it's documented over here and can be performed with:

admin.auth().updateUser(uid, {
  email: "modifiedUser@example.com"
});

Answer 3

You're looking for the updateEmail() method on the firebase.User object: https://firebase.google.com/docs/reference/js/firebase.User#updateEmail

Since this is on the user object, your user will already have to be signed in. Hence it only requires the password.

Simple usage:

firebase.auth()
    .signInWithEmailAndPassword('you@domain.com', 'correcthorsebatterystaple')
    .then(function(userCredential) {
        userCredential.user.updateEmail('newyou@domain.com')
    })

Answer 4

updateEmail needs to happen right after sign in due to email being a security sensitive info
Example for Kotlin

 // need to sign user in immediately before updating the email 
        auth.signInWithEmailAndPassword("currentEmail","currentPassword")
        .addOnCompleteListener(this) { task ->
                if (task.isSuccessful) {
                    // Sign in success now update email                
                    auth.currentUser!!.updateEmail(newEmail)
                        .addOnCompleteListener{ task ->
                        if (task.isSuccessful) {
               // email update completed
           }else{
               // email update failed
                    }
       }
       } else {
                    // sign in failed
                }
            }