How to check if an email address is already in use in Firebase on iOS?

user_5867445 0
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I'm using the Firebase Authentication for my iOS App. Now I want to check that the entered email address is available or not. I have found that I have to use createUserWithEmailAndPassword for this. But the issue is I don't want to pass Password. I only want to check using Email. How can I do this?

firebase-authentication firebase swift ios
6 Answers

The following is the structure of the Firebase function you might be looking for (Swift 4):

Auth.auth().fetchProviders(forEmail: emailAddress, completion: {
        (providers, error) in

        if let error = error {
            print(error.localizedDescription)
        } else if let providers = providers {
            print(providers)
        }
    })

If the email address is already registered to a user, you will get a list of the providers that the email address is used for. Otherwise, the list of providers will be empty, and thus the email address is not registered.

user_45274330

the following code is used for the swift5 with updated firebase version. Auth.auth().fetchSignInMethods(forEmail: emailAddress, completion: { (providers, error) in if let error = error { print(error.localizedDescription) } else if let providers = providers { print(providers) } })

user_57293770
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