How to provide authentication link to signup user in Firebase?

Question

I want firebase to send a link to the user to authenticate email. I don't know which link to provide in the function below, while I do not have a website to insert its URL..

ActionCodeSettings actionCodeSettings =
    ActionCodeSettings.newBuilder()
        // URL you want to redirect back to. The domain (www.example.com) for this
        // URL must be whitelisted in the Firebase Console.
        .setUrl("https://www.example.com/finishSignUp?cartId=1234")
        // This must be true
        .setHandleCodeInApp(true)
        .setIOSBundleId("com.example.ios")
        .setAndroidPackageName(
            "com.example.android",
            true, /* installIfNotAvailable */
            12    /* minimumVersion */)
        .build();

It also says in the above code comment that URL must be whitelisted, how can I create the email and add it to the firebase whitelisted links?

I appreciate your kind help.

Thanks in advance.

Answer 1

To resolve that check the official documentations

https://firebase.google.com/docs/auth/android/email-link-auth

Good luck,

Answer 2

Athentication -> sign-in method -> Domains treated

.setUrl("https://Domains treated/finishSignUp")

Settings -> General -> Package name

.setAndroidPackageName(
                        "Package name",
                        true,
                        "null")

Here you have st more completed: https://droidmentor.com/password-less-email-firebase-auth/