How can I create login and sign up using phone number with firebase android studio?

Question

Is it possible to make Android app login with a phone number and password (not email and password) using Firebase Realtime Database?

Answer 1

There is a phone number sign-in method in firebase authentication where users can login with phone number and otp.

Answer 2

Yes it is possible.

First add your project to Firebase. Follow this You need to integrate firebase sdk for your app.

implementation 'com.google.firebase:firebase-auth:19.1.0'

Enable phone number authentication in Firebase console.

Use this code to send a sms for authentication.

PhoneAuthProvider.getInstance().verifyPhoneNumber(
    phoneNumber,        // Phone number to verify
    60,                 // Timeout duration
    TimeUnit.SECONDS,   // Unit of timeout
    this,               // Activity (for callback binding)
    mCallbacks);        // OnVerificationStateChangedCallbacks

For callback and more info, Read the official documentation