Email verification for Firebase Auth UI

Question

I am using firebase auth UI (FirebaseUI-Android) in an android app, where the user can signup with personal email, Facebook, number<

Answer 1

@user2004685 answer above gives very good hint. But it does not work at least for the latest firebase-ui because currentUser.getProviderData().get(0).getProviderId() returns 'firebase'.

So the updated solution is

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

  if (requestCode == RC_SIGN_IN) {
    IdpResponse response = IdpResponse.fromResultIntent(data);

    /* Success */
    if (resultCode == RESULT_OK) {
        final FirebaseUser currentUser = mAuth.getCurrentUser();

        if(null != currentUser) {
            if(currentUser.getEmail()!=null) {
                if(!currentUser.isEmailVerified()) {
                    /* Send Verification Email */
                    currentUser.sendEmailVerification()
                        .addOnCompleteListener(this, new OnCompleteListener() {
                            @Override
                            public void onComplete(@NonNull Task task) {
                                /* Check Success */
                                if (task.isSuccessful()) {
                                    Toast.makeText(getApplicationContext(),
                                            "Verification Email Sent To: " + currentUser.getEmail(),
                                            Toast.LENGTH_SHORT).show();
                                } else {
                                    Log.e(TAG, "sendEmailVerification", task.getException());
                                    Toast.makeText(getApplicationContext(),
                                            "Failed To Send Verification Email!",
                                            Toast.LENGTH_SHORT).show();
                                }
                            }
                        });

                    /* Handle Case When Email Not Verified */
                }
            }

            /* Login Success */
            startActivity(new Intent(Login.this, MainActivity.class));
            finish();
            return;
        }
    } else {
        /* Handle Failure */
    }
  }
}

simply replace if("password".equals(currentUser.getProviderData().get(0).getProviderId())) with if(currentUser.getEmail()!=null)