Create a Firebase user

public class SignUpActivity extends BaseAppCompatActivity {

    @BindView(R.id.tIETSignUpEmail)
    EditText mEditEmail;
    @BindView(R.id.tIETSignUpPassword)
    EditText mEditPassword;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    }

    @OnClick(R.id.btnSignUpSignUp)
    void signUp() {

        FormValidationUtils.clearErrors(mEditEmail, mEditPassword);

        if (FormValidationUtils.isBlank(mEditEmail)) {
            mEditEmail.setError("Please enter email");
            return;
        }

        if (!FormValidationUtils.isEmailValid(mEditEmail)) {
            mEditEmail.setError("Please enter valid email");
            return;
        }

        if (TextUtils.isEmpty(mEditPassword.getText())) {
            mEditPassword.setError("Please enter password");
            return;
        }

        createUserWithEmailAndPassword(mEditEmail.getText().toString(), mEditPassword.getText().toString());
    }

    private void createUserWithEmailAndPassword(String email, String password) {
        DialogUtils.showProgressDialog(this, "", getString(R.string.str_creating_account), false);
        mFirebaseAuth
                .createUserWithEmailAndPassword(email, password)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (!task.isSuccessful()) {
                            Toast.makeText(SignUpActivity.this, task.getException().getMessage(),
                                    Toast.LENGTH_SHORT).show();
                            DialogUtils.dismissProgressDialog();
                        } else {
                            Toast.makeText(SignUpActivity.this, R.string.str_registration_successful, Toast.LENGTH_SHORT).show();
                            DialogUtils.dismissProgressDialog();
                            startActivity(new Intent(SignUpActivity.this, HomeActivity.class));
                        }
                    }
                });
    }

    @Override
    protected int getLayoutResourceId() {
        return R.layout.activity_sign_up;
    }
}