android - Getting 'Cannot resolve method 'addOnCompletionListener()'.......' while trying to place some code inside builder.setPositiveButton's onClick() method

Question

I'm trying to place some code inside AlertDialog.Builder's builder.setPositiveButton method.

The problem is that I'm getting the following error: Cannot resolve method 'addOnCompletionListener(anonymous android.content.DialogInterface.OnClickListener, anonymous com.google.android.gms.tasks.OnCompletionListener<com.google.firebase.auth.AuthResult>)

Here's the code:

    AlertDialog.Builder builder = new AlertDialog.Builder(SignUpActivity.this);
                builder.setTitle("Title");
                builder.setView(R.layout.customlayout);
                builder.setPositiveButton("Continue", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int i) {

//error from below line

                   mAuth.createUserWithEmailAndPassword(userEmail.getText().toString(), userPassword.getText().toString())
                                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                                    @Override
                                    public void onComplete(@NonNull Task<AuthResult> task) {
                                        Log.d("signUpSuccessful", "createUserWithEmail:onComplete:" + task.isSuccessful());

                                        // If sign in fails, display a message to the user. If sign in succeeds
                                        // the auth state listener will be notified and logic to handle the
                                        // signed in user can be handled in the listener.
                                        if (!task.isSuccessful()) {
                                            Snackbar snackbar = Snackbar
                                                    .make(coordinatorLayout, "Sign up failed. Please retry.", Snackbar.LENGTH_SHORT);
                                            snackbar.show();
                                        }

                                        // ...
                                    }
                                });

//upto this line
                    }
                });
                AlertDialog dialog = builder.create();
                dialog.show();

What's wrong here?

Please let me know.

Answer 1

Waitting for answers