java.lang.NullPointerException [требует правки]

I know that this question is not a rare thing but nothing was helped me.

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
at com.example.olega.chosen.Fragments.Dialog1$1.onClick(Dialog1.java:53)

Mistake in line number 53 description.setText("");

As I understood right I didnt initialize it but then what is it EditText description = v.findViewById(R.id.description); EditText description;

  import static com.example.olega.chosen.R.layout.activity_fab;

public class Dialog1 extends DialogFragment {
    final String LOG_TAG = "myLogs";
    private static int SIGN_IN_REQUEST_CODE = 1;
    private FirebaseListAdapter<Message> adapter;
    RelativeLayout fragment_add_choice;
    Button confirm;
    EditText description;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        View v = inflater.inflate(activity_fab, container, false);
        getDialog().setTitle("Title!");
        fragment_add_choice = (RelativeLayout) v.findViewById(R.id.fragment_add_choice);
        Button confirm = v.findViewById(R.id.confirm);
        v.findViewById(R.id.confirm);
        confirm.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                Log.d(LOG_TAG, "Dialog 1: " + ((Button) v).getText());
                EditText description = v.findViewById(R.id.description);
                description.setText("");
                FirebaseDatabase.getInstance().getReference().push()
                        .setValue(new Message());
                displayChat();
                dismiss();
            }
        });
        return v;
    }
    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        Log.d(LOG_TAG, "Fragment1 onAttach");
    }

    private void displayChat() {
        ListView listMessages = fragment_add_choice.findViewById(R.id.listView);
        adapter = new FirebaseListAdapter<Message>(getActivity(), Message.class, R.layout.item, FirebaseDatabase.getInstance().getReference()) {
            @Override
            protected void populateView(View v, Message model, int position) {
                TextView textMessage, autor;
                textMessage = fragment_add_choice.findViewById(R.id.tvMessage);
                autor = fragment_add_choice.findViewById(R.id.tvUser);

                textMessage.setText(model.getTextMessage());
                autor.setText(model.getAutor());
            }
        };
        listMessages.setAdapter(adapter);
    }

    public void onDismiss(DialogInterface dialog) {
        super.onDismiss(dialog);
        Log.d(LOG_TAG, "Dialog 1: onDismiss");
    }
    public void onCancel(DialogInterface dialog) {
        super.onCancel(dialog);
        Log.d(LOG_TAG, "Dialog 1: onCancel");
    }
    public void onResume(){
        super.onResume();
        Window window = getDialog().getWindow();
        window.setLayout(1000, 750);
        window.setGravity(Gravity.CENTER);
    }
}

Thanks a lot in advance!!!