안드로이드 데이그램 앱 따라하기 질문 [closed]

Question

https://codeasy.tistory.com/27?category=751342 해당 링크에서 따라하기 글을 작성하며 따라해봤는데요.

memo하는 XML파일이 없어서 질문합니당..

어떻게구성을해야할지...

MemoActivity 내용입니다.

MemoActivity를 작동할 activity_memo가 없습니다..

public class MemoActivity extends AppCompatActivity{
    int year, month, date;
    String memo;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_memo);
        Intent intent = getIntent();
        if (intent != null) {
            Calendar calendar = Calendar.getInstance();
            year = intent.getIntExtra("year", calendar.get(Calendar.YEAR));
            month = intent.getIntExtra("month", calendar.get(Calendar.MONTH));
            date = intent.getIntExtra("date", calendar.get(Calendar.DATE));
            memo = intent.getStringExtra("memo");
            if (!TextUtils.isEmpty(memo))
                etMemo.setText(memo);
        }
        Memo memo = new Memo();
        memo.setYear(year);
        memo.setMonth(month);
        memo.setDate(date);
        memo.setMemo(etMemo.getText().toString());

    }
    @OnClick(R.id.memo_save)
    public void onClickSave() {
        Calendar calendar = Calendar.getInstance();

        Memo memo = new Memo();
        memo.setYear(calendar.get(Calendar.YEAR));
        memo.setMonth(calendar.get(Calendar.MONTH)+1);
        memo.setDate(calendar.get(Calendar.DATE));
        memo.setMemo(etMemo.getText().toString());

        Realm realm = Realm.getDefaultInstance();
        realm.beginTransaction();
        realm.copyToRealm(memo);
        realm.commitTransaction();
        realm.close();
        finish();
    }
    public static Intent newIntent(Context context, int year, int month, int date, String memo) {
        Intent intent = new Intent(context, MemoActivity.class);
        intent.putExtra("year", year);
        intent.putExtra("month", month);
        intent.putExtra("date", date);
        intent.putExtra("memo", memo);
        return intent;

    }
}