mplacona

<EditText
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:id="@ id/et_text"
   android:layout_alignParentTop="true"
   android:layout_alignParentLeft="true"
   android:layout_alignParentStart="true"
   android:layout_alignParentRight="true"
   android:layout_alignParentEnd="true" />
 

mplacona

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:id="@+id/holder_container"
    android:layout_centerVertical="true"
    android:paddingBottom="10dp"
    android:paddingTop="10dp"
    android:layout_height="wrap_content">

    <LinearLayout

mplacona

import java.util.Calendar;
import java.util.Date;
import java.util.UUID;
 
import io.realm.RealmModel;
import io.realm.annotations.PrimaryKey;
import io.realm.annotations.RealmClass;
 
@RealmClass
public class Note implements RealmModel {

mplacona

public class MainActivity extends AppCompatActivity {
  private Realm mRealm;
  private RealmConfiguration mRealmConfig;
  private EditText mText;
  private RealmRecyclerView mNotes;
 
  @Override
  protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.activity_main);

mplacona

FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View view) {
    if(mText.getText().length() > 0){
      insertNote(mText.getText().toString());
      mText.setText("");
      Snackbar.make(view, "Note added!", Snackbar.LENGTH_LONG)
     .setAction("Action", null).show();
    }

mplacona

private void insertNote(final String noteText) {
   mRealm.executeTransaction(new Realm.Transaction() {
       @Override
       public void execute(Realm realm) {
           Note note = new Note();
           note.setText(noteText);
           mRealm.copyToRealm(note);
       }
   });
}

mplacona

public class NoteRecyclerViewAdapter extends RealmBasedRecyclerViewAdapter<
           Note, NoteRecyclerViewAdapter.ViewHolder> {
  
   public NoteRecyclerViewAdapter(
           Context context,
           RealmResults<Note> realmResults) {
       super(context, realmResults, true, false);
   }

   public class ViewHolder extends RealmViewHolder {

mplacona

@Override
protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.activity_main);
 
   mRealmConfig = new RealmConfiguration
           .Builder(this)
           .build();
   Realm.setDefaultConfiguration(mRealmConfig);
   mRealm = Realm.getDefaultInstance();

mplacona

private void loadNotes() {
   RealmResults<Note> notes = mRealm.where(Note.class).findAllSorted("date", Sort.ASCENDING);
   NoteRecyclerViewAdapter noteAdapter = new NoteRecyclerViewAdapter(getBaseContext(), notes);
   mNotes.setAdapter(noteAdapter);
}

mplacona

public NoteRecyclerViewAdapter(
   Context context,
   RealmResults<Note> realmResults) {
   super(context, realmResults, true, true, true, "text");
}