RecyclerView Binding

activity_main.xml

<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

  <data>
    <import type="me.tatarka.bindingcollectionadapter2.LayoutManagers"/>
    <variable name="vm" type="com.example.MyViewModel"/>
  </data>

  <android.support.v7.widget.RecyclerView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:itemBinding="@{vm.itemBinding}"
    app:items="@{vm.items}"
    app:layoutManager ="@{LayoutManagers.linear()}" />

MyViewModel.java

package com.example.cain.mvvmexample;

import android.arch.lifecycle.ViewModel;
import me.tatarka.bindingcollectionadapter2.ItemBinding;
import me.tatarka.bindingcollectionadapter2.collections.DiffObservableList;


// See https://github.com/evant/binding-collection-adapter

public class MyViewModel extends ViewModel {

    public DiffObservableList<Item> items
            = new DiffObservableList<>(new DiffObservableList.Callback<Item>(){
        @Override
        public boolean areItemsTheSame(Item oldItem, Item newItem) {
            return oldItem.equals(newItem);
        }

        @Override
        public boolean areContentsTheSame(Item oldItem, Item newItem) {
            return oldItem.equals(newItem);
        }
    });

    public OnItemBind<Item> itemBinding = new OnItemBind<>() {
        @Override
        public void onItemBind(ItemBinding itemBinding, int position, Item item) {
            itemBinding.set(BR.item, (position % 2 == 0)
                    ? R.layout.even_item_layout : R.layout.odd_item_layout);
        }
    }
}