gistfile1.txt

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android">

    <data>
        <variable
            name="temp"
            type="com.vogella.android.databinding.TemperatureData" />
        <variable
            name="presenter"
            type="com.vogella.android.databinding.MainActivityPresenter"/>
    </data>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        >
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@={temp.location}"
            />
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@={temp.celsius}"
            />

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:text="@={temp.celsius}" />

        <Button
            android:text="Show data model"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="@{() -> presenter.onShowData(temp)}"
            android:id="@+id/button" />

        <Button
            android:text="Start second activity"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="@{() -> presenter.showList()}"
            />

    </LinearLayout>
</layout>

gistfile2.txt

package com.vogella.android.databinding;

import android.databinding.DataBindingUtil;
import android.databinding.ViewDataBinding;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.ViewGroup;

public abstract class MyBaseAdapter extends RecyclerView.Adapter<MyBaseAdapter.MyViewHolder> {

        // Provide a reference to the views for each data item
        // Complex data items may need more than one view per item, and
        // you provide access to all the views for a data item in a view holder
        public class MyViewHolder extends RecyclerView.ViewHolder {
                // each data item is just a string in this case
                private final ViewDataBinding binding;

                public MyViewHolder(ViewDataBinding binding) {
                        super(binding.getRoot());
                        this.binding = binding;
                }
                public void bind(Object obj) {
                       binding.setVariable(BR.obj,obj);
                       binding.executePendingBindings();
                }
        }

        @Override
        public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
                // create a new view
                LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
                ViewDataBinding binding = DataBindingUtil.inflate(layoutInflater, getLayoutIdForType(viewType), parent, false);
                // set the view's size, margins, paddings and layout parameters
                return new MyViewHolder(binding);
        }

        // Replace the contents of a view (invoked by the layout manager)
        @Override
        public void onBindViewHolder(MyViewHolder holder, int position) {
                holder.bind(getDataAtPosition(position));
        }
        
       
        
        public abstract Object getDataAtPosition(int position);

        public abstract int getLayoutIdForType(int viewType);

}