Sample Data in XML element like TextView, RecyclerView

Sample Data

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/white">
     <android.support.v7.widget.RecyclerView
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         tools:listitem="@layout/item_sample"
         android:layout_below="@+id/tv_sample_json"
         android:layout_marginTop="10dp"/>
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        tools:text="@sample/name_file"
        android:id="@+id/tv_sample"
        tools:textColor="@sample/file_color"
        android:layout_marginTop="10dp" />

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/tv_sample"
        android:id="@+id/tv_sample_json"
        tools:text="@sample/json_sample.json/data/name"
        android:layout_marginTop="10dp" />
</RelativeLayout>