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

    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerViews"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </android.support.v7.widget.RecyclerView>


</FrameLayout>


____________________________________________________________________________________________________________________________________


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

    <TextView
        android:id="@+id/tv_number_item"
        style="@style/TextAppearance.AppCompat.Title"
        android:layout_width="389dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical|start"
        android:textAppearance="@style/TextAppearance.AppCompat" />


    <TextView
        android:id="@+id/tv_number_view_holder"
        style="@style/TextAppearance.AppCompat.Title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical|end"
        android:textAppearance="@style/TextAppearance.AppCompat" />

</FrameLayout>
______________________________________________________________________________________________________________________________________
package com.example.recyclerviewstest;


import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.widget.LinearLayout;

public class MainActivity extends AppCompatActivity {
    private RecyclerView numberList;
    private NumberAdapter numberAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        numberList = findViewById(R.id.recyclerViews);

        LinearLayoutManager layoutManager = new LinearLayoutManager(this);
        numberList.setLayoutManager(layoutManager);
        numberList.setHasFixedSize(true);

        numberAdapter = new NumberAdapter(100);
        numberList.setAdapter(numberAdapter);
    }
}