Android : Displaying a button in DisplayMessageActivity

Hello I am very new to android programming. I would like to get some help regarding displaying a button under a string message under an activity which has been newly activated. Hope someone can help me. Here is the code which I have for the class MyActivity which activates when the button app tutorial is pressed. The xml for my main activity is also there package com.example.sadi_ace.myfirstapp;

import android.content.Intent;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;


public class MyActivity extends ActionBarActivity {

    public final static String EXTRA_MESSAGE = "com.example.sadi_ace.myfirstapp.MESSAGE";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);


        setContentView(R.layout.activity_my);

        }


    /** Called when the user clicks the Send button */
    public void TutorialText(View view) {
        Intent intent = new Intent(this, DisplayMessageActivity.class);
        String message = "This is the android tutorial, if you want to pass on the to the " +
                "functions please press SKIP!";
        intent.putExtra(EXTRA_MESSAGE, message);
        startActivity(intent);



    }





  //  @Override
//    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
  //      getMenuInflater().inflate(R.menu.menu_my, menu);
    //    return true;
  //  }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

XML for main activity

<RelativeLayout 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"
    android:orientation="vertical"
    android:background="#800080"
    android:weightSum="1">


    <Button
        android:layout_width="150dp"
        android:layout_height="wrap_content"
        android:text="@string/button_tutorial"
        android:background="#FFFFFF"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true"
        android:onClick="TutorialText"
         />
</RelativeLayout>