DrawerLayout with custom Layout/View

DrawerLayout with custom Layout/View

<android.support.v4.widget.DrawerLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <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:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        tools:context=".MainActivity" >

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="android-coding.blogspot.com" />
    </RelativeLayout>

    <LinearLayout 
        android:id="@+id/drawer"
        android:layout_width="200dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:orientation="vertical"
        android:background="@android:color/background_dark"
        android:padding="5dp" >
        
        <TextView 
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="android-coding"/>
        <Button
            android:id="@+id/drawerbutton"
         android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@android:color/background_light"
            android:text="Hello"/>
    </LinearLayout>

</android.support.v4.widget.DrawerLayout>

package com.example.androidnavigationdrawer;

import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {

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

  Button buttonHello = (Button)findViewById(R.id.drawerbutton);
  buttonHello.setOnClickListener(new OnClickListener(){

   @Override
   public void onClick(View arg0) {
    Toast.makeText(MainActivity.this, 
      "Hello Android-Coding", 
      Toast.LENGTH_LONG).show();
   }});
 }

}