Detect Touch Event

package com.TestSingleTouch;

import android.app.Activity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;

public class TestSingleTouch extends Activity {

TextView textEvent, textX, textY;

   /** Called when the activity is first created. */
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
       LinearLayout MainLayout = (LinearLayout)findViewById(R.id.mainlayout);
       textEvent = (TextView)findViewById(R.id.event);
       textX = (TextView)findViewById(R.id.x);
       textY = (TextView)findViewById(R.id.y);
      
       MainLayout.setOnTouchListener(OnTouchListener);
   }
  
   private View.OnTouchListener OnTouchListener
   = new View.OnTouchListener(){

 @Override
 public boolean onTouch(View view, MotionEvent motionEvent) {
  // TODO Auto-generated method stub
 
  textX.setText("x: " + String.valueOf(motionEvent.getX()));
  textY.setText("y: " + String.valueOf(motionEvent.getY()));
 
  int action = motionEvent.getAction();
 
  switch (action){
  case MotionEvent.ACTION_DOWN:
   textEvent.setText("ACTION_DOWN");
   break;
  case MotionEvent.ACTION_MOVE:
   textEvent.setText("ACTION_MOVE");
   break;
  case MotionEvent.ACTION_UP:
   textEvent.setText("ACTION_UP");
   break;
  case MotionEvent.ACTION_CANCEL:
   textEvent.setText("ACTION_CANCEL");
   break;
  default:
   textEvent.setText("Unknown!");
  }

  return true; //means event have been processed
 }
   
   };
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:orientation="vertical"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
   android:id="@+id/mainlayout"
   >
<TextView 
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="@string/hello"
   />
<TextView 
   android:id="@+id/event"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   />
<TextView 
   android:id="@+id/x"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   />
<TextView 
   android:id="@+id/y"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   />
</LinearLayout>

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