package kr.co.naver;

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

public class SlotActivity extends Activity
  implements OnClickListener, Runnable {
    /** Called when the activity is first created. */
 private TextView display;
 private TextView display1;
 private TextView display2;
 CounterThread thread = null;
 private Handler handler = null;
 private boolean isStart = false;
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
        findViewById(R.id.button).setOnClickListener(this);
        display = (TextView)findViewById(R.id.txt1);
        display1 = (TextView)findViewById(R.id.txt2);
        display2 = (TextView)findViewById(R.id.txt3);
        handler = new Handler();
    }
   
 
 public void onClick(View v) {
  if( isStart == true ) {
   isStart = false;
   ((Button)v).setText( "Start ");
   
  } else {
   isStart = true;
   ((Button)v).setText( "Stop ");
   
   
  }
  if( thread == null) {
   thread = new CounterThread(this);
   thread.start();
   Toast.makeText(this,"start", Toast.LENGTH_SHORT ).show();
  }else {
   thread = new CounterThread(this);
   thread.stop();   
   Toast.makeText(this,"stop", Toast.LENGTH_SHORT ).show();
  }
  
  
 }
 
 public void run() {
  int n1, n2, n3;
  
  n1 = (int)Math.round(Math.random() * 10);
  n2 = (int)Math.round(Math.random() * 10);
  n3 = (int)Math.round(Math.random() * 10);
  display.setText("1st" +
    Integer.toString(n1));
  display1.setText("2nd" +
    Integer.toString(n2));
  display2.setText("3rd" +
    Integer.toString(n3));
 }
 
 public Handler getHandler() {
  return handler;
 }
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

package kr.co.naver;

import android.os.Handler;

public class CounterThread extends Thread {

 private SlotActivity owner;
 
 public CounterThread( SlotActivity obj){
  owner = obj;
 }
 public void run() {
  while( true ) {
   owner.getHandler().post( owner );
   
   try {
    sleep(1000);
   }catch(Exception e) {  }  
  }
 }

}
////////////////////////////////////////////////////////////////////////////////////////////////////////

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

    <TextView
        android:id="@+id/txt1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="" />
    <TextView
        android:id="@+id/txt2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="" />
    <TextView
        android:id="@+id/txt3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="" />
    <Button
        android:id="@+id/button"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textColor="#FFFFFF"
        android:text="start" />
   

</LinearLayout>

지금은 start로 누르면 난수가 발생해서 돌아가는 것만 나옵니다

여기서 stop을 누르면 멈추게 하려는데 어떻게 해야 되나요?