18 Android ProgressBar

package com.progress.test;import android.app.Activity;import android.os.AsyncTask;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ProgressBar;public class ProgressBarActivity extends Activity {    /** Called when the activity is first created. */private ProgressBar progreeBar;private Button btn;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        progreeBar=(ProgressBar)findViewById(R.id.progressBar1);        btn=(Button)findViewById(R.id.button1);        progreeBar.setMax(100);        btn.setOnClickListener(new OnClickListener() {public void onClick(View v) {// TODO Auto-generated method stubnew MyTask().execute();}});                                    }        class MyTask extends AsyncTask<Void, Integer, Void>    {    @Override    protected void onProgressUpdate(Integer... values) {    // TODO Auto-generated method stub    super.onProgressUpdate(values);    progreeBar.setProgress(values[0]);    }@Overrideprotected Void doInBackground(Void... params) {// TODO Auto-generated method stubint i=1;while(i<1000){try {Thread.sleep(500);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}publishProgress(i);i++;}return null;}        }}