ProgressDialog

<?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"
  >
<TextView
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="@string/hello"
  />
<ProgressBar
  android:id="@+id/progressbar"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  style="?android:attr/progressBarStyleHorizontal"
  android:max="100"
  android:progress="0"
  />
<Button
  android:id="@+id/start"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="- Start -"
  />
</LinearLayout>

package com.AndroidProgressDialog;

import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.SystemClock;
import android.view.View;
import android.widget.Button;
import android.widget.ProgressBar;

public class AndroidProgressDialog extends Activity {
 
 Button buttonStart;
 ProgressBar progressBar;
 ProgressDialog progressDialog;
 
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
      buttonStart = (Button)findViewById(R.id.start);
      progressBar = (ProgressBar)findViewById(R.id.progressbar);
    
      buttonStart.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View arg0) {
    // TODO Auto-generated method stub
    buttonStart.setClickable(false);
    new asyncTaskUpdateProgress().execute();
   }
       
      });
    
  }

  public class asyncTaskUpdateProgress extends AsyncTask<Void, Integer, Void> {

   int progress;
   
  @Override
  protected void onPostExecute(Void result) {
   // TODO Auto-generated method stub
   buttonStart.setClickable(true);
   progressDialog.dismiss();
  }

  @Override
  protected void onPreExecute() {
   // TODO Auto-generated method stub
   progress = 0;
   progressDialog = ProgressDialog.show(AndroidProgressDialog.this, "ProgressDialog", "Running");
  }

  @Override
  protected void onProgressUpdate(Integer... values) {
   // TODO Auto-generated method stub
   progressBar.setProgress(values[0]);
  }

  @Override
  protected Void doInBackground(Void... arg0) {
   // TODO Auto-generated method stub
   while(progress<100){
    progress++;
    publishProgress(progress);
    SystemClock.sleep(100); 
   }
   return null;
  }
   
  }
}