package net.blogjava.mobile;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.widget.ProgressBar;public class Main extends Activity{    private ProgressBar progressBar1;    private ProgressBar progressBar2;    private Handler handler = new Handler();    private int count1 = 0;    private int count2 = 0;    private Runnable doUpdateProgressBar1 = new Runnable()    {        @Override        public void run()        {            for (count1 = 0; count1 <= progressBar1.getMax(); count1++)            {                handler.post(new Runnable()                {                    @Override                    public void run()                    {                        progressBar1.setProgress(count1);                    }                });            }        }    };    private Runnable doUpdateProgressBar2 = new Runnable()    {        @Override        public void run()        {            for (count2 = 0; count2 <= progressBar2.getMax(); count2++)            {                handler.post(new Runnable()                {                    @Override                    public void run()                    {                        progressBar2.setProgress(count2);                    }                });            }        }    };    @Override    public void onCreate(Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        progressBar1 = (ProgressBar) findViewById(R.id.progressbar1);        progressBar2 = (ProgressBar) findViewById(R.id.progressbar2);        Thread thread1 = new Thread(doUpdateProgressBar1, "thread1");        thread1.start();        Thread thread2 = new Thread(doUpdateProgressBar2, "thread2");        thread2.start();    }}

<?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">    <ProgressBar android:id="@+id/progressbar1"        android:layout_width="fill_parent" android:layout_height="wrap_content"         style="?android:attr/progressBarStyleHorizontal" android:max="20000"        android:layout_marginTop="10dp" />    <ProgressBar android:id="@+id/progressbar2"        android:layout_width="fill_parent" android:layout_height="wrap_content"        style="?android:attr/progressBarStyleHorizontal" android:max="10000"        android:layout_marginTop="10dp"  /></LinearLayout>