Change the look of the ProgressBar

<?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" >

<ProgressBar android:id="@+id/progressbar"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    style="@android:style/Widget.ProgressBar.Horizontal" />

</LinearLayout>

package com.java2s.myapplication3.app;
//  w ww  .j  av a2 s.  c  o m
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.ProgressBar;

public class MainActivity extends Activity {
    static int progress;
    ProgressBar progressBar;
    int progressStatus = 0;
    Handler handler = new Handler();

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        progress = 0;
        progressBar = (ProgressBar) findViewById(R.id.progressbar);
        progressBar.setMax(200);

        new Thread(new Runnable()
        {
            public void run()
            {
                while (progressStatus < 200)
                {
                    progressStatus = doSomeWork();
                    handler.post(new Runnable()
                    {
                        public void run() {
                            progressBar.setProgress(progressStatus);
                        }
                    });
                }
                handler.post(new Runnable()
                {
                    public void run()
                    {
                        progressBar .setVisibility(View.GONE);
                    }
                });
            }
            private int doSomeWork()
            {
                try {
                    Thread.sleep(500);
                } catch (InterruptedException e)
                {
                    e.printStackTrace();
                }
                return ++progress;
            }
        }).start();
    }
}