Display a Progress Dialog

package com.java2s.app;
//  w ww  .j  a  v  a  2 s  .  c o m
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;

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

        final ProgressDialog dialog = ProgressDialog.show(
                this, "Doing something", "Please wait...", true);
        new Thread(new Runnable() {
            public void run() {
                try {
                    //---simulate doing something lengthy---
                    Thread.sleep(5000);
                    dialog.dismiss();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }).start();
    }
}