new Thread(){public void run(){sleep(***);}}.start();

public class A01Activity extends Activity { Button b; ProgressDialog pd;  /** Called when the activity is first created. */  @Override  public void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.main);    b=(Button)findViewById(R.id.b);    b.setOnClickListener(new OnClickListener(){  @Override  public void onClick(View v) {  // TODO Auto-generated method stub  final CharSequence dialogTitle=getString(R.string.dialogTitle);  final CharSequence dialogBody=getString(R.string.dialogBody);  pd=ProgressDialog.show(A01Activity.this, dialogTitle, dialogBody, true);  new Thread(){   public void run(){   try {    sleep(3000);   } catch (InterruptedException e) {    // TODO Auto-generated catch block    e.printStackTrace();   }   finally{    pd.dismiss();   }   }  }.start();  }  });  }}

TimerTask task = new TimerTask(){  public void run(){  //execute the task  }};Timer timer = new Timer();timer.schedule(task, delay);

new Handler().postDelayed(new Runnable(){  public void run() {  //execute the task  } }, delay);