菜单的程序控件出现和消失

@Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);  Button menuButton = (Button) findViewById(R.id.menuButton);
  menuButton.setOnClickListener(new View.OnClickListener() {
   public void onClick(View v) {
    openOptionsMenu();
   }
  });
 } /**
  * {@inheritDoc}
  */
 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
  super.onCreateOptionsMenu(menu);  menu.add("Painting");
  menu.add("Photos");
  menu.add("Science");  // Return true so that the menu gets displayed.
  return true;
 } /**
  * {@inheritDoc}
  */
 @Override
 public boolean onPrepareOptionsMenu(Menu menu) {
  
  Timer timing = new Timer();
  timing.schedule(new TimerTask() {   /**
    * {@inheritDoc}
    */
   @Override
   public void run() {
    closeOptionsMenu();
   }
  }, 10000);
  return super.onPrepareOptionsMenu(menu);
 }