Titanium.Android.Menu

activity.onCreateOptionsMenu = function(e) {
    var menu = e.menu;
    var menuItem = menu.add({ title: "Item 1" });
    menuItem.setIcon("item1.png");
    menuItem.addEventListener("click", function(e) {
        Ti.API.debug("I was clicked");
    });
};

var win = Ti.UI.createWindow({ fullscreen: true });</p>
<p>var LOGIN = 1, LOGOUT = 2;
var loggedIn = false;
activity.onCreateOptionsMenu = function(e) {
    var menu = e.menu;
    var login = menu.add({ title: "Login", itemId: LOGIN });
    login.setIcon("login.png");
    login.addEventListener("click", function(e) {
        loggedIn = true;
    });
    var logout = menu.add({ title: "Logout", itemId: LOGOUT });
    logout.setIcon("logout.png");
    logout.addEventListener("click", function(e) {
        loggedIn = false;
    });
};</p>
<p>activity.onPrepareOptionsMenu = function(e) {
    var menu = e.menu;
    menu.findItem(LOGIN).setVisible(!loggedIn);
    menu.findItem(LOGOUT).setVisible(loggedIn);
};
win.open();