var window1 = Titanium.UI.currentWindow;
var test = 1;

var window2 = Titanium.UI.createWindow({
    backgroundColor:'#cccccc',
    title:'Add Note',
    url:'window2.js'
});
window2.test = test;

addButton.addEventListener('click', function()
{    
    window2.open({modal:true});
}

Titanium.App.addEventListener('test', function() {
    Ti.API.info('test: ' + test);
});

saveButton.addEventListener('click', function()
{
    Titanium.UI.currentWindow.test = 2;
    Titanium.App.fireEvent('test');
    addNoteWindow.close();
}

3 Answers

• The problem is your expectation regarding this line:

  window2.test = test;
  

  This assigns the value of test (which is 1) to window2.test.

  It does not assign a reference or a pointer or anything like that, so the original test variable never changes.

  If you want to modify a value in window1 from window2, you can pass the new value through your custom event in window2:

  saveButton.addEventListener('click', function()
  {
      Titanium.UI.currentWindow.test = 2;
      Titanium.App.fireEvent('test', { value:2 });
      addNoteWindow.close();
  }
  

  See custom_events.js in conjunction with app.js for an example.

• Thanks James for the clarification!

  Then I've got Jeff wrong when he speaks about live references : assing-objects-to-other-windows ?

• Thanks for linking to Jeff's post. I think it's correct, but the use of the words 'live references' could potentially give rise to some confusion.

  I think what he meant was that the properties of window2 can still be accessed in window1 and will be updated in real time as they are changed in window2.

  The original test variable never changes in either window, but window2.test does change when your button is clicked.

  So, e.g., you could change your event listener to this:

  Titanium.App.addEventListener('test', function() {
      Ti.API.info('test: ' + window2.test);
  });
  

  which refers to window2.test (changed in window2) instead of test (not changed).