Suppose we have a button, and on click of that button we need to show the option dialog.

//Define the option box
var optionBox = Titanium.UI.createOptionDialog({
   title         : 'Choose  Language Type',
   options    : ['C#','VB', 'Cancel'],   //Different options
   cancel     : 2   //Index of the option that will cancel the dialog box
});
 
optionBox.addEventListener('click', function(e){
 
   //Holds the selected button index info
   var optionIndex = e.index;      // 0 => C#, 1 => VB and 2 => Cancel
 
   //Using selected option index do the required job
});
 
//Define button
var choseBtn = Ti.UI.createButton({
   title   : 'Chose Language'
});
 
//Onclick of the button show the dialog
choseBtn.addEventListener('click', function(){
   //Show the option dialog
   optionBox.show();
});