TextField - Focus on Window Open Event

gistfile1.txt

var win = Ti.UI.createWindow({layout: 'vertical', backgroundColor:'#fff'});

var textField = Ti.UI.createTextField({
	height: Ti.UI.SIZE,
	width: '90%',
	font: {fontSize: 20},
	softKeyboardOnFocus: Ti.UI.Android.SOFT_KEYBOARD_SHOW_ON_FOCUS
});
win.add(textField);

win.addEventListener('open', function(e){
	textField.focus();
});
win.open();