Underline function

app.js

var win = Ti.UI.createWindow();

win.open();

function label(args){
	var view = Ti.UI.createView({
			width:'size', 
			height:'size',
			layout:'vertical'
	});
	var label = Ti.UI.createLabel({
		text:args.text,
		color:args.color,
		width:'size',
		bottom:1
	});
	view.add(label);
	
	if(args.underline){
		label.addEventListener('postlayout', function(){
			if(!view.children[1]){
				
				var underline = Ti.UI.createView({
					backgroundColor:args.color,
					height:1,
					width:label.size.width,
					bottom:0
				});
				view.add(underline);
			}
		});
	}
	
	return view;
}

win.add(label({text:'This is my test label', color:'white', underline:true}));