[TIMOB-8303] iOS: Text Field/Area needs hasText method

var win = Ti.UI.createWindow({
	backgroundColor : 'white',
	exitOnClose : true,
	fullscreen : false,
	layout : 'vertical',
	title : 'hasText Demo'
});
 
var textField = Ti.UI.createTextField({
    color: '#336699',
    backgroundColor:'#eee',
    top: 10, left: 10,
    width: 250, height: 60,
    borderStyle: Ti.UI.INPUT_BORDERSTYLE_ROUNDED
});
win.add(textField);
 
var textArea = Ti.UI.createTextArea({
    borderStyle: Ti.UI.INPUT_BORDERSTYLE_ROUNDED,
    backgroundColor:'#eee',
    color: '#336699',
    top: 10, left: 10,
    width: 250, height: 200
});
win.add(textArea);
 
 
win.open();
 
textField.addEventListener('change', function(e){
    Ti.API.info('hasText? ' + e.source.hasText());
});
 
textArea.addEventListener('change', function(e){
    Ti.API.info('hasText? ' + e.source.hasText());
});