Countdown Timer in Ios

app.js

var win1 = Titanium.UI.createWindow({  
    backgroundColor:'black'
});

var duration = 60000 * 5; // 5 minutes

var picker = Ti.UI.createPicker({
    type:Ti.UI.PICKER_TYPE_COUNT_DOWN_TIMER,
    countDownDuration:duration
});

picker.selectionIndicator = true;

win1.add(picker);

picker.addEventListener('change',function(e)
{
    Ti.API.info('countDownDuration = ' + picker.countDownDuration);
    Ti.API.info('value = ' + picker.value);
});

win1.open({modal:false});

win1.open();