Solved

Flash/Flex change xml data according to time

Posted on 2010-11-22
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494 Views
Last Modified: 2012-05-10
Hi All,

Busy with a project, but need help to compile a flash/flex component to change data got from XML according to time.

Here is my XML sample:
<?xml version="1.0"?>
<catalog>
   <dj id="00h00>
      <onair>Gambardella, Matthew</onair>
      <showname>Grave Shift</showname>
      <image>http://www.domain.com/app/images/matthew.png</image>
      <blog>http://www.domain.com/blog/mattheew</blog>
      <email>matthew@domain.com</email>
   </dj>
   <dj id="03h00>
      <onair>Delport, Mardi</onair>
      <showname>After Night</showname>
      <image>http://www.domain.com/app/images/mardi.png</image>
      <blog>http://www.domain.com/blog/mardi</blog>
      <email>mardi@domain.com</email>
   </dj>
</catalog>

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What i need is a way to display the details according to different times (radio station). When on certain time, the component change the data gotten from XML document.

Please help :)
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Question by:VeyronSA
  • 3
  • 2
5 Comments
 
LVL 11

Expert Comment

by:petiex
ID: 34190180
You can build a string like the ones you have in the dj id value from the current date object, and then, since alphabetical order and time order are the same in this case, the first dj time slot that is in the past will be the active one:
private function chooseDJ(x:XML):XML{
            var date:Date = new Date();
            var nowH:int = date.getHours();
            var nowM:int = date.getMinutes();
            var activeDj:XML = null;
            var nowStr:String = (nowH > 9?"":"0")+nowH+"h"+(nowM > 9?"":"0")+nowM;
            for each (var dj:XML in x.dj){
                if(dj.id < nowStr){
                    activeDj = dj;
                    break;
                }
            }
            return activeDj;
        }

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0
 
LVL 11

Expert Comment

by:petiex
ID: 34190247
Then, of course, if the current time is earlier than the earliest time slot, you cycle through the dj xmls to get the latest timeslot...


private function chooseDJ(x:XML):XML{
            var date:Date = new Date();
            var nowH:int = date.getHours();
            var nowM:int = date.getMinutes();
            var activeDj:XML = null;
            var latestSlot:XML = null;
            var nowStr:String = (nowH > 9?"":"0")+nowH+"h"+(nowM > 9?"":"0")+nowM;
            for each (var dj:XML in x.dj){
                if(!latestSlot || latestSlot.id < dj.id){
                    latestSlot = dj;
                }
                if(dj.id < nowStr){
                    activeDj = dj;
                    break;
                }
            }
            if(activeDj == null){
               activeDj = latestSlot;
             }
            return activeDj;
        }

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0
 

Author Comment

by:VeyronSA
ID: 34233868
Ok, lol. Now i dont know how to integrate :D. A big beginner and a Newbie with this, can you show me please.
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LVL 11

Accepted Solution

by:
petiex earned 500 total points
ID: 34234297
I'll assume this is an extension of your other question (http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/Flex/Q_26581471.html) and plug the new code into that. I'm glad I tested this again, because the code I posted above doesn't actually work :-O

The attached code holds up to testing -- and the timer makes it easy to test out different values in the xml without redeploying.
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" percentHeight="100" percentWidth="100"
                creationComplete="setTimer()"
        >
    <mx:Script><![CDATA[

        private var myXML:XML;
        //You will want to make this much larger. I have it at 20 seconds
        //for testing.
        private const intervalInMilliseconds:Number = 20000;

        private function setTimer():void {
            loadXML(null);
            var timer:Timer = new Timer(intervalInMilliseconds, 0);
            timer.addEventListener(TimerEvent.TIMER, loadXML);
            timer.start();
        }

        private function loadXML(event:Event):void {
            //add new date querystring to avoid browser caching
            var loader:URLLoader = new URLLoader(new URLRequest("http://www.domain.com/test.xml?v=" + (new Date()).getTime()));
            loader.addEventListener(Event.COMPLETE, loadComplete);
        }

        private function loadComplete(event:Event):void {
            myXML = chooseDJ(new XML(event.target.data));
            myImage.source = myXML.image;
            myImage.addEventListener(MouseEvent.CLICK, openLink);
        }

        private function openLink(event:MouseEvent):void {
            navigateToURL(new URLRequest(myXML.blog))
        }

        private function chooseDJ(x:XML):XML {
            var date:Date = new Date();
            var nowH:int = date.getHours();
            var nowM:int = date.getMinutes();
            var activeDj:XML = null;
            var latestSlot:XML = null;
            var nowStr:String = (nowH > 9 ? "" : "0") + nowH + "h" + (nowM > 9 ? "" : "0") + nowM;

            for each (var dj:XML in x.dj) {
                if (!latestSlot || latestSlot.@id < dj.@id) {
                    latestSlot = dj;
                }
                if (dj.@id < nowStr) {
                    if (!activeDj || activeDj.@id < dj.@id) {
                        activeDj = dj;
                    }
                }
            }
            if (activeDj == null) {
                activeDj = latestSlot;
            }

            return activeDj;
        }
        ]]></mx:Script>
    <mx:Image id="myImage" useHandCursor="true" buttonMode="true"/>

</mx:Application>

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0
 

Author Closing Comment

by:VeyronSA
ID: 34234551
Genius!!!! Give this man a Medal!

Thanks
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