Beginner help with "next" arrow button

Question

Hi,
I have a simple  video gallery set up connected to an xml file to load my assets (video  path, title, description).  Rather than using small thumbnails to change  the videos and corresponding info, I have two arrow buttons that should  change the videos in order back and forth.  (so 0 > 1 > 2 > 0  etc, and backwards with the left arrow)
My assets are  connected and I know this is simple and I have learned it but I am  having trouble with my assets changing to my button click events.  I was  thinking of using if statements (which work on the first 2 assets but  then fail after that).
protected function button1_clickHandler(event:MouseEvent):void
                if (myVideo.source == "assets/media/" + myData[0].path;
                myLabel1.text == myData[0].desc;
                titleLabel1.text == myData[0].title;)
                myVideo.source = "assets/media/" + myData[1].path;
                myLabel1.text = myData[1].desc;
                titleLabel1.text = myData[1].title;
in my head i was thinking of then using "else if" myData[1] then it changes to [2] like this:
else if (myVideo.source = "assets/media/" + myData[1].path;
                myLabel1.text = myData[1].desc;
                titleLabel1.text = myData[1].title;)
            { myVideo.source = "assets/media/" + myData[2].path;
                myLabel1.text = myData[2].desc;
                titleLabel1.text = myData[2].title; }
but i seem to be doing something wrong.
can anyone help me with the code to loop them all together?
thanks!

Answer 1

Yes, its ArrayCollection. It holds data. In your case, collection of videos.
    <mx:ArrayCollection id="myData">
        <mx:source>
            <mx:Array>
                <mx:Object source="Video1.mp4" title="Hello Friend" />
                <mx:Object source="Video2.mp4" title="Hw ru?" />
                <mx:Object source="Video3.mp4" title="Hv a nice day!" />
            </mx:Array>
        </mx:source>
    </mx:ArrayCollection>
Also you can use XML. Lets your XML data is like -
            private var myDataXML:XML =
                                    <data>
                                        <mydata>
                                            <source>video1.mp4/</source>
                                            <title>Hello Friend</title>
                                        </mydata>
                                        <mydata>
                                            <source>video2.mp4/</source>
                                            <title>How r u!</title>
                                        </mydata>
                                        <mydata>
                                            <source>video3.mp4/</source>
                                            <title>Have a nice day!!</title>
                                        </mydata>
                                    </data>;
Note: You can populate this XML  data from external XML file too.
Now, on button click,
            private function click_NextHandler(e:Event):void
                currentIndex++;
                if(currentIndex == myDataXML.mydata.length())
                    currentIndex = 0;
            myVideo.source       = "assets/media/" + myDataXML.mydata[currentIndex].source;
           titleLabel1.text     = myDataXML.mydata[currentIndex].title;            }
Hope it helps.
Thanks.
abhinav