Problems using transitions tweener in image gallery

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  Hello

  I'm trying to set up a simple Gallery of images with alpha transition using as3.  But a problem with that. After each transition the image alpha, the stage becomes empty. The code I used for image Gallery is the sequel. Can someone help me. I try this for a week. but I still have a hope to make this work. So please help me.

  import flash.display.Loader;
  import flash.display. *;
  import of gs. TweenLite;

  const TIMER_DELAY = 2000;

  var totImages:Number;
  var: index number = 0;

  var imgArr:Array = new Array();

  var currentContainer:MovieClip = holder0;
  currentContainer.alpha = 0;

  
  var transTimer:Timer = new Timer (TIMER_DELAY);
  transTimer.addEventListener (TimerEvent.TIMER, startTransition);

  var imgLoader:Loader = new Loader();

  var myXML:XML = new XML();
  var XML_URL:String = "images.xml."
  var myXMLURL:URLRequest = new URLRequest (XML_URL);
  var myLoader:URLLoader = new URLLoader (myXMLURL);
  myLoader.addEventListener ("complete", xmlLoaded);

  function xmlLoaded(event:Event):void {}
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  processXML (myXML);
  }
  function processXML (xml) {}
  totImages = xml.children () .length ();
  for (var i = 0; i < totImages; i ++) {}
  var tempVar = xml... Item [i]... image;
  imgArr.push (tempVar);
  }
  transTimer.start ();
  
  currentContainer = holder0;
  loadImage();
  }
  function loadImage() {}
  var url = imgArr [index];
  ImgLoader.contentLoaderInfo.addEventListener (ProgressEvent.PROGRESS, onProgressStatus);
  imgLoader.contentLoaderInfo.addEventListener (Event.COMPLETE, fadeInImg);
  var fileRequest:URLRequest = new URLRequest (url);
  imgLoader.load (fileRequest);
  currentContainer.addChild (imgLoader);
  }
  function fadeInImg(e:Event) {}
  TweenLite.to(currentContainer,3,{alpha:1,delay:2,onComplete:switchClip});)
  }
  function switchClip() {}
  if(index < totImages) {}
  index ++;
  } else {}
  index = 0;
  }
  if(currentContainer == holder0) {}
  currentContainer = holder1;
  } else {}
  currentContainer = holder0;
  }
  currentContainer.alpha = 0;
  MovieClip (this.root) .swapChildren (holder0, holder1);
  loadImage();
  }

  Thank you and best regards,

  Sreelash

  Here's some code that should work for you. Note that this is a version stripped of the code class, so all by removing class related Articles, some bugs can be introduced. When the class code worked perfectly.

  
  import flash.display.DisplayObject;
  import flash.display.Loader;
  import flash.events.Event;
  import flash.events.TimerEvent;
  import flash.net.*;
  import flash.utils.Timer;
  import gs.TweenLite;
  
  var xmlURL:String = "http://www.creative-showcase.co.uk/BirdStudiosOld/Videos/test/images.xml";
  // array of loaded images
  // you don't have to reload them every time
  // unless you want to free memory
  // which will involve additional coding
  // and more complex logic
  var loadedImages:Array = [];
  // array of images urls
  var imageURLs:Array = [];
  // image loader
  var imageLoader:Loader;
  // previously displayed image
  var prevImage:DisplayObject;
  // current image
  var currentImage:DisplayObject;
  // slide show timer
  var showTimer:Timer;
  // timer duration
  var timerDuration:int = 3000;
  // tween duration
  var tweenDuration:int = 2;
  // index of the current slide
  var currentIndex:int = 0;
  
  var myXMLURL:URLRequest = new URLRequest(xmlURL);
  var xmlLoader:URLLoader = new URLLoader(myXMLURL);
  xmlLoader.addEventListener(Event.COMPLETE, xmlLoaded);
  xmlLoader.load(myXMLURL);
  
  function xmlLoaded(e:Event):void
  {
       // allow for GC
       e.target.removeEventListener(Event.COMPLETE, xmlLoaded);
       processXML(XML(e.target.data));
  }
  
  function processXML(xml:XML):void {
       var len:int = xml.children().length();
       // declare variable once
       var tempVar:String;
       for (var i:int = 0; i < len; i++) {
            tempVar = "http://www.creative-showcase.co.uk/BirdStudiosOld/Videos/test/" + xml..item[i]..image;
            imageURLs.push(tempVar);
       }
       preload();
  }
  
  function preload():void
  {
       // preload the rest of the images
       // in this case the logic is that
       // because slide show is automatic
       // it may make sense to have all of them
       // in memory - they are going to be there
       // eventually anyway
       var len:int = imageURLs.length;
       for (var i:int = 0; i < len; i++) {
            imageLoader = new Loader();
            imageLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, onPreloadComplete);
            // hold loader in the array - it will be reused
            loadedImages.push(imageLoader);
            imageLoader.load(new URLRequest(imageURLs[i]));
       }
  }
  
  function onPreloadComplete(e:Event):void
  {
       // prepare for GC
       e.target.removeEventListener(Event.COMPLETE, onPreloadComplete);
       // if timer is not instantiated - show is not started
       // AND first two were preloaded - meaning they have content
       if (!showTimer && loadedImages[0].content &&   loadedImages[1].content ) startShow();
  }
  
  function startShow():void
  {
       // place first image on display list
       currentImage = loadedImages[0];
       currentImage.alpha = 0;
       addChild(currentImage);
       TweenLite.to(currentImage, 1, { alpha: 1 } );
       // start show timer
       showTimer = new Timer(timerDuration);
       showTimer.addEventListener(TimerEvent.TIMER, slideTransition);
       showTimer.start();
  }
  
  function slideTransition(e:TimerEvent):void
  {
       // in case sequence is important - don't change
       // current index yet but check against
       // separate variable
       var nextImage:int = currentIndex < loadedImages.length - 1 ? currentIndex + 1 : 0;
       // check if image was loaded
       // if it is not loaded - will wait until next timer event round
       if (loadedImages[nextImage].content) {
            // now we can change current index
            currentIndex = nextImage;
            // place it behind current image
            addChildAt(loadedImages[currentIndex], getChildIndex(currentImage));
            // swap them
            prevImage = currentImage;
            currentImage = loadedImages[currentIndex];
            // show transition
            showCurrent();
       }
  }
  
  function showCurrent():void
  {
       // make sure they have proper alphas
       prevImage.alpha = 1;
       currentImage.alpha = 0;
       TweenLite.to(prevImage, tweenDuration, { alpha: 0 } );
       TweenLite.to(currentImage, tweenDuration, { alpha: 1, onComplete: removePrevious } );
  }
  
  function removePrevious():void {
       if (this.contains(prevImage)) removeChild(prevImage);
  }
  

• W/scrolling CF image gallery question

  It is probably the less of a concern for anyone at this stage, but instead of documentation and best practices, I thought I'd ask anyway.  Maybe someone from Adobe will be able to answer.  I think I have eaten every tutorial available on the internet and have not come across this yet.

  As far as I can tell that the variables are not readily available at FC (although MXML might solve that), so I don't know how to build it.

  I am designing a photo gallery, in which images can be the object of a scroll, fainted in out, or something by clicking a button NEXT and PREVIOUS.

  The problem is to know what image is visible at any given time.

  I was able to do this by creating a separate State for each image, then "onclick" - switch to the next (or previous) State.  It does not work perfectly, auto-generated code to make the transition is a little off and then when I go to manually tweak, I just make it worse.

  I guess: is the best way to do it or there at - it a simpler way?

  OR I try to use CF to inappropriately?  Initially, I saw FC as an alternative to learning Flash (I tried for months - seriously), but I realize that the main purpose of the CF appears to be like a high design tool and Flash Builder is intended to inject functionality and add design FC in the workflow.

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  Thank you for reading and suggestions that you may have;

  
  The draft of the site is www.sunnysideosc.ca (select Gallery > pictures)

  Interpolations of freezing is usually caused by the instance of Tween getting the garbage collector. You must have the persistence of a reference to the Tween to prevent it of to GC would be. In other words, if you do this:

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  Hi all

  No response from Apex listener Forum... moved here...

  Headset - 2.0.2.133.14.47 apex

  Apex - 4.2.2.00.11

  When you run the image gallery application according to the tutorial, page just show a blank screen with no image upload button.

  Use 22.0 Firefox and Chrome 28.0.1500.72.

  Firebug does not display a script error.

  Has recreated the tutorial on apex.oracle.com with the same result as above.

  http://Apex.Oracle.com/pls/Apex/f?p=4550:1:F4550_P1_COMPANY:HANAMIKE

  Workspace: HANAMIKE

  User name: [email protected]

  Password: yesla

  
  

  Using the user name = resteasy_admin password = resteasy_admin on apex.oracle.com.

  Had changed the JS tutorial below:

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  Another strange problem was when to try the RESTFUL according to the tutorial service when you click on the button 'TEST', has detected the error 404

  Problem on behalf of space of overtime in the URL as below:

  http://Apex.Oracle.com/pls/Apex/hanamike/hanamike/gallery/images/

  Had to manually change:
  

  http://Apex.Oracle.com/pls/Apex/hanamike/gallery/images/

  
  

  Note that the version of the listener on apex.oracle.com is:

  APEX_LISTENER_VERSION

  2.0.3.165.10.09

  
  

  Thanks in advance.

  Zack
  

  
  

  Post edited by: Zack.L

  Hi Zack,

  Please provide the credentials to connect to your workspace.  I took a quick glance to your RESTful Service and applications associated and noticed that he was missing something - the "Upload Image" button! It seems therefore that the section "Create the gallery app" is not a step to create an HTML region, with the model "Button region without title" of the region and with its region defined as source:

  Download Image

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  Kind regards

  Hilary

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