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Webmaster Forum / Flash / Data Integration / December 2006updating flash from a dynamically changing XML file
Creating a non-interactive status display: I want to have the flash display reflect data in a server-based XML-file. So far this is easy. But I want the display to change everytime the XML file changes-- in order to reflect status changes. I've used an XMLConnector and specified it and the trigger in the first frame. The Flash code catches and shows the XML values initially . But when I edit the XML file, the new values are never picked up by Flash- its almost as though the values are cached. How do I get Flash to regularly be updated from a changing XML file? I've also tried putting the trigger in a loop- but that doesn't work either. Try adding a random value to the load method argument. You might use "my.xml?" + getTimer() or you can use something more savy with the Math.random in combination with getTimer(). What does that do, force the page to regenerate itself, preventing the cached page from loading? > Try adding a random value to the load method argument. You might use "my.xml?" + getTimer() or you can use something more savy with the Math.random in combination with getTimer(). Reply to your email Sorry I missed you are using the XMLConnector component. Have no real experience with the XMLConnector to advise you on caching issues. But with the XML object, the load method file name argument is often appended with a time value to help fool the cache. Perhaps you can find a similar solution. I DID find a solution with setInterval, but there is still a problem of a diffeent sort. When using XMLConnector, it appears that XMLConnector.trigger() is the thing that goes out and gets new data from the server. so: function checkForData():Void { myXML.trigger(); <<handle new values of bound data>> }; var intervalID:Number = setInterval(checkForData, 10000); works very well by executing the trigger every 10000 timeunits. This all works when run in the Flash Player. However, if I embed the thing in a webpage (with either FireFox or IE7 or 6), It stops triggering after the first time. Interestingly if I also run the Flash Player version, then the web version keeps updating, but stops if I kill the Player. So, I'm wondering: whats up with this? Again not up-to-date on XMLConnector but common sense says you cannot handle external data on the code line following the request for it. Rather there needs to be a call back function where this happens. Thanks for your help, but its still not working. The documentation on XMLConnector never mentions anything about needing a callback function. I assumed it was handled, somehow, in the component. Nonetheless, I created one with AddEventListener. I get the event and deal with it. However, just as before, it seems to work fine in the standalone flash player but not when the Flash is in a webbrowser- in the browser it checks the data once and gthen stops. I have tested the setInterval() with a Flash-local function andthe local ones work fine, so it seems pretty clear that the problem is repeated xml reads on a remote server from a webbrowser. Can this be made to work?? I see two events in the docs. Perhaps the one you need is http://livedocs.macromedia.com/flash/8/main/00004315.html OK, so I found th issue- its the browser. What I have been doing works perfectly fine in FireFox. However, IE7 (haven't yet tried other IE versions) seems to do some strange caching or has a security scheme that prevents repeatedly hitting the same .php file to get data. Its either the browser or the flash player for IE Perhaps if you are using AS to work the XMLConnector you can try adding a random variable to the URL myXMLConnector.URL = "http://domain/thefile.php?" + getTimer(); Again I do not use XMLConnector, but this is what is frequently done as one way to overcome caching issues. |
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