blackcj.com » Flex Builder 3 http://www.blackcj.com/blog Cutting edge development with Adobe Flex, ActionScript and AIR Tue, 10 Aug 2010 02:29:23 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 Error Loading Project – Missing Project Files http://www.blackcj.com/blog/2009/02/22/error-loading-project-missing-project-files/ http://www.blackcj.com/blog/2009/02/22/error-loading-project-missing-project-files/#comments Mon, 23 Feb 2009 01:34:26 +0000 Chris Black http://www.blackcj.com/blog/?p=221 Problem:
An SVN conflict caused the .flexProperites and .asProperties files to be deleted. This caused Flex Builder to prompt “Error Loading Project” with the message “A problem occurred when opening project “Your Project”. Try quitting and restarting the application. If the problem persists, you might be using an unsupported project version, or your project files might be corrupt.

Put simply, a developer checked in their .properties files, which cause an error when doing an SVN update, and was resolved by removing these files from SVN. The next time anybody did an update on the root directory of the project after the files were removed the local copies where removed.

Error Loading Project

Error Loading Project

Solution:
Add the missing files back to your root directory and use SVN ignore on the .flexProperties and .asProperties files. Best practice would be to set up SVN to ignore these project specific files. It is also important to rename and keep a ‘copy’ of your .asProperties file (for example asProperties, without the dot). This allows new team members to download the project, add the dot and have the project correctly set up.

Has anyone else come across this same prompt using Flex Builder 3 and found a different cause / solution? Please post a comment with any other insight on this error.

I would like to give credit to Clayton (file_cabinet) for coming up with the solution to this problem. Thanks Clayton!

Links:
Subclipse
Tortoisesvn

]]> http://www.blackcj.com/blog/2009/02/22/error-loading-project-missing-project-files/feed/ 0 FlexFeed: Twitter RSS Feeds in Flex http://www.blackcj.com/blog/2008/10/04/flexfeed-integrate-twitter-rss-feeds-into-flex/ http://www.blackcj.com/blog/2008/10/04/flexfeed-integrate-twitter-rss-feeds-into-flex/#comments Sat, 04 Oct 2008 20:29:12 +0000 Chris Black http://www.blackcj.com/blog/?p=3 Using Flex and PHP it is possible to integrate Twitter RSS feeds into a Flex web page. Twitters cross domain policy (which is used by Flash) does not allow external resources to access feeds. Using PHP as a medium to the data, Flex can access the feed and display all contents. This technique can be used to access any xml data that Flex may not have access to.

Let's start by creating an HTTPService:

PLAIN TEXT
HTML:
  1. <mx:HTTPService
  2.     id="rssParse"
  3.     url="http://twitter.com/statuses/user_timeline/16584421.rss"
  4.     result="processResult(event)"
  5.     resultFormat="e4x" />

Next we will create the function to process the results:

PLAIN TEXT
Actionscript:
  1. import mx.collections.ArrayCollection;
  2. import mx.rpc.events.ResultEvent;
  3.  
  4. [Bindable]
  5. private var _rssResults:ArrayCollection;
  6.  
  7. // Define and use atom namespace.
  8. private namespace atom = "http://www.w3.org/2005/Atom";
  9. use namespace atom;
  10.  
  11. private function processResult(event:ResultEvent):void
  12. {
  13. var xmlList:XMLList = event.result.channel.item as XMLList;
  14. for each(var item:XML in xmlList){
  15. var myDate:String = item.pubDate;
  16. myDate = myDate.slice(0,22);
  17. _rssResults.addItem({title: item.title, date: myDate});
  18. }
  19. }
  20.  
  21. private function init():void
  22. {
  23. _rssResults = new ArrayCollection();
  24. rssParse.send();
  25. }

Now lets add the mxml to display the content:

PLAIN TEXT
HTML:
  1. <mx:VBox width="400" height="600" horizontalAlign="center"> 
  2.     <mx:Label styleName="subTitleText" text="Twitter Feed:" fontWeight="bold" fontSize="16"/>
  3.     <mx:VBox height="500" width="400" verticalScrollPolicy="auto" horizontalScrollPolicy="off" horizontalAlign="center">
  4.         <mx:Repeater id="twitter" dataProvider="{_rssResults}">
  5.             <mx:Text textAlign="center" width="300" text="{twitter.currentItem.date}"/>
  6.             <mx:Text textAlign="center" width="300" text="{twitter.currentItem.title}"/>
  7.         </mx:Repeater>     
  8.     </mx:VBox> 
  9. </mx:VBox>

After testing the application locally everything works great! But wait... what about the PHP code? Well first export a release build of the application and upload it to a web server for testing.

Here is the error that you should recieve:
[RPC Fault faultString="Security error accessing url" faultCode="Channel.Security.Error" faultDetail="Destination: DefaultHTTP"]

To get around this let's create a php file that collects the twitter data:

PLAIN TEXT
PHP:
  1. $twitter_feed = 'http://twitter.com/statuses/user_timeline/16584421.rss';
  2. $rawfeed = @file_get_contents($twitter_feed);
  3. print $rawfeed;

Now we need to update our HTTPService request to pull from the new php file:

PLAIN TEXT
HTML:
  1. <mx:HTTPService
  2.     id="rssParse"
  3.     url="php/twitter.php"
  4.     result="processResult(event)"
  5.     resultFormat="e4x" />

Now everything works great!

Check out this link to view a functional example:
http://www.blackcj.com/FlexFeed/index.html

And the source files:
http://www.blackcj.com/FlexFeed/srcview/index.html

Please leave a comment if you have any questions, comments, or suggestions. Thanks!

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