Applying styles at run time to flex application

Applying styles at run time to your flex application.here there are two things to consider
1.defining ur styles in a .css file.
Here u have to define ur styles in a .css file for various controls or anything according to ur need. include them in the same folder.
example:  style1.css
Application{
backgroundcolor=#ff00ff;
———–
———}  any style definition

2.compile them to generate .swf files.

using adobe flex builder commond prompt compile ur .css file.i.e first copy the .css files to flex builder folder and then at cmd prompt use the command
>mxmlc  style1.css
it generates ur .swf file at the flex builder folder (c:prog file/flex –/style1.swf) now take the generated .swf file to ur flex project folder/bin/ paste it.
now the required .swf files are ready.

3.invoke them at run time using some code.
var currentTheme:String=style1;
private function loadStyle():void
{
var eventDispatcher:IEventDispatcher =
StyleManager.loadStyleDeclarations(currentTheme + “.swf”);
eventDispatcher.addEventListener(StyleEvent.COMPLETE, completeHandler);
}
u can include as many .css file and compile .swf files in to ur project and invoke them at runtime.

for any guidence leave a message

Tree structure with data from database : “php Programming ” is backend

creating Tree structure with data from the database with PHP programming.here there are three things to consider i have given  them as points below follow them
1. define a http servive in ur flex application with properties resultFormat and result, including the url (the data from database or program)

<mx:HTTPService id=”newtree” useProxy=”false”  url=”http://wdoserver/kumar/treeread.php”  resultFormat=”e4x” result=”readMe(event)”/>

2. The PHP program which sends data as an xml it is given below, for progrmming write the similar tags in echo it gives out.
<node>
<node data=”mybook”>
<node data=”mybook”/>
<node data=”mybook”/>
</node>
<node data=”mybook”/>
<node data=”mybook”/>
</node>

3. get that data in ur tree tag with properties dataprovider , showroot ,and labelfield

<mx:Tree x=”10″ y=”10″ width=”330″ height=”523″ labelField=”@data” showRoot=”false” id=”contenttree” change=”treeChanged(event)”>
</mx:Tree>

finally get that result in a method as defined readMe(event) in httpservice

private function readMe(event:ResultEvent):void
{
contenttree.dataProvider=event.result ;
}

thats it ur tree structure from database is ready now play with it.

As few readers requested some code example i am giving it here.Enjoy

Code Example: Download Here

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Garbage colleciton of Flex : with Example

Flash Player provides built-in garbage collection that frees up memory by destroying
objects that are no longer used. To ensure that the garbage collector destroys your
unused objects, remove all references to that object, including the parent’s reference
to the child.

On containers, you can call the removeChild() or removeChildAt() method to remove
references to child controls that are no longer needed. The following example removes
references to button instances from the myVBox control:

example:

<![CDATA[
private function destroyButtons(e:Event):void {
myVBox.removeChild(b1);
myVBox.removeChild(b2);
myVBox.removeChild(b3);
}
]]>

You can clear references to unused variables by setting them to null in your ActionScript; for example:

myDataProvider = null

To ensure that destroyed objects are garbage collected, you must also remove event
listeners on them by using the removeEventListener() met