<?xml version="1.0" encoding="utf-8"?>
<mx:Application  xmlns:mx="http://www.adobe.com/2006/mxml" width="100%" height="100%"
     viewSourceURL="srcview/index.html" backgroundColor="0x000000" layout="absolute">
 
    <mx:Script>
        <![CDATA[
            import org.alivepdf.pages.Page;
            import org.alivepdf.pdf.PDF;
            import org.alivepdf.layout.Orientation;
            import org.alivepdf.layout.Size;
            import org.alivepdf.layout.Unit;
            import org.alivepdf.display.Display;
     &nbs ......

as:
var app:Object;
function setApp(ap:Object):void{
this.app=ap;
}
btn.addEventListener(MouseEvent.CLICK,onClick);
function onClick(event:MouseEvent):void{ 
app.fun(btn.label);
} 
flex:
private function onSwfLoaded(event:Event):void
{
  myloader.addEventListener(Event.COMPLETE, loaderHandler);
}
private function loaderHandler(event:Event):void
{
  Object(myloader.content).setApp(this);
}
public function fun(str:String):void
{
  trace(str);
}
......

1、当创建一个数组的时候避免用new操作符,用 var a:Array = [];而不用var a:Array = new Array();
2、快速的复制一个数组：
var copy : Array = sourceArray.concat ();
3、设置一个数组的值是非常忙的：
employees.push ( employee ); employees[2] = employee;
4、从一个数组中取得值的速度是设置一个数组值的两倍快：
var employee : Employee = employees[2];
5、当不需要一个类的实例的时候尽量用静态的属性或方法：
   package
   {
      public final class StringUtils
      {
           public static function trim(s:String):String
             {
                 var trimmed:String; // implementation...
                return trimmed;
   &n ......

<mx:DataGrid id="dg" click="select()" dataProvider= "{modelLocator.resultList}" borderStyle="none"
verticalGridLines="false" horizontalGridLines="false" verticalScrollPolicy="off" rowCount="10"
fontSize="16" fontStyle="normal" fontThickness="0" width="100%" height="100%">
<mx:columns>
<mx:DataGridColumn dataField="programName " headerText="节目名称" >
<mx:itemRenderer>
<mx:Component>
<mx:HBox width="100%" height="100%" horizontalAlign="left" verticalAlign="middle" horizontalScrollPolicy="off" verticalScrollPolicy="off">
<mx:Script>
<![CDATA[
import mx.controls.Alert;
override public function set data (value:Object):void
{
if(value != null)
{
super.data = value;
programXYZ.htmlText = data.programName;
//Alert.show(this.programXYZ.text);
}
}
]]>
</mx:Script>
<mx:Text id="programXYZ" />
</mx:HBox>
</mx:Component>
</mx:itemRenderer>
</mx:DataGridColumn>
......

Flex中如何通过strokeWidth, strokeColor和shadowColor样式，创建一个自定义风格的HRule或VRule
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
    layout="vertical"
    verticalAlign="middle"
    backgroundColor="white">
 <mx:ApplicationControlBar dock="true">
  <mx:Form>
   <mx:FormItem label="stokeWidth:">
    <mx:HSlider id="strokeWidthSlider"
       minimum="0"
       maximum="20"
       value="2"
       liveDragging="true"
       snapInterval="1"
       tickInterval="1"
       dataTipPrecision="0"/>
   </mx:FormItem> ......

在Flex里，一般的弹出窗口（除了Alert以外）都可以用TitleWindow组件完成，主窗口和TitleWindow的数据传输可以用以下方法
假设TitleWindow的实例文件为titleWin.mxml，则要在Application中用PopUpManager创建一个titleWin的引用
private var popWin:titleWin = titleWin(PopUpManager.createPopUp(this,titleWin,true));
如果要将Application的一个组件的值传给titleWin，如Application的id="userName"的TextInput的值传给titleWin,必须先在titleWin.mxml里声明一个TextInput的组件：
public var userNameInPop:TextInput;
然后在Application里：
popWin.userNameInPop=userName;
这样就相当于把Application的userName的TextInput组件传给了titleWin,可以在titleWin.mxml里绑定这个值然后在文本框里显示出来:
[Bindable]
public var userNameInPop:TextInput;
<mx:TextInput x="110" y="39" id="popUserName" text="{userNameInPop.text}"/>
而要把titleWin的值传给Application则只需在titleWin.mxml里把TextInput的值赋给userNameInPop的text即可：
userNameInPop.text=popUserName.text;
......