Ios app with Adobe Flash performances issue?

Question

Hi.
I buy ios enroll program today. I tried to addchild few bitmap on stage and rotate them.
Awful. My computer can hold about 300 rotating bitmaps without lag.
IPod Touch 4: less than 10 bitmaps. 10 Bitmaps are moving = 1 fps?!
Are you kidding me Adobe? What is that thousand and thousand movieclip on that Ipad http://www.youtube.com/watch?feature=player_embedded&v=ZPHATCbnHE0
My Main class is basic:
package com.ecrevous {
          import flash.display.MovieClip;
          import flash.display.Sprite;
          import flash.events.Event;
          import flash.display.Bitmap;
          public class Main extends MovieClip {
                    public var bg:Sprite;
                    public function Main() {
                              bg=new Sprite();
                              this.addChild(bg);
                              for(var i:uint=0;i<10;i++){
                                        var p:Bitmap = new Bitmap(new Cochon());
                                        p.x = stage.stageWidth*Math.random();
                                        p.y = stage.stageHeight*Math.random();
                                        bg.addChild(p);
                              addEventListener(Event.ENTER_FRAME, onEnter);
                    public function onEnter(e:Event):void{
                                        trace('number Cochons: '+bg.numChildren);
                              for(var i:uint=0;i<bg.numChildren;i++){
                                        bg.getChildAt(i).rotation+=10;
And there is my XML
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<application xmlns="http://ns.adobe.com/air/application/3.2">
  <id>com.ecrevous.kingkidnap</id>
  <versionNumber>1.0</versionNumber>
  <filename>King Kidnap</filename>
  <description/>
  <!-- To localize the description, use the following format for the description element.<description><text xml:lang="en">English App description goes here</text><text xml:lang="fr">French App description goes here</text><text xml:lang="ja">Japanese App description goes here</text></description>-->
  <name>King Kidnap</name>
  <!-- To localize the name, use the following format for the name element.<name><text xml:lang="en">English App name goes here</text><text xml:lang="fr">French App name goes here</text><text xml:lang="ja">Japanese App name goes here</text></name>-->
  <copyright/>
  <initialWindow>
    <content>iJump.swf</content>
    <systemChrome>standard</systemChrome>
    <transparent>false</transparent>
    <visible>true</visible>
    <fullScreen>true</fullScreen>
    <renderMode>direct</renderMode>
    <autoOrients>false</autoOrients></initialWindow>
  <icon/>
  <customUpdateUI>false</customUpdateUI>
  <allowBrowserInvocation>false</allowBrowserInvocation>
  <iPhone>
    <InfoAdditions>
      <![CDATA[<key>UIDeviceFamily</key><array><string>1</string></array>]]>
    </InfoAdditions>
    <requestedDisplayResolution>high</requestedDisplayResolution>
  </iPhone>
</application>
As you can see, I'm using direct renderMode.
What I am wrong?

Answer 1

Welcome to the optimized code !
You need create optimized code
the iPod and iPhone are not a Computer. Rotations are very expensive process for the CPU, you need to use bitmap caching matrix
http://help.adobe.com/en_US/as3/mobile/WS4bebcd66a74275c36c11f3d612431904db9-7ffc.html
http://www.adobe.com/devnet/flash/articles/optimize_content_ios.html