AS3常用代碼

1. 拉選框

package

{

import flash.display.Sprite;

import flash.events.MouseEvent;

import flash.geom.Point;

public class AreaRect extends Sprite

{

private var rect:Sprite;

private var point:Point;

public function AreaRect()

{

rect = new Sprite();

stage.addChild(rect);

stage.addEventListener(MouseEvent.MOUSE_DOWN,onMouseDown);

stage.addEventListener(MouseEvent.MOUSE_UP,onMouseUp);

}

private function onMouseDown(evt:MouseEvent):void

{

point = new Point(mouseX,mouseY);

stage.addEventListener(MouseEvent.MOUSE_MOVE,onMouseMove);

}

private function onMouseMove(evt:MouseEvent):void

{

rect.graphics.clear();

rect.graphics.lineStyle(2,0x0A7CCA,1);

rect.graphics.drawRect(point.x,point.y,mouseX-point.x,mouseY-point.y);

}

private function onMouseUp(evt:MouseEvent):void

{

stage.removeEventListener(MouseEvent.MOUSE_MOVE,onMouseMove);

}

2. FMS文本聊天

<?xml version="1.0" encoding="utf-8"?>

<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"

xmlns:s="library://ns.adobe.com/flex/spark"

xmlns:mx="library://ns.adobe.com/flex/mx" initialize="init()">

<s:layout>

<s:BasicLayout/>

</s:layout>

<fx:Script>

<![CDATA[

private var nc:NetConnection;

private var so:SharedObject;

private function init():void

{

nc = new NetConnection();

nc.connect("rtmp://localhost/virtualShow");

nc.client = this;

nc.addEventListener(NetStatusEvent.NET_STATUS,onNetStatus);

}

private function onNetStatus(evt:NetStatusEvent):void

{

trace(evt.info.code);

if(evt.info.code=="NetConnection.Connect.Success")

{

so = SharedObject.getRemote("myMsg",nc.uri,false);

so.addEventListener(SyncEvent.SYNC,onSYNC);

so.connect(nc);

}

private function onSYNC(evt:SyncEvent):void

{

for(var i:uint=0;i<evt.changeList.length;i++)

{

switch(evt.changeList[i].code)

{

case "change":

updateList();

break;

case "clear":

break;

case "success":

break;

default:

break;

}

private function updateList():void

{

msgList.text += so.data.msg+"\n";

}

protected function onClick(event:MouseEvent):void

{

so.setProperty("msg",txtInput.text);

msgList.text+=txtInput.text+"\n";

txtInput.text="";

}

public function onBWDone():void{}

]]>

</fx:Script>

<fx:Declarations>

</fx:Declarations>

<s:TextArea id="msgList" x="173" y="37" width="300" height="150"/>

<s:TextInput id="txtInput" x="173" y="218" width="209"/>

<s:Button id="btnPost" x="399" y="219" label="按鈕" click="onClick(event)" />

</s:Application>

3. FMS視訊聊天

<?xml version="1.0" encoding="utf-8"?>

<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"

xmlns:s="library://ns.adobe.com/flex/spark"

xmlns:mx="library://ns.adobe.com/flex/mx" initialize="init()">

<s:layout>

<s:BasicLayout/>

</s:layout>

<fx:Declarations>

</fx:Declarations>

<fx:Script>

<![CDATA[

import mx.core.UIComponent;

private var nc:NetConnection;

private var mic:Microphone;

private var cam:Camera;

private function init():void

{

//加載自己的攝像頭

mic = Microphone.getMicrophone();

cam = Camera.getCamera();

var video:Video = new Video();

video.attachCamera(cam);

var uiBox:UIComponent = new UIComponent();

uiBox.addChild(video);

this.addElement(uiBox);

nc = new NetConnection();

nc.addEventListener(NetStatusEvent.NET_STATUS,onNetStatus);

nc.connect("rtmp://192.168.1.16/virtualShow");

nc.client = this;

}

private function onNetStatus(evt:NetStatusEvent):void

{

trace(evt.info.code);

if(evt.info.code=="NetConnection.Connect.Success")

{

var ns:NetStream = new NetStream(nc);

ns.addEventListener(NetStatusEvent.NET_STATUS,onNetStatus);

ns.attachAudio(mic);

ns.attachCamera(cam);

ns.client = this;

ns.publish("hxw","live");

}

public function onBWDone():void

{

}

]]>

</fx:Script>

</s:Application>

<?xml version="1.0" encoding="utf-8"?>

<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"

xmlns:s="library://ns.adobe.com/flex/spark"

xmlns:mx="library://ns.adobe.com/flex/mx" initialize="init()">

<s:layout>

<s:BasicLayout/>

</s:layout>

<fx:Declarations>

</fx:Declarations>

<fx:Script>

<![CDATA[

import mx.core.UIComponent;

private var nc:NetConnection;

private function init():void

{

nc = new NetConnection();

nc.connect("rtmp://192.168.1.16/virtualShow");

nc.addEventListener(NetStatusEvent.NET_STATUS,onNetStatus);

nc.client = this;

}

private function onNetStatus(evt:NetStatusEvent):void

{

var ns:NetStream = new NetStream(nc);

ns.play("hxw");

var video:Video = new Video();

video.attachNetStream(ns);

var uiBox:UIComponent = new UIComponent();

uiBox.addChild(video);

this.addElement(uiBox);

}

public function onBWDone():void

{

}

]]>

</fx:Script>

</s:Application>

4. PopupManager父窗體傳值給子窗體

private function btnAddFrontImg_Click():void

{

//var titleWindow:TitleWindow = PopUpManager.createPopUp(this, UploadImage, true) as TitleWindow;

var titleWindow:UploadImage = PopUpManager.createPopUp(this, UploadImage, true) as UploadImage;

titleWindow.uploadType = "一個值";

PopUpManager.centerPopUp(titleWindow);

}

public var uploadType:String="hxw";

private function onClick(event:MouseEvent):void

{

Alert.show(uploadType);

}

5. PopupManager子窗體傳值給父窗體

private function btnAddFrontImg_Click():void

{

//var titleWindow:TitleWindow = PopUpManager.createPopUp(this, UploadImage, true) as TitleWindow;

var titleWindow:UploadImage = PopUpManager.createPopUp(this, UploadImage, true) as UploadImage;

titleWindow.addEventListener("tw_click",update);

PopUpManager.centerPopUp(titleWindow);

}

private function update(event:Event):void

{

Alert.show("測試");

}

private function onClick(event:MouseEvent):void

{

dispatchEvent(new Event("tw_click"));

}

6. Bitmap的翻轉函數

public static function upanddown(bt:BitmapData):BitmapData

{

var bmd:BitmapData = new BitmapData(bt.width, bt.height, true, 0x00000000);

for (var xx:int=0; xx<bt.width; xx++)

{

for (var yy:int=0; yy<bt.height; yy++)

{

bmd.setPixel32(xx, bt.height-yy-1, bt.getPixel32(xx,yy));

}

return bmd;

}

public static function rightandleft(bt:BitmapData):BitmapData

{

var bmd:BitmapData = new BitmapData(bt.width, bt.height, true, 0x00000000);

for (var yy:int=0; yy<bt.height; yy++)

{

for (var xx:int=0; xx<bt.width; xx++)

{

bmd.setPixel32(bt.width-xx-1, yy, bt.getPixel32(xx,yy));

}

return bmd;

}

public static function turn90(bt:BitmapData):BitmapData

{

var bmd:BitmapData = new BitmapData(bt.height, bt.width, true, 0x00000000);

for (var yy:int=0; yy<bt.height; yy++)

{

for (var xx:int=0; xx<bt.width; xx++)

{

bmd.setPixel32(yy,bt.width-xx, bt.getPixel32(xx,yy));

}

return bmd;

}

public static function turn270(bt:BitmapData):BitmapData

{

var bmd:BitmapData = new BitmapData(bt.height, bt.width, true, 0x00000000);

for (var yy:int=0; yy<bt.height; yy++)

{

for (var xx:int=0; xx<bt.width; xx++)

{

bmd.setPixel32(bt.height-yy-1,bt.width-xx, bt.getPixel32(xx,yy));

}

return bmd;

}

7. Flex打包swc檔案

FlexSDK中的compc指令可以将那些帶包名的as檔案編譯成swf檔案，并打包成一個檔案，檔案的擴充名是.swc,在Flash中這叫元件。其實元件檔案格式實際上是zip, 把擴充名.swc改成.zip用winrar打開看看就知道了

假如是自己開發，可以先在本地把目錄規劃好，調試無誤以後在單獨拿出去打包

假如在"D:\項目\Tool\huxiaowei\classes"目錄下有兩個AS檔案"GameTask.as"，"MovieTask.as"，在Adobe Flex 3 SDK Command Prompt指令行下輸入：

cd 項目\tool

compc -include-sources huxiaowei\classes\ output d:/hxwLib.swc

這樣就将兩個AS檔案打包到d:\下名為hxwLib.swc包裡了

在項目裡就可以删除掉AS檔案，隻需要再ActionScript Build Path -> Library Path -> Add SWC下應用這個hxwLib.swc即可

PS:如果有一個AS是基于hxwLib.swc編寫的，如果要将這個as編譯成不必依賴元件的swf(即可以單獨存在)，可以進一步在指令行運作：

amxmlc -library-path=c:/3rd.swc HelloWorld.as

flashplayer HelloWorld.swf

8. 阻止事件冒泡

Event提供兩個方法來阻止事件冒泡，evt.stopImmediatePropagation()和evt.stopPropagation()

如果某對象的一個事件同時添加多個監聽，stopPropagation将把該事件注冊的所有監聽處理函數執行完後，再阻止該事件繼續向上冒泡；而stopImmediatePropagation方法将本次處理函數執行完後就立即阻止事件繼續向上冒泡(即同一事件的其它監聽函數将不會執行)。

如果某對象的一個事件有多個監聽，stopPropagation()将處理完所有的監聽後，再阻止該事件冒泡；而stopImmediatePropagation()僅處理本次監聽，然後立即阻止事件冒泡

package

{

import flash.display.Sprite;

import flash.display.StageScaleMode;

import flash.events.MouseEvent;

import flash.events.TextEvent;

public class Test extends Sprite

{

public function Test()

{

stage.scaleMode = StageScaleMode.NO_SCALE;

var box:Sprite = new Sprite();

this.addChild(box);

with(box)

{

graphics.beginFill(0xCCCCCC);

graphics.drawRect(0,0,200,200);

graphics.endFill();

addEventListener(MouseEvent.CLICK,onBoxClick);

}

var item:Sprite = new Sprite();

box.addChild(item);

with(item)

{

graphics.beginFill(0x000000);

graphics.drawRect(0,0,100,100);

graphics.endFill();

x = y = 50;

addEventListener(MouseEvent.CLICK,onItemClick,false,1);

addEventListener(MouseEvent.CLICK,onItemClick2,false,2);

}

private function onBoxClick(evt:MouseEvent):void

{

trace("box click");

}

private function onItemClick(evt:MouseEvent):void

{

trace("item click 1");

}

private function onItemClick2(evt:MouseEvent):void

{

trace("item click 2");

//不再執行onItemClick

//evt.stopImmediatePropagation();

//還是會執行onItemClick

evt.stopPropagation();

}

9. 周遊對象屬性

var obj:Object = new Object();

obj.aa = "AAA";

obj.bb = "BBB";

obj.cc = "CCC";

for(var str:String in obj)

{

trace("屬性"+str+"的值是："+obj[str]);

}

//隻能獲得屬性的value，不能獲得key

for each(var p:String in obj) {

trace(p);

}

10. 用代碼去執行一個對象的點選事件

sprite.dispatchEvent(new MouseEvent(MouseEvent.CLICK));

AS3常用代碼

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