flash(flex)中嵌入完整HTML页面

有时候我们需要在Flex应用中嵌入HTML代码，根据嵌入HTML要求的不同有以下两种方法：
   1、Flex文本组件（Label、Text、TextArea）的htmlText属性支持一些基本的HTML代码，例如：

< mx:TextArea >
< mx:htmlText >
[CDATA[

> < font size ="15" color ="#3399ff" > this is a html code font > p >
]]>
mx:htmlText >
mx:TextArea >

 

    2、我们可以将Flex应用嵌入到HTML页面中，然后通过Flex2中的ExternalInterface(Flex1.5使用getURL("javascript:javascriptMethod"))
    来实现Flex与HTML javascript的相互交互，进一步的，如果要在Flex应用中嵌入完整的HTML呢？ 
    其实实现的方法很简单，只需要使用HTML的Iframe标签来导入需嵌入的HTML页面，
    然后使用ExternalInterface调用相应的javasript将该Iframe移动到我们Flex页面需要嵌入HTML页面的部分之上就可以了

 

    也就是说，我们包含Flex SWF文件的HTML页面主要有三个部分：
1、Flex swf 插件容器，FlexBuilder自动生成部分

< object classid ="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
id ="IFrameDemo" width ="100%" height ="100%"
codebase ="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab" >
< param name ="movie" value ="http://www.7880.com/Info/IFrameDemo.swf" />
< param name ="quality" value ="high" />
< param name ="bgcolor" value ="#869ca7" />
< embed src ="/Files/BeyondPic/图形图像/2006-12/4/0612405352838399.swf" quality ="high" bgcolor ="#869ca7"
width ="100%" height ="100%" name ="detectiontest" aligh ="middle"
play ="true" loop ="false" quality ="high"

type ="application/x-shockwave-flash"
wmode ="opaque"
swLiveConnect ="true"
pluginspage ="http://www.macromedia.com/go/getflashplayer" >
embed >
object >

    2、HTML Iframe标签,绝对定位，用来导入HTML页面

< iframe id ="myFrame" name ="myFrame" frameborder ="0"
style ="position:absolute;background-color:transparent;border:0px;visibility:hidden;" />

    3、移动Iframe和在Iframe中导入需嵌入Flex中的HTML页面的脚本

< script >
function moveIFrame(x,y,w,h)
{
var frameRef = document.getElementById( " myFrame " );
frameRef.style.left = x;
frameRef.style.top = y;
frameRef.width = w;
frameRef.height = h;
}

function loadIFrame(url)
{
top.frames[ " myFrame " ].location.href = url;
}
< / script>

 

 

注：关键点，系统产生的html页面需要手动加入上述代码，否则没有效果，许多朋友看不到实例效果就是这个原因。

Flex中的导入Iframe页面和移动Iframe的代码如下：

import flash.external.ExternalInterface;
import flash.geom.Point;
import flash.net.navigateToURL;

private var __source: String;
private function moveIFrame(): void
{
var localPt:Point = new Point( 0 , 0 );
var globalPt:Point = this .localToGlobal(localPt);
ExternalInterface.call( " moveIFrame " , globalPt.x, globalPt.y, this .width, this .height);
}

public function set source(source: String): void
{
if (source) {
if ( ! ExternalInterface.available)
{
// TODO: determine if this Error is actually needed. The debugger
// build gives the error below. Assuming that this error will not show
// up in the release build but haven’t checked.
throw new Error( " The ExternalInterface is not available in this container. Internet Explorer ActiveX,
Firefox, Mozilla 1.7 . 5 and greater, or other browsers that support NPRuntime are required. " );
}
__source = source;
ExternalInterface.call( " loadIFrame " , source);
}
}

    两个方法分别直接调用使用ExternalInterface.call调用前面我们提到的HTML页面上的两个Javascript方法。另外一个要注意的是
继承自flash.display.DisplayObject类的localToGlobal方法的使用，该方法将基于Flash场景的坐标转换为基于全局本地坐标，也就是浏览器页面坐标：

//Flash场景0,0坐标 var localPt:Point = new Point(0, 0); //转换为浏览器页面坐标 var globalPt:Point = this.localToGlobal(localPt); 
这样就可以在Flex页面中嵌入任意的HTML页面了，为了方便，Brian写了个嵌入HTML页面的代理IFrame组件，该组件封装了所有需要的Flex端代码: 

xml version = " 1.0 " encoding = " utf-8 " ?>
< mx:Canvas xmlns:mx = " http://www.macromedia.com/2005/mxml "
resize = " callLater(moveIFrame) "
move = " callLater(moveIFrame) " >
< mx:Script >
[CDATA[
import flash.external.ExternalInterface;
import flash.geom.Point;
import flash.net.navigateToURL;
private var __source: String;
private function moveIFrame(): void {
var localPt:Point = new Point( 0 , 0 );
var globalPt:Point = this .localToGlobal(localPt);
ExternalInterface.call( " moveIFrame " , globalPt.x, globalPt.y, this .width, this .height);
}
public function set source(source: String): void {
if (source) {
if ( ! ExternalInterface.available)
{
// TODO: determine if this Error is actually needed. The debugger
// build gives the error below. Assuming that this error will not show
// up in the release build but haven’t checked.
throw new Error( " The ExternalInterface is not available in this container. Internet Explorer ActiveX, Firefox,
Mozilla 1.7 . 5 and greater, or other browsers that support NPRuntime are required. " );
}
__source = source;
ExternalInterface.call( " loadIFrame " , source);
}
}
public function get source(): String {
return __source;
}
override public function set visible(visible: Boolean): void {
super.visible = visible;
if (visible)
{
ExternalInterface.call( " showIFrame " );
}
else
{
ExternalInterface.call( " hideIFrame " );
}
}

]] >
mx:Script >
mx:Canvas >

    该IFrame组件有个source属性用来记录需要载入的嵌入HTML页面的地址，每次source属性更新时，调用ExternalInterface.call("loadIFrame", source)
调用javascript方法loadIFrame方法在HTML 页面中的IFrame中载入要嵌入的HTML页面。
另外，重载了Canvas的visible属性，以便在Canvas隐藏HTML页面中的IFrame。
如下使用该组件在Flex应用中嵌入HTML页面方法：

< IFrame id ="iFrame" source ="http://blog.eshangrao.com" width ="300" height ="400" />

转载于:https://www.cnblogs.com/tianlangshu/archive/2012/04/23/2467078.html