Flash Builder。創建動態mxml包實例

Question

所以，我剛開始Flash構建器。給點

我的應用程序包結構：

index.mxml (default) <s:application/> 
    [main] 
    signin.mxml <s:form/> 
    dashboard.mxml <s:group/> 
     [content] 
     home.mxml 
     data_a.mxml 
     data_b.mxml 
     post.mxml 
     and-many-more-mxml-file.mxml 
     etc.mxml 

index.mxml工作的（像）前端控制器。那隻會加載main封裝組件（signin,dashboard）。

index.mxml fx:script：

import main.signin; 
import main.dashboard; 

public var m_signin:main.signin = new signin(); 
public var m_dashboard:main.dashboard = new dashboard(); 

private function app_ready():void { //creationComplete 
    //...service to check session... 
    if(is_signed) { 
     addElement(m_dashboard); 
    } else { 
     addElement(m_signin); 
    } 
} 

成功。

我們假設用戶已簽名。然後從main/dashboard.mxml我想從數組中定義的main.content.*加載包。

主/ dashboard.mxml fx:script：

protected var dashboard_content:Object = {}; 
protected var dashboard_content_list:Array = [ 
    ['home','Home Admin'], 
    ['user_a','User Data A'], 
    ['user_b','User Data B'] 
    //many more. 
]; 
for (var i:int = 0; i < dashboard_content_list.length; i++) { 
    var content_class:Class = Class(getDefinitionByName('main.content.'+dashboard_content_list[i][0])); 
    var content_obj:Object = new content_class(); 
    dashboard_content[dashboard_content_list[i][0]] = content_obj; //for refference each component 
} 

每個陣列從dashboard_content_list解釋：

0: package suffix that i want to load (ex: `main.content.home`). 
1: button label (for each content). 

但該循環仍然沒有工作，總是ReferenceError: Error #1065。

所以我想要的待辦事項是： 加載main.content.*包類，並將其保存在Object在main/dashboard.mxml。

我的一些REFFERENCE（but still not working.）的： http://www.untoldentertainment.com/blog/2008/11/12/as3-tutorials-instantiate-a-class-dynamically/ http://blogs.adobe.com/cantrell/archives/2010/09/loading-classes-dynamically-in-actionscript-3.html http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/utils/package.html#getQualifiedSuperclassName() Instantiate a class from a string in ActionScript 3 Dynamically Creating Flex Components In ActionScript AS3: Cast Variable as Dynamic Type https://delfeld.wordpress.com/2009/04/21/object_from_class_name/ http://www.mikechambers.com/blog/2006/06/22/actionscript-3-get-a-class-reference-by-class-name/ http://www.rozengain.com/blog/2009/08/21/getdefinitionbyname-referenceerror-and-the-frame-metadata-tag/

respons到@SameerJain

我有嘗試：

import main.content.*; 

//inside creationComplete 
var c:Class = getDefinitionByName('main.content.home') as Class; // throw: ReferenceError: Error #1065 
var o:Object = new c(); 
trace(o); 

然後，我嘗試：

var c:Class = getDefinitionByName(getQualifiedClassName('main.content.home')) as Class; 
var o:Object = new c(); 
trace(c); // return [class String] 
trace(o); // return '' (empty) 
trace(main.content.home); // return [class home] <<< this what I want. 

解決

所以，@ SameerJain的回答引導我解決我的問題。

protected var dashboard_content_list:Array = [ 
    /* 
    index-0: the class inself <<< this solved my problem! 
    index-1: the label button 
    */ 
    [main.content.home,'Home Admin'], 
    [main.content.user_a,'User Data A'], 
    [main.content.user_b,'User Data B'] 
    //many more. 
]; 

對不起，我的英文不好:)
謝謝。

Answer 1

Flex不會從您的導入語句中編譯未使用的軟件包。所以確保你導入所有必需的包，並將它設置爲任何變量的類型，以便編譯器知道我們將在某處使用該包/類。一個可行的例子可能是

import main.content.*; 

private var dashboardhome:home; 
private var dashboarduser_b:user_a; 
private var dashboarduser_a:user_a; 

for (var i:int = 0; i < dashboard_content_list.length; i++) { 
    var content_class:Class = getDefinitionByName('main.content.'+dashboard_content_list[i][0]) as Class; 
    var content_obj:Object = new content_class(); 
    dashboard_content[dashboard_content_list[i][0]] = content_obj; 
}