一般情况下，当我们写了一个继承自flex组件并往里面添加了子组件，然后想用标签等方式添加子组件时候报错了，那如何解决这一的问题，自定义组件代码如下：
<?xml version="1.0" encoding="utf-8"?> <mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml" width="400" height="300"> <mx:Metadata> [DefaultProperty("children")] </mx:Metadata> <mx:Script> <![CDATA[ private var _children:Array = []; private var _childrenChanged:Boolean = false;
public function set children(value:*):void { if(value is DisplayObject) _children = [value]; else _children = value;
_childrenChanged = true; invalidateProperties(); }
public function get children():Array { return _children; }
protected override function commitProperties():void { super.commitProperties();
if(_childrenChanged) { for each(var child:DisplayObject in _children) { contentBox.addChild(child); } } }
]]> </mx:Script> <mx:Canvas id="contentBox" width="100%" height="100%"/> </mx:Canvas> |