AS3 列表问题

发布于 2024-08-22 04:02:03 字数 937 浏览 4 评论 0原文

我正在尝试动态地将 List 对象添加到舞台，但是当调用某一行时我总是收到错误：

input.addItem({label:"test",data:"test"});

运行时抛出错误：

TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/addChildAt()
at fl.controls::BaseButton/fl.controls:BaseButton::drawBackground()
at fl.controls::LabelButton/fl.controls:LabelButton::draw()
at fl.core::UIComponent/drawNow()
at fl.controls::List/fl.controls:List::drawList()
at fl.controls::List/fl.controls:List::draw()
at fl.core::UIComponent/fl.core:UIComponent::callLaterDispatcher()
TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/addChildAt()
at fl.controls::BaseButton/fl.controls:BaseButton::drawBackground()
at fl.controls::LabelButton/fl.controls:LabelButton::draw()
at fl.core::UIComponent/fl.core:UIComponent::callLaterDispatcher()

任何人有任何想法如何解决这个问题吗？感谢您的帮助。

原文

I'm trying to add a List object to the stage dynamically, but I always get an error when a certain line is called:

input.addItem({label:"test",data:"test"});

Error thrown at runtime:

TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/addChildAt()
at fl.controls::BaseButton/fl.controls:BaseButton::drawBackground()
at fl.controls::LabelButton/fl.controls:LabelButton::draw()
at fl.core::UIComponent/drawNow()
at fl.controls::List/fl.controls:List::drawList()
at fl.controls::List/fl.controls:List::draw()
at fl.core::UIComponent/fl.core:UIComponent::callLaterDispatcher()
TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/addChildAt()
at fl.controls::BaseButton/fl.controls:BaseButton::drawBackground()
at fl.controls::LabelButton/fl.controls:LabelButton::draw()
at fl.core::UIComponent/fl.core:UIComponent::callLaterDispatcher()

Anybody have any ideas how to fix this? Thanks for your help.

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