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当我添加工具提示然后删除工具提示时，单击舞台时出现以下错误：

ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.
    at flash.display::DisplayObjectContainer/getChildIndex()
    at mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::rawChildren_getChildIndex()[C:\Jenkins\workspace\flex-sdk_release-candidate\frameworks\projects\framework\src\mx\managers\SystemManager.as:2195]
    at mx.managers::SystemChildrenList/removeChild()[C:\Jenkins\workspace\flex-sdk_release-candidate\frameworks\projects\framework\src\mx\managers\SystemChildrenList.as:167]
    at mx.managers::ToolTipManagerImpl/http://www.adobe.com/2006/flex/mx/internal::reset()[C:\Jenkins\workspace\flex-sdk_release-candidate\frameworks\projects\framework\src\mx\managers\ToolTipManagerImpl.as:1379]
    at mx.managers::ToolTipManagerImpl/http://www.adobe.com/2006/flex/mx/internal::targetChanged()[C:\Jenkins\workspace\flex-sdk_release-candidate\frameworks\projects\framework\src\mx\managers\ToolTipManagerImpl.as:892]
    at mx.managers::ToolTipManagerImpl/http://www.adobe.com/2006/flex/mx/internal::checkIfTargetChanged()[C:\Jenkins\workspace\flex-sdk_release-candidate\frameworks\projects\framework\src\mx\managers\ToolTipManagerImpl.as:797]
    at mx.managers::ToolTipManagerImpl/http://www.adobe.com/2006/flex/mx/internal::toolTipMouseOverHandler()[C:\Jenkins\workspace\flex-sdk_release-candidate\frameworks\projects\framework\src\mx\managers\ToolTipManagerImpl.as:1623]

我已经尝试了我所知道的一切来摆脱它。这是我正在使用的代码：

// adding
PopUpManager.addPopUp(rulerPopUp, SystemManager.getSWFRoot(this));
toolTipPopUp = ToolTipManager.createToolTip("HELLO", event.stageX, event.stageY) as ToolTip;
ToolTipManager.currentToolTip = toolTipPopUp;

swfRoot.addEventListener(MouseEvent.MOUSE_MOVE, mouseRulerMoveHandler, true, EventPriority.CURSOR_MANAGEMENT, true);
swfRoot.addEventListener(MouseEvent.MOUSE_UP, mouseRulerUpHandler, true, EventPriority.CURSOR_MANAGEMENT, true);

// removing
swfRoot.removeEventListener(MouseEvent.MOUSE_MOVE, mouseRulerMoveHandler, true);
swfRoot.removeEventListener(MouseEvent.MOUSE_UP, mouseRulerUpHandler, true);

if (toolTipPopUp && toolTipPopUp.stage) {
    ToolTipManager.destroyToolTip(toolTipPopUp);
    toolTipPopUp = null;
}

谁能看到我收到此错误的原因？

4

1 回答 1

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似乎将 currentToolTip 设置为 null 可以解决此问题。

if (toolTipPopUp && toolTipPopUp.stage) { ToolTipManager.destroyToolTip(toolTipPopUp); ToolTipManager.currentToolTip = null; // 添加这一行 toolTipPopUp = null; }

从那以后我没有发生任何错误。

于 2015-06-06T08:51:46.237 回答