如何從Flash Builder（Flex 3.5）獲取比「undefined」更好的信息？

我以前在控制檯窗口中看到過所有「未定義」，但我可以弄清楚它的含義。這一次，我在CollectionEvent (super(type, bubbles, cancelable);的構造函數的開始行中找到它）。我認爲這是由寫入XMLListCollection引發的。似乎沒有任何關於它的未定義 - 指針看起來不錯，所有參數也都這樣。它有一個相當大的堆棧跟蹤，但沒有關於什麼是未定義的有用信息。我如何進入下一個調試步驟？如何從Flash Builder（Flex 3.5）獲取比「undefined」更好的信息？

undefined 
    at mx.events::CollectionEvent()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\events\CollectionEvent.as:116] 
    at mx.collections::ListCollectionView/handlePropertyChangeEvents()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1245] 
    at mx.collections::ListCollectionView/listChangeHandler()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1120] 
    at flash.events::EventDispatcher/dispatchEventFunction() 
    at flash.events::EventDispatcher/dispatchEvent() 
    at mx.collections::XMLListAdapter/itemUpdateHandler()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:523] 
    at mx.collections::XMLListAdapter/itemUpdated()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:321] 
    at mx.collections::XMLListAdapter/xmlNotification()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:620] 
    at Function/()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\utils\XMLNotifier.as:81] 
    at AddressNode/DisplayLinesInLabels()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\AddressNode.as:192] 
    at AddressTree/DisplayLinesInLabels()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\AddressTree.as:37] 
    at UMTAControl/ValidateDisplayLines_()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:90] 
    at UMTAControl/OnChangeXML()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:82] 
    at UMTAControl/OnChXML()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:79] 
    at flash.events::EventDispatcher/dispatchEventFunction() 
    at flash.events::EventDispatcher/dispatchEvent() 
    at mx.collections::ListCollectionView/dispatchEvent()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:879] 
    at mx.collections::ListCollectionView/handlePropertyChangeEvents()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1248] 
    at mx.collections::ListCollectionView/listChangeHandler()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1120] 
    at flash.events::EventDispatcher/dispatchEventFunction() 
    at flash.events::EventDispatcher/dispatchEvent() 
    at mx.collections::XMLListAdapter/itemUpdateHandler()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:523] 
    at mx.collections::XMLListAdapter/itemUpdated()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:321] 
    at mx.collections::XMLListAdapter/xmlNotification()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:620] 
    at Function/()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\utils\XMLNotifier.as:81] 
    at AddressNode/DisplayLinesInLabels()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\AddressNode.as:192] 
    at AddressTree/DisplayLinesInLabels()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\AddressTree.as:37] 
    at UMTAControl/ValidateDisplayLines_()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:90] 
    at UMTAControl/OnChangeXML()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:82] 
    at UMTAControl/OnChXML()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:79] 
    at flash.events::EventDispatcher/dispatchEventFunction() 
    at flash.events::EventDispatcher/dispatchEvent() 
    at mx.collections::ListCollectionView/dispatchEvent()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:879] 
    at mx.collections::ListCollectionView/handlePropertyChangeEvents()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1248] 
    at mx.collections::ListCollectionView/listChangeHandler()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1120] 
    at flash.events::EventDispatcher/dispatchEventFunction() 
    at flash.events::EventDispatcher/dispatchEvent() 
    at mx.collections::XMLListAdapter/itemUpdateHandler()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:523] 
    at mx.collections::XMLListAdapter/itemUpdated()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:321] 
    at mx.collections::XMLListAdapter/xmlNotification()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:620] 
    at Function/()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\utils\XMLNotifier.as:81] 
    at AddressNode/DisplayLinesInLabels()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\AddressNode.as:192] 
    at AddressTree/DisplayLinesInLabels()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\AddressTree.as:37] 
    at UMTAControl/ValidateDisplayLines_()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:90] 
    at UMTAControl/OnChangeXML()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:82] 
    at UMTAControl/OnChXML()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:79] 
    at flash.events::EventDispatcher/dispatchEventFunction() 
    at flash.events::EventDispatcher/dispatchEvent() 
    at mx.collections::ListCollectionView/dispatchEvent()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:879] 
    at mx.collections::ListCollectionView/handlePropertyChangeEvents()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1248] 
    at mx.collections::ListCollectionView/listChangeHandler()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1120] 
    at flash.events::EventDispatcher/dispatchEventFunction() 
    at flash.events::EventDispatcher/dispatchEvent() 
    at mx.collections::XMLListAdapter/itemUpdateHandler()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:523] 
    at mx.collections::XMLListAdapter/itemUpdated()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:321] 
    at mx.collections::XMLListAdapter/xmlNotification()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:620] 
    at Function/()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\utils\XMLNotifier.as:81] 
    at AddressNode/DisplayLinesInLabels()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\AddressNode.as:192] 
    at AddressTree/DisplayLinesInLabels()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\AddressTree.as:37] 
    at UMTAControl/ValidateDisplayLines_()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:90] 
    at UMTAControl/OnChangeXML()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:82] 
    at UMTAControl/OnChXML()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:79] 
    at flash.events::EventDispatcher/dispatchEventFunction() 
    at flash.events::EventDispatcher/dispatchEvent()

來源

2013-04-11 Opux

將一個斷點UMTAControl.as的79行，然後點擊「進入」了很多。要小心檢查事物的每一步 – JeffryHouser 2013-04-11 15:25:29

我認爲在這種情況下未定義的是實際的錯誤信息。通常，在堆棧跟蹤中，這是錯誤文本的位置。按照上面的建議，您甚至可以將斷點設置爲在AddressNode.as第192行的堆棧跟蹤中稍高一點雖然這一切看起來都很奇怪，但不確定代碼是多麼有幫助。 – 2013-04-11 16:48:44

這麼多重複的行。某種類型的XML遞歸......或者「堆棧溢出」？但是，你很幸運有堆棧跟蹤，調試adt崩潰是莫大的再...有趣。 – user1875642 2013-04-11 17:14:01

這是正確的「不確定」的其他情況下都是由於無限遞歸導致堆棧溢出（即給出了深思熟慮的反饋，而不是那種）。

我想象到這些回調與MFC模型類似，消息排隊，只有當應用程序開發人員的代碼完成執行時才處理（我認爲重複消息有時可能已合併）。很明顯，這不是發生了什麼 - 正在進行更改，並立即執行回調。我想我將無法可靠地檢測更改此XMLListCollection :(

謝謝你們

來源

2013-04-12 14:35:15 Opux

如何從Flash Builder（Flex 3.5）獲取比「undefined」更好的信息？

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