Android布局编辑器无法打开文件

我正在使用Eclipse3.6和GoogleAPI的10修订版1完成Android谷歌地图教程

但是，每当我尝试编辑“Main.xml”文件时，编辑器都会引发以下错误：

java.lang.NullPointerException
    at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.renderWithBridge(Unknown Source)
    at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.recomputeLayout(Unknown Source)
    at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.activated(Unknown Source)
    at com.android.ide.eclipse.adt.internal.editors.layout.LayoutEditor.pageChange(Unknown Source)
    at org.eclipse.ui.part.MultiPageEditorPart.setActivePage(MultiPageEditorPart.java:1067)
    at org.eclipse.ui.forms.editor.FormEditor.setActivePage(FormEditor.java:607)
    at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:352)
    at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:670)
    at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:465)
    at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
    at org.eclipse.ui.internal.EditorReference.getEditor(EditorReference.java:289)
    at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2863)
    at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2768)
    at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2760)
    at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2711)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2707)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2691)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2674)
    at org.eclipse.ui.ide.IDE.openEditor(IDE.java:683)
    at com.android.ide.eclipse.adt.internal.wizards.newxmlfile.NewXmlFileWizard.performFinish(Unknown Source)
    at org.eclipse.jface.wizard.WizardDialog.finishPressed(WizardDialog.java:811)
    at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:430)
    at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:624)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
    at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
    at org.eclipse.jface.window.Window.open(Window.java:801)
    at org.eclipse.ui.internal.handlers.WizardHandler$New.executeHandler(WizardHandler.java:254)
    at org.eclipse.ui.internal.handlers.WizardHandler.execute(WizardHandler.java:274)
    at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293)
    at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
    at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
    at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
    at org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241)
    at org.eclipse.ui.internal.actions.CommandAction.runWithEvent(CommandAction.java:157)
    at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
    at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
    at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
    at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438)
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1407)

如果有任何关于我做错了什么/可能的修复的线索，我们将不胜感激

谢谢

---

NigelT

嗯，我不知道是什么导致了这个问题，但它看起来是eclipse中图形xml编辑器的问题。作为一种快速解决方法，您是否尝试过在包资源管理器中右键单击

main.xml

，然后执行

'Open With->Text Editor'

？

hmmm，我不知道是什么原因导致了这个问题，但这似乎是eclipse中图形xml编辑器的问题。作为一种快速解决方法，您是否尝试过在包资源管理器中右键单击

main.xml

，然后执行

'openwith->Text Editor'

？

我刚刚遇到了一些类似的问题。原来我没有正确安装所有的web工具插件。查看如何安装Web工具：

（或

../helios/

，如果这是您的Eclipse风格的话）

如果您确实喜欢我，并且只安装了部分web工具，那么以后可能会出现问题。如果您想加载完整的插件，请先返回并卸载部分安装的插件

卸载导航：

[Eclipse（Mac）| Help（Win）]->关于eclipsesdk->安装细节->选择插件->卸载…

安装导航：

---

帮助->安装新软件…->使用：

我刚刚遇到了一些类似的问题。原来我没有正确安装所有的web工具插件。查看如何安装Web工具：

（或

../helios/

，如果这是您的Eclipse风格的话）

如果您确实喜欢我，并且只安装了部分web工具，那么以后可能会出现问题。如果您想加载完整的插件，请先返回并卸载部分安装的插件

卸载导航：

[Eclipse（Mac）| Help（Win）]->关于eclipsesdk->安装细节->选择插件->卸载…

安装导航：

---

帮助->安装新软件…->使用：

您的Eclipse+插件是最新的吗？您的Eclipse+插件是最新的吗？使用文本或xml编辑器打开可以正常工作-看起来只是图形编辑器变得混乱了，我会在Google ADT上打开一个bug。如果看不到问题报告，他们就无法修复问题。使用文本或xml编辑器打开可以正常工作-看起来只是图形编辑器变得混乱了。我会使用堆栈并在Google ADT上打开一个bug。如果看不到问题报告，他们就无法解决问题。