我无法从工作区中删除项目。 Eclipse抛出NPE，我有NFI如何解决这个问题。
java.lang.NullPointerException
at org.eclipse.ltk.ui.refactoring.resource.DeleteResourcesWizard$DeleteResourcesRefactoringConfigurationPage.createControl(DeleteResourcesWizard.java:89)
at org.eclipse.ltk.internal.ui.refactoring.RefactoringWizardDialog2.createContents(RefactoringWizardDialog2.java:631)
at org.eclipse.jface.window.Window.create(Window.java:431)
at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1089)
at org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation$1.run(RefactoringWizardOpenOperation.java:171)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation.run(RefactoringWizardOpenOperation.java:192)
at org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation.run(RefactoringWizardOpenOperation.java:115)
at org.eclipse.ltk.internal.ui.refactoring.actions.DeleteResourcesHandler.execute(DeleteResourcesHandler.java:40)
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.executeCommandInContext(HandlerService.java:270)
at org.eclipse.ui.internal.ide.actions.LTKLauncher.runCommand(LTKLauncher.java:95)
at org.eclipse.ui.internal.ide.actions.LTKLauncher.openDeleteWizard(LTKLauncher.java:47)
at org.eclipse.ui.actions.DeleteResourceAction.run(DeleteResourceAction.java:481)
at org.eclipse.jdt.internal.ui.refactoring.reorg.DeleteAction.run(DeleteAction.java:162)
at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:274)
at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:250)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
at org.eclipse.jface.commands.ActionHandler.execute(ActionHandler.java:119)
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.keys.WorkbenchKeyboard.executeCommand(WorkbenchKeyboard.java:468)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:786)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:885)
at org.eclipse.ui.internal.keys.OutOfOrderListener.handleEvent(OutOfOrderListener.java:76)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1258)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1282)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1267)
at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1294)
at org.eclipse.swt.widgets.Widget.gtk_key_press_event(Widget.java:730)
at org.eclipse.swt.widgets.Control.gtk_key_press_event(Control.java:2841)
at org.eclipse.swt.widgets.Composite.gtk_key_press_event(Composite.java:734)
at org.eclipse.swt.widgets.Tree.gtk_key_press_event(Tree.java:1977)
at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1743)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:4796)
at org.eclipse.swt.widgets.Tree.windowProc(Tree.java:3485)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:4360)
at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method)
at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:8189)
at org.eclipse.swt.widgets.Display.eventProc(Display.java:1238)
at org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Native Method)
at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS.java:2237)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3159)
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(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:620)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:575)
at org.eclipse.equinox.launcher.Main.run(Main.java:1408)
at org.eclipse.equinox.launcher.Main.main(Main.java:1384)
这是我的环境： -
eclipse.buildId=M20110210-1200 java.version=1.6.0_21 java.vendor=Sun Microsystems Inc. BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en_AU Framework arguments: -product org.eclipse.epp.package.jee.product Command-line arguments: -os linux -ws gtk -arch x86 -product org.eclipse.epp.package.jee.product
答案 0 :(得分：4)
相关的Eclipse错误是345477。在该帖子中，引用了一些ia32-libs错误。该错误中建议的解决方法是在执行Eclipse之前执行以下操作：
export GDK_PIXBUF_MODULE_FILE=/usr/lib32/gdk-pixbuf-2.0/2.10.0/loaders.cache
即使使用Ubuntu-Mono-Light图标集，我也可以确认这是有效的。我在Ubuntu 11.04 64位上使用Java 32位上的Eclipse 32位。
答案 1 :(得分：1)
我注意到在Ubuntu 11.04上使用Eclipse 3.6 SR2的同样问题。它在Ubuntu 10.04和Windows 7上使用相同版本的Eclipse工作正常。 NullPointerException来自DeleteResourcesWizard的{{3}}，因为image为null：
87 Image image= parent.getDisplay().getSystemImage(SWT.ICON_QUESTION);
88 Label imageLabel = new Label(composite, SWT.NULL);
89 imageLabel.setBackground(image.getBackground());
我发现Ubuntu 11.04的快速修复方法是使用不同的主题（如Clearlooks）或图标集（如GNOME）。对我不起作用的默认主题是Ambiance，默认为Ubuntu-Mono-Dark图标集。我想它必须缺少SWT.ICON_QUESTION所需的图标（或者它已被重命名），并且Eclipse没有优雅地处理找不到它。
答案 2 :(得分：0)
最接近的错误（issue 302791）在3.6中修复（我怀疑你有，并且版本ID为M20110210-1200）
您的错误似乎发生在流程的最开始，因为它无法创建`DeleteResourcesWizard。
可能是因为：
如果您每次都可以重现问题，那么值得一个新的Eclipse错误报告。
答案 3 :(得分：0)
谢谢，我已将我的图标集更改为GNOME并且它有效！ Ubuntu 11.04有史以来最糟糕的Ubuntu！看起来Ubuntu的目标是像Windows ME和Vista ......