无法在Eclipse上打开XML文件

Question

我遇到了基本HelloWorld程序的问题。我没有改变基本的程序。但是，当我想在res/values文件夹中打开任何* .xml文件时，会出现一个异常：

发生错误。查看错误日志以获取更多详细信 显示java.lang.NullPointerException

这里是异常堆栈跟踪：

java.lang.NullPointerException 
at org.eclipse.wst.xml.core.internal.document.ElementImpl.getDefaultValue(ElementImpl.java:259) 
at org.eclipse.wst.xml.core.internal.document.ElementImpl.getAttributeNS(ElementImpl.java:329) 
at com.android.ide.eclipse.adt.internal.editors.uimodel.UiElementNode.getShortDescription(Unknown Source) 
at com.android.ide.eclipse.adt.internal.editors.ui.tree.UiModelTreeLabelProvider.getText(Unknown Source) 
at org.eclipse.jface.viewers.WrappedViewerLabelProvider.getText(WrappedViewerLabelProvider.java:108) 
at org.eclipse.jface.viewers.WrappedViewerLabelProvider.update(WrappedViewerLabelProvider.java:164) 
at org.eclipse.jface.viewers.ViewerColumn.refresh(ViewerColumn.java:152) 
at org.eclipse.jface.viewers.AbstractTreeViewer.doUpdateItem(AbstractTreeViewer.java:934) 
at org.eclipse.jface.viewers.AbstractTreeViewer$UpdateItemSafeRunnable.run(AbstractTreeViewer.java:102) 
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) 
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49) 
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175) 
at org.eclipse.jface.viewers.AbstractTreeViewer.doUpdateItem(AbstractTreeViewer.java:1014) 
at org.eclipse.jface.viewers.StructuredViewer$UpdateItemSafeRunnable.run(StructuredViewer.java:481) 
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) 
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49) 
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175) 
at org.eclipse.jface.viewers.StructuredViewer.updateItem(StructuredViewer.java:2141) 
at org.eclipse.jface.viewers.AbstractTreeViewer.updateChildren(AbstractTreeViewer.java:2689) 
at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefreshStruct(AbstractTreeViewer.java:1867) 
at org.eclipse.jface.viewers.TreeViewer.internalRefreshStruct(TreeViewer.java:721) 
at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefresh(AbstractTreeViewer.java:1842) 
at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefresh(AbstractTreeViewer.java:1799) 
at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefresh(AbstractTreeViewer.java:1785) 
at org.eclipse.jface.viewers.StructuredViewer$7.run(StructuredViewer.java:1487) 
at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1422) 
at org.eclipse.jface.viewers.TreeViewer.preservingSelection(TreeViewer.java:403) 
at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1383) 
at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1485) 
at org.eclipse.jface.viewers.ColumnViewer.refresh(ColumnViewer.java:537) 
at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1444) 
at org.eclipse.jface.viewers.ContentViewer.setContentProvider(ContentViewer.java:252) 
at org.eclipse.jface.viewers.StructuredViewer.setContentProvider(StructuredViewer.java:1641) 
at org.eclipse.jface.viewers.AbstractTreeViewer.setContentProvider(AbstractTreeViewer.java:2317) 
at org.eclipse.jface.viewers.TreeViewer.setContentProvider(TreeViewer.java:972) 
at com.android.ide.eclipse.adt.internal.editors.ui.tree.UiTreeBlock.changeRootAndDescriptors(Unknown Source) 
at com.android.ide.eclipse.adt.internal.editors.ui.tree.UiTreeBlock.createTreeViewer(Unknown Source) 
at com.android.ide.eclipse.adt.internal.editors.ui.tree.UiTreeBlock.createMasterPart(Unknown Source) 
at org.eclipse.ui.forms.MasterDetailsBlock.createContent(MasterDetailsBlock.java:161) 
at org.eclipse.ui.forms.MasterDetailsBlock.createContent(MasterDetailsBlock.java:142) 
at com.android.ide.eclipse.adt.internal.editors.resources.ResourcesTreePage.createFormContent(Unknown Source) 
at org.eclipse.ui.forms.editor.FormPage$1.run(FormPage.java:152) 
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) 
at org.eclipse.ui.forms.editor.FormPage.createPartControl(FormPage.java:150) 
at org.eclipse.ui.forms.editor.FormEditor.pageChange(FormEditor.java:471) 
at com.android.ide.eclipse.adt.internal.editors.AndroidEditor.pageChange(Unknown Source) 
at org.eclipse.ui.part.MultiPageEditorPart.setActivePage(MultiPageEditorPart.java:1067) 
at org.eclipse.ui.forms.editor.FormEditor.setActivePage(FormEditor.java:603) 
at com.android.ide.eclipse.adt.internal.editors.AndroidEditor.selectDefaultPage(Unknown Source) 
at com.android.ide.eclipse.adt.internal.editors.AndroidEditor.addPages(Unknown Source) 
at org.eclipse.ui.forms.editor.FormEditor.createPages(FormEditor.java:138) 
at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:348) 
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.PartPane.setVisible(PartPane.java:313) 
at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:180) 
at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:270) 
at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65) 
at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:473) 
at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1254) 
at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1207) 
at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1606) 
at org.eclipse.ui.internal.PartStack.add(PartStack.java:497) 
at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:103) 
at org.eclipse.ui.internal.PartStack.add(PartStack.java:483) 
at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:112) 
at org.eclipse.ui.internal.EditorSashContainer.addEditor(EditorSashContainer.java:63) 
at org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorAreaHelper.java:225) 
at org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAreaHelper.java:213) 
at org.eclipse.ui.internal.EditorManager.createEditorTab(EditorManager.java:778) 
at org.eclipse.ui.internal.EditorManager.openEditorFromDescriptor(EditorManager.java:677) 
at org.eclipse.ui.internal.EditorManager.openEditor(EditorManager.java:638) 
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2860) 
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:2682) 
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:651) 
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:610) 
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:365) 
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:168) 
at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:229) 
at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:208) 
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.jdt.internal.ui.packageview.PackageExplorerActionGroup.handleOpen(PackageExplorerActionGroup.java:373) 
at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart$4.open(PackageExplorerPart.java:526) 
at org.eclipse.ui.OpenAndLinkWithEditorHelper$InternalListener.open(OpenAndLinkWithEditorHelper.java:48) 
at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:845) 
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) 
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49) 
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175) 
at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:843) 
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1131) 
at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:1235) 
at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:264) 
at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:258) 
at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:298) 
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:2629) 
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2593) 
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2427) 
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:670) 
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) 
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:663) 
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) 
at org.eclipse.equinox.launcher.Main.main(Main.java:1383) 

我不知道我必须做的。

Answer 1

看起来你没有正确设置Eclipse。你有没有按照指示在： -

http://developer.android.com/sdk/installing.html