Android开发 - 在eclipse ide中为布局xml文件'缺少主题错误'

Question

我最近在Windows 7上安装了Eclipse IDE for Java Developers(版本:3.6.1)和Android SDK Platform 2.1update1.

我可以添加,编辑和运行项目代码,但是,在Workbench区域中,布局xml文件的Graphical Layout视图始终在右下方导航区域显示"缺少主题"消息.左Palette导航器区域正常,其余区域是空白的.

错误消息显示:"在AndroidXmlEditor中选择页面'0'失败"

The first and last 10 lines from the Exception Stack Trace reads:
java.lang.NullPointerException
at com.android.ide.eclipse.adt.internal.editors.layout.gle2.Gra phicalEditorPart.renderWithBridge(Unknown Source)
at com.android.ide.eclipse.adt.internal.editors.layout.gle2.Gra phicalEditorPart.recomputeLayout(Unknown Source)
at com.android.ide.eclipse.adt.internal.editors.layout.gle2.Gra phicalEditorPart.activated(Unknown Source)
at com.android.ide.eclipse.adt.internal.editors.layout.LayoutEd itor.pageChange(Unknown Source)
at org.eclipse.ui.part.MultiPageEditorPart.setActivePage(MultiP ageEditorPart.java:1067)
at org.eclipse.ui.forms.editor.FormEditor.setActivePage(FormEdi tor.java:607)
at com.android.ide.eclipse.adt.internal.editors.AndroidXmlEdito r.selectDefaultPage(Unknown Source)
at com.android.ide.eclipse.adt.internal.editors.AndroidXmlEdito r.addPages(Unknown Source)
at org.eclipse.ui.forms.editor.FormEditor.createPages(FormEdito r.java:138)
at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:348)

at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:369)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.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)

感谢您的帮助.

Answer 1

在布局编辑器的"图形布局"选项卡中,有一个下拉列表,用于选择要使用的Android版本.在你的情况下,它可能是空白的,所以选择一个版本,你很可能会去.

Answer 2

你只需选择主题.您可以在我的图像上看到您的xml设计: