我的android项目用红色“标记”；X"；

我使用的是EclipseIndigo，内容辅助功能工作正常。 但当我安装EclipseIndigo时，我发现Content Assist ctrl+space不起作用。 我所做的是创建新的工作空间，并将我创建的旧项目导入在EclipseJuno中创建的新工作空间

现在，内容辅助正在工作，但我导入的所有项目都用红色“X”标记 这就是我的问题

控制台输出：

[2013-05-24 22:40:12 - TestCreatOptionMenu] Unable to resolve target 'Google    
Inc.:Google APIs:10'
[2013-05-24 22:40:12 - WeatherFragment] Unable to resolve target 'Google Inc.:Google   
APIs:8'
[2013-05-24 22:40:12 - Vortex2] Unable to resolve target 'Google Inc.:Google APIs:10'
[2013-05-24 22:40:12 - URLTagger] Unable to resolve target 'android-10'
[2013-05-24 22:40:12 - URLHandler] Unable to resolve target 'android-8'
[2013-05-24 22:40:13 - TouchEvent] Unable to resolve target 'Google Inc.:Google   
 APIs:10'
[2013-05-24 22:40:13 - ToggleButtonDemo] Unable to resolve target 'android-10'
[2013-05-24 22:40:13 - TimeDateTest] Unable to resolve target 'Google Inc.:Google    
APIs:10'
[2013-05-24 22:40:13 - ThumbnailCameraPicture] Unable to resolve target 'Google   
Inc.:Google APIs:10'
[2013-05-24 22:40:13 - Text_Image_Switcher] Unable to resolve target 'android-10'
[2013-05-24 22:40:13 - TestXML] Unable to resolve target 'Google Inc.:Google APIs:10'
[2013-05-24 22:40:13 - TestOnKeyPressed] Unable to resolve target 'android-10'
[2013-05-24 22:40:13 - TestLocation] Unable to resolve target 'Google Inc.:Google   
APIs:10'
[2013-05-24 22:40:13 - Test9] Unable to resolve target 'android-10'
[2013-05-24 22:40:13 - Test4] Unable to resolve target 'Google Inc.:Google APIs:8'
[2013-05-24 22:40:13 - Test3] Unable to resolve target 'android-10'

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查看“问题”窗口，让我们知道问题是什么……启动Android SDK管理器，检查是否安装了所有必需的SDK平台和Google API，特别是Android 2.3.3（API 8）和Android 2.2（API 10），如果您已将adt更新为rev 22请检查此项