以我为例，当我打开Eclipse并将计算机设置为睡眠模式，然后醒来工作时，我出现了错误“无效的项目描述”。我需要做的唯一一件事就是关闭我的Eclipse并再次打开它。 我看到当打开Eclipse并让计算机进入睡眠或休眠时，会犯许多其他奇怪的错误!

今天我意外地解决了这个问题:

以下2个步骤可能不涉及，但不确定:

从(Eclipse菜单)调用*“/Window/Android SDK Manager”并更新a)“Android SDK Tools”“Android SDK平台工具”包 从Eclipse菜单“/Help/Check for Updates”调用并更新Eclipse。重新启动Eclipse。

以下步骤是必要的:

From eclipse menu "/File/Import/Android/Existing Android Code Into Workspace" Browse and select problematic project/or problematic projectS parent directory. Check "Copy projects into workspace". Check "Add projects into working sets". Press finish. [Optional scenario]: If project(s) and their containing folders have been renamed with the fully qualified package names then simply click on project node parent (where you see project package name instead of project's old name) in Eclipse and rename project with old name. Eclipse will rename folder too.

附注:在日蚀朱诺号上测试过。

Edit: Many times have passed since this answer and new Eclipse and Android SDK arrived. They have no much more problems during importing existing projects. The only thing one has to consider before importing is to move project folders(those ones one is willing to import) outside of eclipse workspace dir and then check checkboxes ("copy projects into working sets", "add projects into wokring sets") in import wizard dialog. Also I recommend doing this with latest Android SDK because it no more imports projects with dummy names and does not rename folders as it did in some custom cases.

如果你希望以以下方式从现有源代码打开一个新项目:

File -> Import -> General -> Existing Project into Workspace

你仍然有“无效的项目描述”的信息。 我只要进去就能解出来

File -> Switch Workspace

选择一个最近的工作场所。

我自己也在这个问题上挣扎了一段时间，我认为发生这种情况的原因是因为(对于Android)有两种方法将项目导入到工作区

1)文件>导入>General>现有项目到工作区 2)文件>导入>Android>现有代码到工作区

这里描述的错误与方法2有关。

对于方法1)，如果项目已经在工作区中，只要取消选中“将项目复制到工作区”框，就不会出现重叠问题。

编辑: 还有第三种方法，在我最初的文章中没有提到。

3)文件>新的>其他>Android>现有的Android项目到工作区

复制项目到你的工作空间，从eclipse文件>新建>项目创建新的Android应用程序项目，瞧。

Suppose you have something like: /prj/workspace/prj1 /prj/workspace/prj2 And your eclipse workspace is in /prj/workspace level (i.e. /prj/workspace/.metadata). If you're having problem importing prj1 and prj2, you can either move your .metadata somewhere else (/prj/.metadata, /prj/eclipse/.metadata, etc.) or create a sub level in workspace so that it looks like: /prj/workspace/android/prj1 /prj/workspace/android/prj2 And import prj1 and prj2 again. In another word: as long as prj1, prj2, and .metadata are not in the same level it will be fine.