＆QUOT;无法获取项目＆QUOT系统库;之后，我升级到Android 2.3的SDK和ADT 8.0 [英] "Unable to get system library for project" after I upgraded to Android SDK 2.3 and ADT 8.0

问题描述

今天我升级到Android SDK 2.3，我还升级了Eclipse插件Androi开发工具8.0（从0.9.9）。我也升级我的Java开发工具包1.6_22。

现在在Eclipse中，我得到的很多错误在我所有的Andr​​oid项目。

该错误信息是这样的：

  

该java.lang.Object类型不能得到解决。这是间接地从必需的.class文件中引用。

我怎样才能解决这个问题，所以我可以再次使用我的Andr​​oid项目？

在这些项目的构建路径，我没有任何引用到的android.jar 但消息：

  

无法获取项目的系统库

解决方案

这是相当困难的回答，给您提供的信息有限。下面是一些建议：

• 请确保适当的的android.jar 是在你的构建路径，因为这是的java.lang.Object 将来自

• 做一个项目>清洁，以确保您有1.6 的.class 文件，如果这是问题的一部分。

• 试着从头创建一个新的项目，看看是否能工程。

Today I upgraded to Android SDK 2.3 and I also upgraded the Eclipse Plugin Androi Developer Tools 8.0 (from 0.9.9). I also upgraded my Java Development Kit to 1.6_22.

Now in Eclipse I get many errors in all my Android projects.

The error messages are like:

The type java.lang.Object cannot be resolved. It is indirectly referenced from required .class files.

How can I fix this so I can use my Android projects again?

In the Build Path for these projects, I don't have any references to an android.jar but a message:

Unable to get system library for project

解决方案

That is rather difficult to answer, given the limited information you have supplied. Here are some suggestions:

• Make sure that an appropriate android.jar is in your build path, since that is where java.lang.Object would come from.

• Do a Project > Clean, to make sure you have 1.6 .class files, in case that is part of the problem.

• Try creating a new project from scratch and see if that works.

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