升级至Android ADT版本22和清洁我的项目后，R.java文件失踪。我不能使用setViewContent（R.layout.activity_main），因为该活动不能引用XML布局（由于缺少R.java）。此外，使用（Ctrl +空格键）时获得的setContentView建议，在code未键入。当看着错误日志，它表明，有一个未处理的事件循环异常。插件涉及的是org.eclipse.ui。

After upgrading to Android ADT version 22 and cleaning my project, the R.java files went missing. I can't use setViewContent(R.layout.activity_main) because the activity cannot reference to the xml layout (due to the missing R.java). Also, when using the (ctrl + space) to get suggestions for setContentView, the code is not typed in. Upon looking at the error log, it shows that there was an "Unhandled event loop exception". The plug-in involved is the org.eclipse.ui.

此外，每当我创建一个新的Hello World项目，该根文件夹为空。 几个小时后，我试图android的工作室。但我不喜欢那儿。然后，当我回到Eclipse的，还有的SDK平台工具的更新和构建工具。我更新了他们，但我仍然得到错误。

Also, whenever I create a new Hello World project, the gen folder is empty. After a few hours, I tried the android studio. But I didn't like it there. Then, when I went back to Eclipse, there was an update for SDK platform tools and build tools. I updated them but I still get the errors.

我试图清理项目，但没有运气。似乎是什么问题？

I tried cleaning the project but no luck. What seems to be the problem?

推荐答案

我有同样的问题，只是解决了它。

I had the same problem just solved it.

查询：Java/Eclipse - 没有更多的R档曾经

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