Android的程序是不是在Eclipse工作

我的Eclipse工作正常，直到我更新了我的sdk.Then suddently一切都开始显示出一点weirder.Actyually我在Ubuntu 12.04，这显示出停止甚至Java项目updation.When后，我点击新建 - >项目，我可以找不到既不的Java / Android.I甚至不能找到XML.I已经做了一些什么sites.But列出这么多的方法正在为me.Can请人提出解决方案。

My Eclipse was working fine until i updated my sdk.Then suddently everything started to show little weirder.Actyually I was working in Ubuntu 12.04 ,Which stopped showing even Java projects after updation.When I click New-->Project I can't find neither java/Android.I cant even find XML.I have done so many methods listed in some sites.But nothing is working for me.Can anyone please suggest a solution.

I have even tried in windows.But same problem happened & it says " Android Development Tools (20.0.0.v201206242043-391819) requires plug-in "org.eclipse.core.runtime (3.6.0)", or later version."

该怎么办？
请给我一个解决方案

what to do? please give me a solution

请多关照。