Problems occurred while trying to save the state of the workbench.
Could not write metadata for '/.org.eclipse.jdt.core.external.folders'.
D:\Android2\workspace\.metadata\.plugins\org.eclipse.core.resources\.projects
\.org.eclipse.jdt.core.external.folders\.markers (系统找不到指定的路径。)
------解决思路----------------------
把workspace目录里面删除重启eclipse试试