Application package 'AndroidManifest.xml' must have a minimum of 2 segments

求助

我跟我朋友複製同一段程式碼貼上
可是我朋友的可以執行

我的卻會出現

Application package 'AndroidManifest.xml' must have a minimum of 2 segments
com.android.ide.eclipse.adt.internal.project.AndroidManifestHelper] Parser exception for C:\Users\ERIC CHEN\workspace\Touchevent\AndroidManifest.xml: Element type "activity" must be followed by either attribute specifications, ">" or "/>".

請問有沒有人知道這個該怎麼解決?
是我專案建置有問題還是哪邊有問題呢?

Element type "activity" must be followed by either attribute specifications