[2010-09-29 11:02:37 - UIandroid] res/layout/main.out.xml:0: Originally defined here.

[2010-09-29 11:02:37 - UIandroid] E:/android/UIandroid/res/layout/main.out.xml:1: error: Error parsing XML: no element found

[2010-09-29 11:02:41 - UIandroid] res/layout/main.xml:0: error: Resource entry main is already defined.

[2010-09-29 11:02:41 - UIandroid] res/layout/main.out.xml:0: Originally defined here.

[2010-09-29 11:02:41 - UIandroid] E:/android/UIandroid/res/layout/main.out.xml:1: error: Error parsing XML: no element found

[2010-09-29 11:03:20 - UIandroid] Error in an XML file: aborting build.

[2010-09-29 11:19:14 - UIandroid] Error in an XML file: aborting build.

郁闷了，网上找了很久，有说是直接运行了res/main.xml之后的结果，我按他们所说的，删除了main.out.xml再次运行还是不行，没办法只好去网上拼命的找，

终于找到了：

[解決方式]

1) 把 main.xml.out 刪除

2)  Eclipse/ Project/ Clean

关键是第2步，需要清楚焦点！！！！