[img]http://dl.iteye.com/upload/picture/pic/123765/bccfa25c-d667-3d1f-a2e3-d170579fb731.jpg[/img]

如果视图失效 使用以下命令

[img]http://dl.iteye.com/upload/picture/pic/123767/83076fc9-7682-3f69-a9db-b4462dfa3a55.jpg[/img]

复杂一点的视图

[img]http://dl.iteye.com/upload/picture/pic/123769/f04d46da-28f6-389b-9bae-682d03b2831c.jpg[/img]