[Mac os]storyboard 视图为什么变成代码?怎么恢复

[Mac os]storyboard 视图为什么变成代码?如何恢复??storyboard 文件上右键, Open As - Interface Builder

[Mac os]storyboard 视图为什么变成代码?如何恢复?

?storyboard 文件上右键, Open As -> Interface Builder - iOS Storyboard?