Hello,
I am happy to see you are playing with UI7Kit. Because I don't know chinese, I had trouble to understand what you discussed exactly. But I found you are meeting some bugs, problems or missing features.
Please feel free to report any bugs, problems or missing features to github project. I am trying to make UI7Kit as effortless iOS7 compatibility layer.
About cocoapods: It is used to manage dependencies. You can do it manually, but cocoapods is easier usually. (UI7Kit has very many files and resources to manage them manually)
About wrong implementations or resources: Please let me know which one is wrong. I need your help and I cannot fix bugs without bug reports :)
About private methods: I am removing it as quickly as possible. Usually they are remained because I don't know which one raises warnings or rejection. Please report them.
Thanks!