The above picture comes from Shensuanzi student version app. I would like to ask what are the ideas for such a keyboard and what open source libraries can implement it
曾经蜡笔没有小新2017-05-16 13:32:51
Google search
scientific calculator android github
Finding a library should solve your problem
https://github.com/anubhavshr...
As for the keyboard, you have to write it yourself. This seems to be missing