问题
I am trying to make a function so that I request a 'manager override' where it presents a screen for a manager to enter their password and press an approve button. How should I do this? Will it have to be in multiple functions? Is there a way that I can call one function and it present the information back? Would a completion work for what I need? I have no ideas where to start for this.
My set up is as follows:
A view controller asks for manager approval, then a screen slides up with text boxes and an approve button. I want the approve button to trigger authenticating and dismissing the screen
回答1:
Assuming you don't want a Framework target (that sounds like overkill for what you want) simply mark the function as "public" and move it outside of any class. I just tried in a sample project and it works.
It looks important - remember to keep it in a file already in the project. (My sample project didn't work with menu option File|Add|New|File.)
Now, if you really want portability, check out how to create a Framework project.
来源：https://stackoverflow.com/questions/40869865/function-across-multiple-view-controllers