How to determine which textfield is active swift

Question

I cant figure out which UITextField is currently active so i can clear its text if they hit cancel on a UIBarButtonItem. Here is my code. There is

Answer 1

I wrote a library to handle basic Form Creation Swift Pop Form. It doesn't use tags but rather sets a datasource that contains fields and uses indexPathForCell to query which is the active textfield. Check out the source code for more!