Opening screens from other screens in Android apps is straight forward: create an Intent object, stuff some parameters into it, use it to launch the other Activity, and dig out the passed parameters at the other end.
Unfortunately, if you blindly follow Googles standard examples of how to do this, you will end up sprinkling potential bugs around your codebase. Let’s look at how to tighten it up a bit.
I am available for consulting/contracting again in Q1 2018: get in touch!
EDIT: I am booked again, until Q3 2018. However: feel free to contact me if you want to discuss future possibilities!