FlipperTime
Lurker
I'm trying to create a custom Android Keyboard, just trying to learn the process. 
I've been relatively successful, as I'm just learning the basics for now:

My question is, how can I achieve this effect from the usual keyboard in which I keep a key pressed and a list of more options will pop up?

Any help is appreciated.

I've been relatively successful, as I'm just learning the basics for now:

My question is, how can I achieve this effect from the usual keyboard in which I keep a key pressed and a list of more options will pop up?

Any help is appreciated.