Android:I need a slide in calculator type soft keypad a la iphone

I'm attempting to replicate on android an iphone app my company had developed externally.

My need is simple but it seems hard to achieve under android. I have three numeric edittext inputs. Each should take only decimal numeric values. So numbers 0-9 and "." or ",". On the iphone this was achieved by a slide in calculator style keypad with one of the buttons a "GO" button that when pressed hides the keypad and, if all the inputs have valid values triggers a calculation that displays values on the screen.

I've tried the android phone input type and this is very close to what I want but I have no idea how to replicate the go button. I have put a calculate button on the main interface itself but I can't get the keyboard to go again once it is opened.

So can I either

A. Modify the layout of the phone keypad in some way to change one of the buttons to be GO (Calculate) and intercept the keypress or

B. Do I have to create my own keypad in which case how do I go about sliding it in and out over the top of the current view?

thanks开发者_如何转开发 guys

See android:imeActionId and android:imeActionLabel for your GO button.