Android: Trigger redraw after a colour change

Question

I am currently working on a Connect four game.

My game works by the user pressing the 'New game' button. This then draws 42 (7*6) green circles to screen. These circles are used to represent holes on the connect four board i.e. green circles currently do not contain a player's token/counter

At this moment in time I am working on adding the tokens/counters. I have got code working (to a certain point) that enables the user to pick a column. Using log.d() It seems that I am successful changing the colour value of the gaps. My problem is that I do not know how to send this changing in colour to the View i.e. so the gap actually changes from green to red (player's token colour).

How can I send a request to the View so the gap is re-drawn?

N.B. Sorry for the lack of code but it is currently messy and not fully working. The View is controlled by a ConnectFourView.java (View), the game screen is Board.java (Model) and the code that works out which column has been selected Gaps.java (controller)

Answer 1

Just call invalidate() on your view and it will be redrawn