Push Button Application

how to implement a small project. I have the control logic figured out I am just new to android development to have a full handle on the task at hand.

I have essentially a 5x4 matrix of buttons that I want to at random light up in a randomized time between 6 and 30 seconds between light up.. The person needs to push the button back in to reset it before 5 seconds or a small red X appears over the button. If the person misses more than 3 times the screen flashes red for a second before resetting the red Xs and the count starts over. There is also a reset button that will reset the counts and start over again and a exit button that will bring up a results page that has how many hits and misses and elapsed time. It should also create a small graph that shows the % correct over time.