As previously mentioned, the user interface is the means by which the user of an application interacts with the app. It cannot be overstated how important the user interface of an application is. Before embarking on the process of actually coding a user interface, it may be helpful to make a graphical representation of the UI to be implemented. This can be done with different tools, such as Photoshop, but for this case, a simple sketch is sufficient:
From the preceding sketch, we can see that we will need two distinct screens in this application: the landing screen and the game screen where the actual gameplay will happen. These two screens will require two separate activities. We'll call these two activities MainActivity and GameActivity.
MainActivity will serve as the entry point of our application. It will contain the user interface and all...