In this chapter, we learned the ins and outs of variables, added all the variables we will need for the Sub' Hunter game and initialized many but not all of them. In addition, we captured the screen resolution using some slightly freaky object-oriented magic that will become clearer as we progress. The last thing we did was to output the value of all the variables to the logcat window each time the draw method is called. This might prove useful if we have bugs or problems as the project progresses.
We really need to dig a bit deeper into Java methods because once we do it opens a whole new world of possibilities because we can more easily use the methods of the classes of Android. We will then be able to make our own methods more advanced and flexible as well as use some powerful classes like Canvas to start drawing graphics to the screen. We will learn about methods in the next chapter and start doing some drawing in the chapter after that.