Understanding the Canvas class

The Canvas class is part of the android.graphics package. If you look at the import statements at the top of the Sub' Hunter code you will see these lines of code.

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Point;
import android.view.Display;
import android.widget.ImageView;

First, let's talk about Bitmap, Canvas, and ImageView as highlighted in the previous code.

Getting started drawing with Bitmap, Canvas, and ImageView

As Android is designed to run on all types of mobile apps we can't immediately start typing our drawing code and expect it to work. We need to do a bit of preparation (coding) to get things working. It is true that some of this preparation can be slightly counterintuitive, but we will go through it a step at a time.

Canvas and Bitmap

Depending on how you use the Canvas class, the term can be slightly misleading. While the Canvas class is the...