Adding a frames-per-second (fps) counter

We have updated the DrawThread to run at an arbitrary number of frames per second, adapting to the time required to render instead of a fixed 30 fps, and we are using sprites. Now is the perfect time to add a frames-per-second counter. It is a very easy tool and is also handy to check performance.

We could have used a TextView, but there are some good reasons to draw it on the Canvas directly instead:

The performance of SurfaceView suffers when we overlay other views on top of it
It is an interesting example of other methods of drawing on the Canvas
We can remove and add it without touching the layout

We will make a class named FPSCounter that extends from GameObject and looks like this:

public class FPSCounter extends GameObject {
  private final double mPixelFactor;
  private final float mTextWidth;
  private final float mTextHeight;

  private Paint mPaint;
  private long mTotalMillis;
  private int mDraws;
  private float mFps;

  private String mFpsText...

Tech Concepts

Programming languages

Tech Tools

Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.

Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.

50+ new titles added per month and exclusive early access to books as they are being written.

Mastering Android Game Development

By : Raul Portales

Mastering Android Game Development

By: Raul Portales

Overview of this book

Adding a frames-per-second (fps) counter

Mastering Android Game Development

By : Raul Portales

Mastering Android Game Development

By: Raul Portales

Overview of this book

Adding a frames-per-second (fps) counter

Confirmation

Buy this book with your credits?

Submit Your Feedback

Create a Free Account To Continue Reading

Sign in to activate your 7-day free access