Search code examples
javaandroidcanvasdoublebuffered

Double buffering in Java on Android with canvas and surfaceview

How does one go about doing this? Could somebody give me an outline?

From what I've found online, it seems like in my run() function:

  1. create a bitmap
  2. create a canvas and attach it to the bitmap
  3. lockCanvas()
  4. call draw(canvas) and draw bitmap into back buffer (how??)
  5. unlockCanvasAndPost()

Is this correct? If so, could I get a bit of an explanation; what do these steps mean and how do I implement them? I've never programmed for Android before so I'm a real noob. And if it isn't correct, how DO I do this?

Solution

  • It's already double buffered, that's what the unlockCanvasAndPost() call does. There is no need to create a bitmap.