You have to handle persistence yourself. To do so, either draw your dots in a Bitmap or make sure to draw only the dots that will show on screen.
On Mon, Feb 16, 2009 at 12:04 PM, Greg <gregory.r.fie...@gmail.com> wrote: > > I've been searching around and can't seem to find a way to do this > properly. I am doing some tracking where I want to draw dots on a > map overlay recording previous positions. When onDraw of the overlay > is called it seems the canvas is cleared so I have to redraw all of > the history on every invocation. This could result in several > thousands of dots being draw over time which seems to not be very > efficient. > > Is there some flag somewhere that I have not found which tells a map > overlay to be persistent? Or is there some way I can save and restore > the canvas so I'm only maintaining/drawing the current point on each > onDraw? > > Thanks, > > Greg > > > -- Romain Guy Android framework engineer romain...@android.com Note: please don't send private questions to me, as I don't have time to provide private support. All such questions should be posted on public forums, where I and others can see and answer them --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
