You could conceivably use a change in zoom level to drive the thinning of the poly lines, or other factors that help you determine the level of thinning. This is not trivial - you'll want to run the algorithm outside of your Overlay.draw() and probably not draw any lines until the algorithm has finished. Off the cuff, I figure you'll have to use AsyncTask for that, so there's not quick and dirty way (that I can see) if you want to get this right. In any case, you could study MyTracks to find out how they've solved this problem.
On Jul 1, 2:00 am, Felix Garcia Lainez <fgarcialai...@gmail.com> wrote: > Hi, > > So you are doing something similar to my draw method? > > I have just tested without alpha and anti-alising and it is faster, > but when there is big zoom level the mapactivity is closed (i think > this is due to memory usage) > > How should i profile this case? Really as i said there is not any > strange thing on the code... Simply a map with an overlay... > > Thanks! > > On 1 jul, 01:39, TreKing <treking...@gmail.com> wrote: > > > > > > > > > On Thu, Jun 30, 2011 at 5:47 PM, Felix Garcia Lainez < > > > fgarcialai...@gmail.com> wrote: > > > About the size with 300 or 400 GeoPoints i am already having problems... > > > The method isOnePointVisible is an optimization i did in order to try to > > > improve performance (seems to work fine). > > > So I have a very similar overlay to draw routes, with no optimization, and I > > just loaded 7 or 8 of them with no apparent slow down on my Nexus One. > > > Here are some thoughts: > > - What device are you running on? > > - Are you debugging or is this in release mode? > > - Do you need anti-aliasing? I think that might slow it down. > > - Do you need alpha? That would definitely slow down drawing. Set that to > > solid and see if if helps. > > > If none of that helps you're going to have to profile your code to get a > > clear picture of what's taking so long. > > > --------------------------------------------------------------------------- > > ---------------------- > > TreKing <http://sites.google.com/site/rezmobileapps/treking> - Chicago > > transit tracking app for Android-powered devices -- 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