The system delivers events as fast as you will process them. This is a common issue when a game is designed where most of the work is done outside of the main thread -- probably the best solution at this point to to sleep for some number of milliseconds each time you process an event to throttle the delivery rate. You could also bump up the priority of your game thread -slightly- to give it a bit of an edge over the main thread.
Oh and this is a touch screen. You are never not moving your finger, it is always moving slightly no matter how still you are. Add in pressure and size to x and y, and there is something always changing. On Fri, Jan 9, 2009 at 8:02 AM, Stoyan Damov <[email protected]> wrote: > > OK, I measured how many moves per sec the view gets when I hold my > finger as still as possible. > The result is surprising (I expected more and was hoping that's the > reason for the slow down) and is about 70 moves/second. > I still don't get why the view gets 70 moves/sec if I'm not moving my > finger at all :( > Can anyone shed some light on why touching the device's screen and > holding the finger on it will decrease the speed of my app as much as > *twice*? > > Thanks! > > On Fri, Jan 9, 2009 at 2:40 PM, Stoyan Damov <[email protected]> > wrote: > > Hi guys, > > > > I'm developing a touch-controlled game and have noticed that when I > > touch the screen and don't lift my finger off it the game's frame rate > > drops in *half*. > > My touch-related code does nothing but record the touch event, that > > is, setting a few members of an object. No locking, no nothing. > > > > I've noticed that a long time ago and wasn't very concerned because > > even with this unreasonable frame drop the game plays at > 25 fps and > > is still visually pleasing, but it doesn't look as good as when > > playing at full fps. > > I'm wondering if anyone knows (especially guys who have developed or > > are developing similar games) whether there's something I can do to > > make this performance problem go away. > > The only thing I've figured out so far is to disable the long press on > > the surface view (thinking that Android itself is making something > > funny if long press is requested) but it didn't make any difference. > > > > Thanks! > > Stoyan > > > > > > -- Dianne Hackborn Android framework engineer [email protected] 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 [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
