> In fact, there isn't really a "primary" pointer. Well, the documentation for ACTION_POINTER_DOWN says that this applies to "non-primary pointers", which implies that there really *is* a "primary" pointer.
So, I was just trying to explain why sometimes the pointers were generating ACTION_DOWN, and other times were generating ACTION_POINTER_DOWN, *in terms of whether the pointer is primary or not, since this is how it is currently documented.* But perhaps the easiest way to look at it is: If there's 1 finger touching the device, expect ACTION_DOWN, ACTION_MOVE, ACTION_UP events; but if there's 2 fingers touching the device, expect ACTION_POINTER_DOWN and ACTION_POINTER_UP events. (I'm assuming that there is never a situation where ACTION_UP and ACTION_POINTER_UP are *both* generated for a single "finger up" occurrence. Please let me know if that's wrong, because I've never actually tested this stuff, I'm just going by the limited Droid examples posted by Dave.) -- PJ On Nov 16, 8:30 pm, Dianne Hackborn <hack...@android.com> wrote: > On Sun, Nov 15, 2009 at 7:21 PM, niko20 <nikolatesl...@yahoo.com> wrote: > > > I wish though, that the multitouch would have also been natively > > suuportedk in the sense that multiple views should get touch events > > also simultaneously. > > Very, very deliberately not supported. :) You'll need to look at the events > arriving in a particular view and do what you want with them. It is too big > a can of worms to try to treat these as different event streams, because > they really aren't independent, and in many cases the view of the first > press really does want to see all of different finger touches during that > motion. > > Also the data you get from the screen is likely not going to be completely > independent with respect to multiple fingers -- for example on the > G1/Sapphire class screen there are interactions between the two points > reported, and if you play with Pointer Location on Droid you will see that > pressing a second finger can cause noticeable jitter in the first finger. > > -- > Dianne Hackborn > Android framework engineer > hack...@android.com > > Note: please don't send private questions to me, as I don't have time to > provide private support, and so won't reply to such e-mails. 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
