Hello Team, I'm working on multi-touch within Android 2.2 I need to support following use cases: 1. Report Pen activities 2. Report Multi-touch activities
I prefer to have very clear documentation that describes Android protocol works, but not very short description that actually don't work well. I need to be able to manage ABS_MT_TRACKING_ID, since my track id changes a lot, because of support for complicated motions on sensor. The HW I'm working has very precise data about each finger. FOLLOWING ARE RESULTS OF MY TEST: For a Pen I found that in order to adjust Events with Android, I must to report Pen as single touch EV_ABS, ABS_PRESSURE EV_ABS, ABS_X EV_ABS, ABS_Y EV_KEY, BTN_TOUCH SYNCH_DATA If I use multi-touch queue, both BTN_TOUCH and ABS_PRESSURE ignored For Multi-Touch issue is much more complicated: There is simple protocol for that EV_ABS, ABS_MT_POSITION_X EV_ABS, ABS_MT_POSITION_Y EV_ABS, ABS_MT_TOUCH_MAJOR MT_SYNCH EV_ABS, ABS_MT_POSITION_X EV_ABS, ABS_MT_POSITION_Y EV_ABS, ABS_MT_TOUCH_MAJOR MT_SYNCH SYNCH_DATA The problem is that you need to add BTN_TOUCH info so what I do before sending ABS information I send EV_KEY, BTN_TOUCH, number of fingers EV_KEY, BTN_1 EV_KEY, BTN_2 .... In this case Android responds to events. -- 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
