Comments (4)
Another bug report from 김한결: 이 프로그램은 2점 터치를 했을
때 한 손가락을 떼면 그 외의 점도 같이 떨어지는 오류가
있습니다.
Effectively this translates to "If you lift one finger, both touch points come
up on Nexus S"
Original comment by luke.hutch
on 22 Apr 2012 at 4:54
- Added labels: ****
- Removed labels: ****
from android-multitouch-controller.
Another user report:
With 2 points, there are no pointer IDs; after lifting off one finger from
touch point 4 and then the other from 3, then putting down one finger again,
the single touch point has a ID.
Original comment by luke.hutch
on 22 Apr 2012 at 4:55
- Added labels: ****
- Removed labels: ****
from android-multitouch-controller.
Got another related report from Garnet:
I do have one quick question/observation. I only have a Nexus One to
test my multitouch. I am aware and understand a variety of issues
with that touchscreen. What I see happening however with both your
visualizer and my app is something I had not known about. When I have
two fingers down, your controller correctly reports two points. When
I remove the second point, I actually get two events, one reporting a
new numPoints = 0, and then a few milliseconds later the correct
numPoints = 1. Like this:
I/caJoystick(24296): *****************
I/caJoystick(24296): time: 1317005694145 <-------- this is where
I put the second finger down
I/caJoystick(24296): numpoints = 2
I/caJoystick(24296): joystickX = 90 joystickY = 146
I/caJoystick(24296): button0:128
I/caJoystick(24296): button1:0
I/caJoystick(24296): *****************
I/caJoystick(24296): time: 1317005696679
I/caJoystick(24296): numpoints = 0 <--------- this
is when I remove that second finger but still have the first one down
I/caJoystick(24296): joystickX = 127 joystickY = 127
I/caJoystick(24296): button0:0
I/caJoystick(24296): button1:0
I/caJoystick(24296): *****************
I/caJoystick(24296): time: 1317005696682
I/caJoystick(24296): numpoints = 1 <--------- and
then the correct value comes in 3 milliseconds later!
I/caJoystick(24296): joystickX = 87 joystickY = 143
I/caJoystick(24296): button0:0
I/caJoystick(24296): button1:0
I/caJoystick(24296): *****************
I can see that your multitouch visualizer from the market has the same
issue because removing the second finger from the screen causes the
text to appear on the display (as if no fingers were on the screen)
for an almost imperceptible time. Just a flash.
Can I assume that this is another neat feature of the nexus one or is
there any chance that there is a bug in your controller? I can use a
timer to suppress the spurious numpoints = 0 but that is rather
hackish. Thought I'd check with you first. I couldn't find any
reference to this specific nexus one issue on the net.
Original comment by luke.hutch
on 22 Apr 2012 at 4:58
- Added labels: ****
- Removed labels: ****
from android-multitouch-controller.
hi
same problem on a motorola xoom
When lifting a finger without moving the others, the API loses the touch points.
Example : point1 point2 point3 down
Lift point3 without moving the others fingers (you must be careful and precise
!)
Result: the 2 remaining points are lost, but they are displayed again if the
fingers are moved a little bit
Original comment by [email protected]
on 15 May 2012 at 7:49
- Added labels: ****
- Removed labels: ****
from android-multitouch-controller.
Related Issues (20)
- Investigate merging with Android's MT gesture detector
- Allow setting of individual fields in PointInfo
- [MTVisualizer]
- Merge in pbourke's code
- how to implement if the images are not in resources?(load image from server) HOT 3
- Add pinch-zoom/drag of entire canvas HOT 5
- Flip animation on individual photo. HOT 1
- Having an crash of app when initiated with a button click HOT 4
- Reuse position and scale information HOT 5
- Change the image in canvas is not work properly.
- Fix: Rotation relative to the midpoint of the two touches
- Responding to TextViews? HOT 1
- How To Support Multi touch Simultaneously for Several Users HOT 2
- Initializing multiTouchController HOT 2
- Cant change the image HOT 17
- [MTVisualizer] Lag when using ICS's Holo Theme HOT 1
- MTPhotoSortrDemo rotates around image center, not pinch center
- Two zero-distance points annihilate each other
- Req: Snap to allow rotate/resize, but not both
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from android-multitouch-controller.