Releasing one finger releases all fingers on multitouch

Unity Engine
,
1

Hello there, I am having some problems getting our game’s on-screen buttons to run properly.

I am

  • using Unity3d 4.2.1f4 and
  • testing on an HTC Evo 3d with Android 2.3.4

Touching the display with many fingers, and then releasing one seems to release all fingers. Anyone had a similar issue and knows any workaround?

This is what I get when I read out Input.touches on every update printing the ids:
http://youtu.be/Qy6cO9b6ssI

Many thanks,
Zsolt

2

It would make it easier if you could paste the touch checking code.

3

Sure, here we go.

void Update () {

string text=“”;
foreach (Touch touch in Input.touches) {
text += “[id:”+touch.fingerId+“]”;
}

m_GuiText.text = text;

}

4

Weirdly after trying the very same with the very same build this morning, the problem is gone. But magically vanished problems are not very reassuring. I obviously don’t want this to happen on my customer’s device.

Did anyone run into the same problem and has an idea who the culprit is?

5

As expected it’s back again. Seems to be quite a random issue. Anyone else had a problem like this?

6

Update …

Blimey, the culprit was the HTC EVO 3D

http://www.youtube.com/watch?v=8rz3uWFuDkI

In short: Appearently sometimes multitouch input becomes patchy. When you lock the phone and then unlock it again, the problem is gone. What a beautiful bug to spend your afternoon with …