Search Issue Tracker

Won't Fix



Found in


Issue ID




[Android] Input.touchCount and Input.GetTouch returns inconsistant results on Amazon devices



Steps to reproduce:
1. Open user attached project
2. Open and add "DemoSceneMultiDrag" to build
3. Build and run the project on an Android device
4. Start grabbing asteroids with up to 5 fingers
5. Move the 5 fingers around keeping the fingers stationary, moving fingers slowly close to each other
- Observe the touch circles flickering and sometimes disappearing entirely

Expected result: Touch circles should not flicker or disappear

Reproduced in: 2018.2.0a3, 2018.1.0b10, 2017.3.1p1, 2017.2.1p3, 2017.1.3p2, 5.6.5f1

Not reproduced with:
LG G3, Android 5,
Asus ZenPad C 7.0, Android 5,
Samsung Galaxy Note8, Android 7.1
Google Pixel 2, Android 8.1
Amazon Fire (5th gen), Android 5.1

Reproduced with:
Amazon Fire HD 8, Android 5.1
Amazon Kindle Fire HDX 8.9, Android 5.1

Unable to reproduce on iOS
iOS devices tested:
iPhone 7 iOS 11.0.2

  1. Response avatar

    Resolution Note:

    The problem is caused by the device. Sometimes AMOTION_EVENT_ACTION_POINTER_UP is sent for all finger IDs and even though the fingers are still touching the screen, no new motion events are received until all fingers are lifted up. We can't react to this in any way since we don't receive new events.
    Original bug report also showed flickering behavior if touches disappearing and reappearing, however with the latest Unity version that is not reproducible. Only sometimes all touches are lost and they don't reset until all fingers are lifted up.

Comments (1)

  1. 4c81cbfacd473a83f594c3b775bae363?d=mm


    Mar 10, 2018 20:09


Add comment

Log in to post comment

All about bugs

View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.