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Question by JoanMM · Jan 09, 2019 at 03:41 PM · uibuttoncanvasoverlay

UI button on Canvas Space World not working on Android

I have a Scene with the following hierarchy:

 | ARCamera
 | EventSystem
 | ModelTarget
 -- | CanvasMenu
     --| BtnsGroup
        --| BtnInfo
        --| BtnShowHideCRC
 -- | CRC
     --| Cube
 -- | MockupInfo
     --| CanvasInfo
        --| TextGroup
           --| Text_Title
           --| Text_Description
     --| GroupButtons
        --| CanvasDynamic
           --| Text_Info_1
           --| BtnXpand

CanvasMenu and CanvasInfo are render mode Screen Space - Camera, while CanvasDynamic is World Space.

When the TargetModel is detected, what the program does is:

  • Automatically shows CanvasMenu and MockupInfo

  • When clicking on BtnShowHideCRC, CRC changes to enabled/disabled with a SetActive() command. In Start() this is set as disabled.

  • When clicking on BtnInfo, MockupInfo changes to enabled/disabled with a SetActive() command.

  • When clicking on BtnXpand, Text_Info_1 changes to enabled/disabled with a SetActive() command. In Start() this is set as disabled and only BtnXpand is shown, but not the text.

==> Everything works fine on my PC, but when I create the Android app and use it on my smartphone, the last point does not work: once the TargetObject is detected, everything in CanvasDynamic is directly shown. When clicking on BtnXpand, the button makes the efect that it has been clicked/tapped on, but nothing happens with Text_Info_1, it remains enabled.

I have tried many things, including changing from Screen Space - Overlay to Screen Space - Camera; moving everything from CanvasInfo to CanvasMenu, so I only have two Canvas, as well as adding some code related to IsPointerOverGameObject and IsPointerOverUIObject, as suggested here, but I did not manage to solve the problem.

Does anybody know what is wrong and how to solve it?

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