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UMG Slider Not Responding To Touch Input

I have a slider in my HUD widget and it works fine with mouse input, however, if I launch in Mobile Preview or change the Input in Project Settings to interpret mouse events as touch events, the bar does not respond or update when it is clicked.

I have verified this by creating a completely blank project with nothing but a slider control in the HUD. If I set up the project as a Windows/Console project, the slider works properly. As soon as I change it to a Mobile/Tablet project or change the input settings to interpret mouse clicks as touch events, it does not change when clicked.

There is nothing bound to the value of the slider.

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Product Version: UE 4.9 Preview
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asked Aug 19 '15 at 07:56 PM in Blueprint Scripting

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BenRetan
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avatar image BenRetan Aug 19 '15 at 10:34 PM

Do I have to create a custom SSlider class that handles OnTouchBegin, OnTouchMove and OnTouchEnd? Regular buttons work fine without having to do any custom touch event handling.

avatar image NathanielS Aug 25 '15 at 09:26 PM

I actually have this same issue on the 4.9 r4 preview. For whatever reason, as soon as I turn off "enable mouse click for touch" the sliders begin to work just fine.

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This was resolved in 4.9.2

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answered Oct 08 '15 at 07:37 AM

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BenRetan
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avatar image GlenStevens Feb 16 '17 at 02:39 PM

Has this issue returned in 4.15? I noticed this issue today after updating and was able to reproduce the issue in the exact same way as described above.

avatar image GlenStevens Feb 16 '17 at 05:52 PM

Ok, the problem doesn't happen on device, it is only a side effect of using mouse to mimic touch interactions. I assume when you click and drag it begins simulating a touch and drag action, rather than simulating an HMD.

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