UMG animation opacity not work

Development Programming & Scripting UI
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1

Hi,
I have tested with UMG animation for Color and Opacity, and the Opacity isnt worked in ue4.17 at all.
Already created new project and try , but also not work too.
Anyone can give me some reason or solution?

2

Hello ,

I was unable to reproduce the issue you are experiencing. I have a couple questions to help narrow down the issue you are experiencing.

  1. You said that you could reproduce this issue in a new project, could you provide a detailed list of steps, so that I can reproduce this issue on our end?
  2. Can you provide screenshots or video of your issue?
  3. Where is the opacity option now working as intended in your project? In the UMG editor, or does the issue occur during play?

Thanks!

3

hi,
Thanks for reply, here are the steps to reproduce the issue:

  1. Create new FPS template.
  2. Right click on Content Browser and choose User Interface > Widget Blueprint.
  3. Double click on the BP, then create new Button, drag into Canvas Panel.
  4. Add new animation in Animation tab.
  5. Add new tracks in Timeline editor, then choose Button_0
  6. Click on + on Button_0 track, and choose Color and Opacity
  7. Try change opacity to 0 but nothing happen to the button, same as colors.

210903-ss.jpg
210903-ss.jpg1920×1023 201 KB

As you can see in the screenshot, i have put the value of Opacity to 0 but it didnt work . I have watched some tutorials on youtube and they have no problems with it.
Hope you can find solutions for this.
Thank you so much!

4

Thank you for submitting a bug report. I have reproduced this issue and logged a report for it here

You can track the report’s status as the issue is reviewed by our development staff. Please be aware that this issue may not be prioritized or fixed soon.

Cheers!

5

This is by design. If you hover of the Color and Opacity variable in the details panel, it states that it only applies to the content of the button and not the actual button itself. Should you want to change the opacity and color of the button, you would have to use the BackGround Color variable in the animation track. Hope this helps. Cheers,

1 Like
6

hi,
Sorry, i probably dont think so, because i saw in thise tutorial, he can do like what it should do.
Can you check at time 9:15?
Basic UMG UI Animation - #48 Unreal Engine 4 Beginner Tutorial Series - YouTube
Thank you

7

The tutorial you linked at 9:15 uses an Image widget and not a Button one (which appears to work fine in 4.17).

8

Thanks, ill do some test with it and let you know if it work or not.
Cheers

9

This is not working on a text box for me. Animation to take text box from 1 to 0 alpha over 2 seconds. Box is originally 0 alpha. When the conditions trigger box pops up at full alpha and just sits there at full alpha. Never fades out and never disappears.