UI Image color not updating correctly

Hello, I'm using Unity UI Image to display a preview of my level.
I change it's color from script to change it's color alpha with two colors I have set in the inspector.
I have done this a lot and it's should be working.
The code is very easy :

Code (CSharp):

1. public Image Preview;
2. public Color ValidColor;
3. public Color InvalidColor;
4.  
5. ...
6.  
7.  
8. Preview.color = m_Playable ? ValidColor : InvalidColor;

Even if I change the color of the Image during run time through the inspector, nothing changes on the game view.

This bug happen only on this particular Image class, I've never seen that before.

 

Here is a screenshot of my image and it's color is set to red through the inspector but it does not change at all ...

 

Anyone can help me with this please ?

 

You're almost certainly hit by Unity issue 1143135: https://issuetracker.unity3d.com/is...d-via-script-when-image-type-is-set-to-simple

Simply waiting for a Unity version with the fix should help.

 

Hey thank you @motorious, this bug drove me crazy I searched a fix for hours.
Is there a way to have notification on bug tracker status update ?
Have a nice day

 

Thank you for this response - this behaviour suddently was broken in my game and I could not figure it out. I unfortunately do not have time for unity to figure out how to fix this, so instead I changed my Image Type to Filled (fill amount 1) instead of Simple and the problem was solved.

Thank you again!

 

The issue is fixed on Unity 2019.1.8

 

@Rafarel @LiveOrDevTrying

hey, I am using 2019.1.9f1 of unity still I am facing these issue.
basically I need to change the colors of the scoreboard in my scene, I can change colors for 1 scoreboard (which is basically is an image) but not for the other one, which is exactly the same as the previous.

btw both have the image type as sliced.

 

Version 2019.2.17f1 got issue same trying to change color on my pause panel it's not working.

 

Maybe this will help someone else in future. I wanted to change sprite color from code. found that using Color had no effect but Color32 worked great.
Hope this helps.

 

For me the solution was quite simple. The alpha was simply set to 0 for some reason. So change the alpha of the new color to 255.

 

I had the same problem.
In script the range color value is 0->1 and not 0->255.

 

Can confirm - this worked for me 2019.3.14f1.
Spent 2 hours trying to figure out what I do wrong.

Edit: yeah, only works once. If the color needs to be changed more than once, it doesn't work.

 

Thanks. Sounds obvious but I think I just naturally assumed that the Color property set via mono behavior would be the same default alpha value set by unity. I'm ashamed to admit I have spent way too much time on this lol

 

Like @A_Full said, This is what worked for me.

Code (CSharp):

1. private Color lowRed = new Color(255.0f / 255.0f, 117.0f / 255.0f, 117.0f / 255.0f);

 

Thanks! I just got hit with it in 2021.1.21f1. And this fixed it. Thanks for posting this fix. Was driving me crazy.

 

If you click on the colour picker in Editor, you can actually see that there is 3 options

1. Color32
2. Color
3. HSV

Which you can see the range of each type.

 

I tried everything mentioned here, and it still doesn't work. Any help would be appreciated

 

That fixed for me. Thank you!

 

Have you tried the color32 instead of color?

 

Anyone have a fix for this besides the Color32 thing? Doesn't seem to be working for me.

 

Fixed my problem! Thanks!

 

why is this still an issue and there are no solutions online lol

 

I have the same/similar problem. Trying to change the attributes of a menu button in a script attached to the button (see below). Nothing on the screen or in the inspector changes. Have tried suggestions above but they don't work for me either. Used debug to make sure I have the correct game object. Was able to enable/disable the button via code just not the attributes.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class Setup_Button : MonoBehaviour
{
private ColorBlock colorBlock;

void Awake()
{
colorBlock = gameObject.GetComponent<Button>().colors;
}
void Start()
{
colorBlock.normalColor = Color.cyan;
colorBlock.fadeDuration = 0.5f;
}
}

 

Found the answer. Need to reassign the color block back to the object.

private Button button;
private ColorBlock colorBlock;

void Start()
{
button = gameObject.GetComponent<Button>();
colorBlock = button.colors;
colorBlock.normalColor = Color.cyan;
colorBlock.fadeDuration = 0.5f;
button.colors = colorBlock;
}

 

The only SOLUTION. Thank you man!

 

I just stumbled accross the same issue.
In my case it was simply that the "colorpicker" automatically set the Alpha to "0" (why so ever).
So the Inspector showed me the colors changing, but nothing happend on the game view -> because Alpha was 0