How to set a sliders value without the callback being triggered?

Since protected void Set(float input, bool sendCallback); is protected I need to find a way to init my sliders without the callback function to be called.
The callback function should be called when a user changes the slider value via UI usage, but not when I set the value via script.

Any hints on how I could do this?

 

Just manage a static flag somewhere which denotes the game is starting and don't perform the logic in your callback if it is true

 

Thanks for your reply. A flag is what I came down to as well. Feels somewhat like a workaround hack but is apparently still the cleanest way to do it. I'm initializing this slider not only at start but also during runtime. This is why it feels so dirty.

Oh and thanks for your signature as well. I'm going to check those UI Extensions out now.

 

Check out this post regarding using reflection to set the value of Toggle, Slider, Scrollbar and Dropdown without necessarily calling the callback: http://forum.unity3d.com/threads/ch...riggering-onvaluechanged.275056/#post-2348336

 

Yeah okay, I could do that, but then I would have to maintain those sources as well.
Is there a reason why it is protected? This function is handy for everyone. Is it planed to expose it in the future?
In the meantime you should remove the public entry for this function in the scripting reference. I was so happy when I found it there just to bite into my keyboard when I realized it was not actually public.

dreasgrech: Thanks for the link. Although I settled for a flag workaround for this time, this post is quite interesting since it's not just for my slider issue.

 

Thanks for the code.

On the issuetracker page you pointed me to is no option to create a feature request. It's just a list of bugs that can be browsed. (yes I'm logged in there)

And btw. yesterday I was checking out the new dropdown UI element and noticed there are also a whole bunch of function that are listed under public as well as under protected in the scripting reference. Seems the doc generator has a general problem there. All those function look like they where supposed to be public since they provide customization.

 

It's still not public! There must be a clean solution to set these elements to a given value without triggering an event.
I also came up with a dirty flag for that, since years. Just wondered if there is a cleaner solution than that, but there is still not.
Inheriting my own class from each and every unity class just to have some basic features is also far from a perfect solution. Why do you not make this thing public?

 

Code (CSharp):

1. slider.SetValueWithoutNotify(value)

 

Was this ever implemented? I just ran into a case where it would've been useful today (in 2019).

 

Its implemented as of Unity 2019

 

nice, thanks. i was debugging a problem that setting the slider value in the onclick callback was putting unity into an infinite loop and the only way to get out was kill it with the task manager.
slider.SetValueWithoutNotify(value) vs. slider.value = value works perfect

 

Actually, setting minValue and maxValue also triggers the callback

 

Unfortunately, using a flag to skip the extra callback is the only solution I see.

 

U can cache all listeners, remove from callback, set value, set listeners again.

 

This works in Unity 2020
toggle.SetIsOnWithoutNotify(value);
slider.SetValueWithoutNotify(value);