UI Builder Localization for dropdown & radio buttons

Unity Engine
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1

In the new UI Builder I am having an issue figuring out how to use localization with dropdown and radio buttons. I have setup localization tables for all the app text and images and that is working great. :tada:

I can’t figure out how to link up a localization table to the dropdown & radio button lists/values. Anyone have some insights on how to do that?

2

Hi,
The Dropdown and RadioButtonGroup use a List<string> field for their choices. You will need to bind to this field however we dont have a localized binding for List<string>.
You could create a custom binding to convert a localized value that uses comma separated values into a list and then apply that:

3

Thanks! I’ve added that and now this is working for radio buttons.

There’s only a small glitch on drop downs where the “select” area does not get updated immediately, it does after selection though.

image
image473Ă—269 5.41 KB

4

Thats probably worth a bug report. Changing the choices should trigger an update.
A workaround would be to try and manually force an update in the StringListBinding.Update method.
Something like

using System.Linq;
using UnityEngine;
using UnityEngine.Localization;
using UnityEngine.Localization.Settings;
using UnityEngine.UIElements;

[UxmlObject]
public partial class StringListBinding : LocalizedString
{
    protected override BindingResult Update(in BindingContext context)
    {
        if (IsEmpty)
            return new BindingResult(BindingStatus.Success);

        #if UNITY_EDITOR
        // When not in playmode and not previewing a language we want to show something, so we revert to the project locale.
        if (!Application.isPlaying && LocaleOverride == null && LocalizationSettings.SelectedLocale == null)
        {
            LocaleOverride = LocalizationSettings.ProjectLocale;
        }
        #endif

        if (!CurrentLoadingOperationHandle.IsDone)
            return new BindingResult(BindingStatus.Pending);

        var element = context.targetElement;

        var index = -1;
        if (element is DropdownField df)
        {
            index = df.index;
        }

        // Convert to a list
        var list = GetLocalizedString().Split(',').ToList();
        if (ConverterGroups.TrySetValueGlobal(ref element, context.bindingId, list, out var errorCode))
        {
            if (df != null)
                df.choices = list[index];

            return new BindingResult(BindingStatus.Success);
        }
        return new BindingResult(BindingStatus.Failure);
    }
}