How can I handle the Android system dark mode change?

[Daxter98]

Hello!

I've been trying to automatically handle the ThemeVariant when system dark mode is enabled or disabled. Currently, I can do this manually with a command and a button in the UI, but I would like this to happen automatically when the system dark mode changes. Is this possible?

I tried the following code in the OnFrameworkInitializationCompleted method in App.xaml.cs, but it only triggers the ColorValuesChanged event when the app starts up; it doesn't trigger when I manually toggle the dark mode settings.

var settings = Current?.PlatformSettings;
if (settings != null)
{
    settings.ColorValuesChanged += (sender, args) =>
    {
        Application.Current?.RequestedThemeVariant = (ThemeVariant)args.ThemeVariant;
    };
}

Thanks in advance!

[timunie]

I think ActualThemeVariant is the name if the property. If RequestedThemeVariant is default, it should mirror system settings. I don't know if we can watch it on all platforms yet