Maui radio button border color not visible in dark mode?

Question

Trying to fix an issue I'm seeing on both Android & iOS in dark mode where the border of my radio button is not showing up. Once the button is pressed, the filled circle shows up for the checked selection, but I need both unchecked radio button circles to be there so the user knows the buttons are there. Anyone know how to get radio button formatting to work correctly in dark mode?

Here's the xaml for the buttons:

<RadioButton x:Name="MyRadio0No" Grid.Row="0" Grid.Column="1" Content="No" BackgroundColor="White" BorderColor="{StaticResource AppMainColor}" FontSize="Body" TextColor="{StaticResource AppMainColor}" IsChecked="false"  CheckedChanged="OnRadioButton0CheckedChanged" />
<RadioButton x:Name="MyRadio0Yes" Grid.Row="0" Grid.Column="2" Content="Yes" BackgroundColor="White" BorderColor="{StaticResource AppMainColor}" FontSize="Body" TextColor="{StaticResource AppMainColor}" IsChecked="false" HorizontalOptions="EndAndExpand" CheckedChanged="OnRadioButton0CheckedChanged"/>

Result in light mode:

Result in dark mode:

I've also tried setting the border color in Styles.xaml as well as specifying it for dark mode, but this didn't change anything:

<Style TargetType="RadioButton">
     <Setter Property="BorderColor" Value="{AppThemeBinding Light={StaticResource AppMainColor}, Dark={StaticResource AppMainColor}}" />
     ...
</Style>

@FreakyAli it works, they are just white brush drawn on white background :) — H.A.H.
– H.A.H., Commented Jul 8, 2024 at 3:31
@jess github.com/dotnet/maui/issues/15795 just notice the statement "low priority"... — H.A.H.
– H.A.H., Commented Jul 8, 2024 at 3:39

Kulashekar S · Accepted Answer · 2025-03-07 05:18:25Z

1

The BorderColor property for RadioButton in .NET MAUI does not work as expected due to platform inconsistencies. This is a known issue, and many developers have encountered it.

Workarounds to Fix the RadioButton
You want to customized control like Frame, Border or you can achive the default color in using Handlers, Renderers from native

answered Mar 7 at 5:18

Kulashekar S

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Comments

Jessie Zhang -MSFT · Accepted Answer · 2024-07-07 04:03:26Z

0

I did a test on my side, and I could reproduce this problem on my side. We should avoid using colors that are close to or the same as the background, otherwise we will run into problems just as you mentioned.

So, if I removed code BackgroundColor="White", and this problem will not recur in dark mode.

My test code is as follows:

<RadioButton x:Name="MyRadio0No" Content="No"  FontSize="Body" TextColor="Black" IsChecked="false"/>

answered Jul 7, 2024 at 4:03

Jessie Zhang -MSFT

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5 Comments

jess Over a year ago

Unfortunately, I need to specify the BackgroundColor otherwise it turns grey/black on some devices in dark mode and looks really bad. I want the background to be white and the radio button to be a dark color, so it should show up very clearly

Jessie Zhang -MSFT Over a year ago

You can specify the BackgroundColor, but BackgroundColor and the BorderColor color should not be similar, otherwise the problem you said will still appear.

jess Over a year ago

Well this is another Maui bug then because my BackgroundColor and BorderColor are very different

Jessie Zhang -MSFT Over a year ago

Could you please post the link of this Maui bug as you mentioned above?

jess Over a year ago

I don't have a link for you, see above for the screenshots/description of issue. I think it's a bug because implementing these properties isn't showing up correctly/at all in the UI

DUC VU NGUYEN · Accepted Answer · 2025-02-12 07:51:37Z

0

if (Current != null)
{
    Current.UserAppTheme = AppTheme.Light;
}

Note: In the Platforms/iOS/Info.plist file, add UIViewControllerBasedStatusBarAppearance key and value. key: UIViewControllerBasedStatusBarAppearance value: false

edited Feb 12 at 7:51

answered Oct 4, 2024 at 7:06

DUC VU NGUYEN

11 bronze badge

Comments

Kulashekar S · Accepted Answer · 2025-02-25 07:16:34Z

0

Check with Native Android Theme in Manifest - Use DayNight

answered Feb 25 at 7:16

Kulashekar S

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1 Comment

Community Mar 5 at 11:11

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