[iOS] RadioButton text related properties not working

[riccardominato]

Description

Some of the properties related to the text style of RadioButton seem to have no effects on iOS.

Those I'm aware of are:

• TextColor
• FontSize
• FontAttributes

Steps to Reproduce

1. Create a RadioButton
2. Try setting the properties listed above

For example

<RadioButton
    x:Name="BuggedRadioButton"
    TextColor="Red"
    FontSize="50"
    TextTransform="Uppercase"
    FontAttributes="Bold"
    Content="Hello, world!" />

Actual result

Expected result

Link to public reproduction project repository

https://github.com/Riccardo11/MauiIssues/tree/main/RadioButtonText

Version with bug

8.0.3

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

Unknown/Other

Affected platforms

iOS

Affected platform versions

No response

Did you find any workaround?

iOS supports using a View object for its Content property, so you can use a Label that will be styled.

#if IOS
BuggedRadioButton.Content = new Label
{
    Text = "Hello, world!",
    TextColor = Colors.Red,
    FontSize = 50,
    TextTransform = TextTransform.Uppercase,
    FontAttributes = FontAttributes.Bold
};
#endif

but doing this cause some warning logs stating that iOS doesn't support a View as Content, even though the documentation says the opposite.

Relevant log output

Microsoft.Maui.Controls.RadioButton: Warning: Warning - iOS does not support View as the Content property of RadioButton; the return value of the ToString() method will be displayed instead.
Microsoft.Maui.Controls.RadioButton: Warning: Warning - iOS does not support View as the Content property of RadioButton; the return value of the ToString() method will be displayed instead.
Microsoft.Maui.Controls.RadioButton: Warning: Warning - iOS does not support View as the Content property of RadioButton; the return value of the ToString() method will be displayed instead.
Microsoft.Maui.Controls.RadioButton: Warning: Warning - iOS does not support View as the Content property of RadioButton; the return value of the ToString() method will be displayed instead.
Microsoft.Maui.Controls.RadioButton: Warning: Warning - iOS does not support View as the Content property of RadioButton; the return value of the ToString() method will be displayed instead.
Microsoft.Maui.Controls.RadioButton: Warning: Warning - iOS does not support View as the Content property of RadioButton; the return value of the ToString() method will be displayed instead.
Microsoft.Maui.Controls.RadioButton: Warning: Warning - iOS does not support View as the Content property of RadioButton; the return value of the ToString() method will be displayed instead.

[mattleibow]

I recall that setting Content needs some additional style set to disable the OS controls.

@PureWeen thoughts?

We've added this issue to our backlog, and we will work to address it as time and resources allow. If you have any additional information or questions about this issue, please leave a comment. For additional info about issue management, please read our Triage Process.

[davidortinau]

Verified. I expect the styling to be applied and the results to be the same on all platforms. Note Android doesn't render the label at all. I think this is a known difference, but it should work nonetheless.

<RadioButton
    TextColor="Red"
    FontSize="30"
    TextTransform="Uppercase"
    FontAttributes="Bold"
    Content="Label for Content" />

<RadioButton>
    <RadioButton.Content>
        <Label Text="Label for Content" TextColor="Red"
        FontSize="30"
        TextTransform="Uppercase"
        FontAttributes="Bold"
         />
    </RadioButton.Content>
</RadioButton>

[kubaflo]

@davidortinau @mattleibow Maybe this PR will be helpful when it comes to fixing it :) #20366

[plppp2001]

<Label
FontAttributes="Bold" .... etc

This is not working on iOS for me (MAUI NET 8 Latest)