Android system font size effects app font size in maui app

Question

How to disable system font size scaling for maui app? android 33 version.

I tried to set configuration to default within MainActivity:

public override Android.Content.Res.Resources Resources
{
    get
    {
        Android.Content.Res.Configuration configuration = new Android.Content.Res.Configuration();
        configuration.SetToDefaults();

        DisplayMetrics metrics = new DisplayMetrics();

        if (Build.VERSION.SdkInt >= Android.OS.BuildVersionCodes.NMr1)
        {
            return CreateConfigurationContext(configuration).Resources;
        }
        else if (Build.VERSION.SdkInt >= Android.OS.BuildVersionCodes.Lollipop)
        {
            base.Resources.UpdateConfiguration(configuration, metrics);
            return base.Resources;
        }
        else
        {
            return base.Resources;
        }
    }
}

in debug it resets display metrics density to default, but once in a while i see scaled font as system one. Also try tried to set:

configuration.FontScale = (float)1;

but the same.

Try adapting one of the Xamarin answers. stackoverflow.com/questions/49649874/…, stackoverflow.com/questions/74363019/…, stackoverflow.com/questions/50289763/…. — ToolmakerSteve
– ToolmakerSteve, Commented May 9, 2023 at 1:12

Dhawal · Accepted Answer · 2023-12-05 20:34:27Z

5

You can simply use property

FontAutoScalingEnabled="False"

where in the label you want to.

answered Dec 5, 2023 at 20:34

Dhawal

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Comments

Guangyu Bai - MSFT · Accepted Answer · 2023-05-09 06:16:08Z

4

You can put the code below in the MainActivity.cs file. It can prevent to change the application font to match the system font.

 protected override void AttachBaseContext(Context @base)
     {
         Configuration configuration = new(@base.Resources.Configuration)
         {
             FontScale = 1.0f
         };
         ApplyOverrideConfiguration(configuration);
         base.AttachBaseContext(@base);
     }

answered May 9, 2023 at 6:16

Guangyu Bai - MSFT

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3 Comments

Yevhenii Yerokhin Over a year ago

thanks, it did the trick, but still need to set each ui element custom font size(dont use default or system fontSizes)

pikausp Over a year ago

This does not work with named font sizes, such as Medium. Is there a way to make it work with those as well?

Nutzs Over a year ago

How would we do something similar for iOS

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