Xamarin app automatically switching to dark mode on Android device with dark mode on

my Xamarin.Forms app (Shell project) keeps automatically switching to dark theme when on an Android phone with dark theme enabled. I don't want this to happen. I tried multiple ways to disable this, but none of them worked. Any idea what's wrong?

The interesting part of the code in AppShell.xaml is:

<?xml version="1.0" encoding="UTF-8"?>
<Shell xmlns="http://xamarin.com/schemas/2014/forms" 
       xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" 
       xmlns:retrogamez="clr-namespace:RetroGameZ"
       Title="RetroGameZ"
       x:Class="RetroGameZ.AppShell">
       

    <Shell.Resources>
        <ResourceDictionary>
            <Style x:Key="BaseStyle" TargetType="Element">
                <Setter Property="Shell.BackgroundColor" Value="#049DBF" />
                <Setter Property="Shell.ForegroundColor" Value="White" />
                <Setter Property="Shell.TitleColor" Value="White" />
                <Setter Property="Shell.DisabledColor" Value="#03A6A6" />
                <Setter Property="Shell.UnselectedColor" Value="#D3D3D3" />
                <Setter Property="Shell.TabBarBackgroundColor" Value="#049DBF" />
                <Setter Property="Shell.TabBarForegroundColor" Value="White"/>
                <Setter Property="Shell.TabBarUnselectedColor" Value="#D3D3D3"/>
                <Setter Property="Shell.TabBarTitleColor" Value="White"/>
            </Style>
            <Style TargetType="TabBar" BasedOn="{StaticResource BaseStyle}" />
            <Style TargetType="FlyoutItem" BasedOn="{StaticResource BaseStyle}" />
        </ResourceDictionary>
    </Shell.Resources>

later there are just indvidual components.

Found the solution for Android:

In MainActivity.cs, before base.OnCreate(), add this line:

AppCompatDelegate.DefaultNightMode = AppCompatDelegate.ModeNightNo;