求助：.NET MAUI Android端Entry控件显示异常问题及临时解决方案

问题场景 #

使用VS Community 2022 Preview v17.3.0 Preview 4.0开发.NET MAUI应用，以下XAML代码在Windows模拟器运行完全正常，但连接Motorola moto g(7) power（Android 10.0 API29）本地设备时，第二个用于输入电话号码的Entry控件完全不显示——仅能看到“Phone:”标签，控件无法点击激活，甚至连设置的AliceBlue背景都不展示。

问题代码 #

<VerticalStackLayout Margin="20">

    <HorizontalStackLayout Margin="10">
        <Label Text="Name:"
               FontSize="Large"
               VerticalOptions="Center"
               WidthRequest="160"
               HorizontalOptions="End" />
        <Entry x:Name="MyStoreDetailsNameEntry"
               Text="{Binding Name, Mode=TwoWay}"
               BackgroundColor="AliceBlue"
               FontSize="Large"
               VerticalOptions="Center"
               HorizontalOptions="Start">
            <Entry.Behaviors>
                <toolkit:EventToCommandBehavior
                    x:DataType="viewmodels:StoreDetailsViewModel"
                    EventName="Completed"
                    Command="{Binding Path=BindingContext.StoreDetailsNameCompletedCommand,
                    Source={Reference myStoreDetailsPage}}"
                    CommandParameter="{Reference MyStoreDetailsNameEntry}"/>
            </Entry.Behaviors>
        </Entry>
    </HorizontalStackLayout>

    <HorizontalStackLayout Margin="10">
        <Label Text="Phone:"
               FontSize="Large"
                VerticalOptions="Center" 
                WidthRequest="160"
                HorizontalOptions="End" />
        <Entry x:Name="MyStoreDetailsPhoneEntry"
               Text="{Binding Phone, Mode=TwoWay}"
               BackgroundColor="AliceBlue"
               FontSize="Large"
               VerticalOptions="Center"
               HorizontalOptions="Start">
            <Entry.Behaviors>
                <toolkit:EventToCommandBehavior
                    x:DataType="viewmodels:StoreDetailsViewModel"
                    EventName="Completed"
                    Command="{Binding Path=BindingContext.StoreDetailsPhoneCompletedCommand,
                    Source={Reference myStoreDetailsPage}}"
                    CommandParameter="{Reference MyStoreDetailsPhoneEntry}"/>
            </Entry.Behaviors>
        </Entry>
    </HorizontalStackLayout>

</VerticalStackLayout>

临时解决方案（2022年8月12日更新） #

进入项目的Resources/Styles/Styles.xaml文件，找到TargetType为Entry的Style代码块，插入以下Setter配置：

<Setter Property = "MinimumWidthRequest" Value="50" />

修改后的完整Entry样式代码：

<Style TargetType="Entry">
    <Setter Property="TextColor" Value="{AppThemeBinding Light={StaticResource Black}, Dark={StaticResource White}}" />
    <Setter Property="BackgroundColor" Value="Transparent" />
    <Setter Property="FontFamily" Value="OpenSansRegular"/>
    <Setter Property="FontSize" Value="14" />
    <Setter Property="PlaceholderColor" Value="{AppThemeBinding Light={StaticResource Gray200}, Dark={StaticResource Gray500}}" />
    <Setter Property="MinimumWidthRequest" Value="50" />
    <Setter Property="VisualStateManager.VisualStateGroups">
        <VisualStateGroupList>
            <VisualStateGroup x:Name="CommonStates">
                <VisualState x:Name="Normal" />
                <VisualState x:Name="Disabled">
                    <VisualState.Setters>
                        <Setter Property="TextColor" Value="{AppThemeBinding Light={StaticResource Gray300}, Dark={StaticResource Gray600}}" />
                    </VisualState.Setters>
                </VisualState>
            </VisualStateGroup>
        </VisualStateGroupList>
    </Setter>
</Style>

此方案来自官方.NET Conf相关技术视频，仅作为临时解决手段使用，希望官方后续能彻底修复该适配问题。同时建议修改.NET MAUI应用的脚手架代码，在创建新项目时自动将MinimumWidthRequest的Setter配置添加到默认样式中，从源头避免开发者遇到此类问题。

内容的提问来源于stack exchange，提问作者T. A. Pfaff