Xamarin.Forms字体系列无法在Android上运行

Question

我对这两件事都有疑问。我想要新的字体，但它根本不起作用。我将.ttf添加到Assets并且我已将构建操作更改为AndroidAsset

我的Xaml代码

<Label Text="My Challenges" TextColor="#000000" BackgroundColor="#80FFFFFF" FontSize="20" HorizontalTextAlignment="Center" VerticalTextAlignment="Center" x:Name="Lab">
  <Label.FontFamily>
   <OnPlatform x:TypeArguments="x:String">                
    <OnPlatform.Android>BLOODSUC.TTF#BLOODSUC</OnPlatform.Android>
</OnPlatform>
</Label.FontFamily>

<Label.Effects>
   <local:ShadowEffects Radius="10" DistanceX="5" DistanceY="5">
      <local:ShadowEffects.Color>
        <OnPlatform x:TypeArguments="Color">
           <On Platform="iOS" Value="Black" />
             <On Platform="Android" Value="#c4babb" />
               <On Platform="UWP" Value="Red" />
         </OnPlatform>
       </local:ShadowEffects.Color>
    </local:ShadowEffects>
  </Label.Effects>
</Label>