我面临一个奇怪的问题，我在StackLayout中有一个标签，它位于相对布局中，如下所示：

<RelativeLayout Margin="0,10,0,10">
    <localShapes:ShapeView WidthRequest="100" 
        HeightRequest="100" 
        Progress="100" 
        ShapeType="ProgressCircle" 
        Color="#f1f1f1" BorderColor="#d2d2d2" 
        ProgressBorderColor="#f1b035" 
        ProgressBorderWidth="12" 
        BorderWidth="12" 
        RelativeLayout.XConstraint="{ConstraintExpression Type=RelativeToParent,Property=Width, Factor=.5, Constant = -50}" />
    <StackLayout Spacing="0" 
        BackgroundColor="Gray" 
        Orientation="Vertical" 
        VerticalOptions="Center" 
        RelativeLayout.WidthConstraint="{ConstraintExpression Type=RelativeToParent,Property=Width, Factor=1, Constant = 0}" 
        RelativeLayout.HeightConstraint="{ConstraintExpression Type=RelativeToParent,Property=Height, Factor=1, Constant = 0}">
        <localControls:LocalizedLabel 
            BackgroundColor="Blue" 
            Text="{Binding UserScore}" 
            FontSize="16" 
            FontAttributes="Bold" 
            TextColor="#303030" 
            TextAlignment="Center" 
            VerticalOptions="Center" 
            HorizontalOptions="Center" />
        <localControls:LocalizedLabel 
            Text="{appResources:Translate Points}" 
            FontSize="9"
            TextColor="#303030" 
            TextAlignment="Center" 
            VerticalOptions="Center" 
            HorizontalOptions="Center" />
  </StackLayout>
</RelativeLayout>

所以当我输入硬编码值时，如下面的代码片段

<localControls:LocalizedLabel BackgroundColor="Blue" 
  Text="20" 
  FontSize="16" 
  FontAttributes="Bold" 
  TextColor="#303030" 
  TextAlignment="Center" 
  VerticalOptions="Center" 
  HorizontalOptions="Center" />

它在正确的位置显示标签 .

但是当我在我的ViewModel中将Label绑定到value时，就会显示出来

哪个不对 . 那么我该如何解决这个问题呢？

xamarin.forms relativelayout