Xamarin form 去除两控件间的间距

如图两控件之间有间距：

QQ截图20190724160707.png

想要效果：

QQ截图20190724161745.png

问题代码如下：

<StackLayout  Orientation="Vertical" BackgroundColor="LightSeaGreen" VerticalOptions="Center"  HorizontalOptions="Start" Padding="15" >
   <StackLayout.GestureRecognizers>
      <TapGestureRecognizer NumberOfTapsRequired="1" Tapped="Button_OnClicked_toSininorsignout"/>
   </StackLayout.GestureRecognizers>
   <Image Source="{local:ImageResource CameraFTP.Timelapse.Shared.images.login.png}" HeightRequest="20" WidthRequest="20" VerticalOptions="Center"  HorizontalOptions="Center" BackgroundColor="Black"></Image>
   <Label Text="{StaticResource Mainpage_logon}"  TextColor="{StaticResource textColorWhite}" FontSize="12"  VerticalOptions="Start"  HorizontalOptions="Center" BackgroundColor="Blue"></Label>
</StackLayout>

如图黑色和深蓝控件间有间距，怎么调都去不掉，搞了好久，改进代码如下，仅仅在第一行里加了Spacing="0"：

<StackLayout  Orientation="Vertical" BackgroundColor="LightSeaGreen" VerticalOptions="Center"  HorizontalOptions="Start" Padding="15"  Spacing="0">
   <StackLayout.GestureRecognizers>
      <TapGestureRecognizer NumberOfTapsRequired="1" Tapped="Button_OnClicked_toSininorsignout"/>
   </StackLayout.GestureRecognizers>
   <Image Source="{local:ImageResource CameraFTP.Timelapse.Shared.images.login.png}" HeightRequest="20" WidthRequest="20" VerticalOptions="Center"  HorizontalOptions="Center" BackgroundColor="Black"></Image>
   <Label Text="{StaticResource Mainpage_logon}"  TextColor="{StaticResource textColorWhite}" FontSize="12"  VerticalOptions="Start"  HorizontalOptions="Center" BackgroundColor="Blue"></Label>
</StackLayout>