带触发器的Onplatform

Question

我想使用Onplatform来为IOS和Android创建不同的触发器，但不知道如何或者如果可能。 在IOS上，我想使用不同的边距。

下面是代码：

<Grid> 
          <Grid.RowDefinitions> 
           <RowDefinition Height="Auto"></RowDefinition> 
           <RowDefinition Height="Auto"></RowDefinition> 
          </Grid.RowDefinitions> 
          <Grid.ColumnDefinitions> 
           <ColumnDefinition Width="Auto"></ColumnDefinition> 
          </Grid.ColumnDefinitions> 
          <!--left, top, right, bottom--> 
          <Label Text="{Binding article description}" 
             FontAttributes="Bold" FontSize="13" Margin="10,5,0,-6" Grid.Row="0" LineBreakMode="NoWrap"/> 

          <Label x:Name="Labeldishe" Text="{Binding dishe}" 
            FontSize="13" Margin="10,0,0,2" Grid.Row="1"/> 
          <Label Grid.Row="0" x:Name="Labelreserved" Text="{Binding reserved}" IsVisible="false" LineBreakMode="NoWrap"/> 
          <Image x:Name="ImageReserve" Grid.Row="0" Source="checkmark.png" WidthRequest="8" HeightRequest="8" HorizontalOptions="Start" IsVisible="False" > 
           <Image.Triggers> 
            <DataTrigger TargetType="Image" Binding="{Binding Source={x:Reference Labelreserved}, 
            Path=Text.Length}" Value="7"> 
             <Setter Property="IsVisible" Value="true" /> 
            </DataTrigger> 
            <DataTrigger TargetType="Image" Binding="{Binding article description}" Value="Meat"> 
             <Setter Property="Margin" Value="43,0,0,0" /> 
            </DataTrigger> 
            <DataTrigger TargetType="Image" Binding="{Binding article description}" Value="Option"> 
             <Setter Property="Margin" Value="46,0,0,0" /> 
            </DataTrigger> 
            <DataTrigger TargetType="Image" Binding="{Binding article description}" Value="Diet"> 
             <Setter Property="Margin" Value="40,0,0,0" /> 
            </DataTrigger> 
            <DataTrigger TargetType="Image" Binding="{Binding article description}" Value="Fish"> 
             <Setter Property="Margin" Value="42,0,0,0" /> 
            </DataTrigger> 
           </Image.Triggers> 
          </Image> 
         </Grid> 

Answer 1

我不能完全肯定，但如果是支持的，我认为它应该是这样的：

<DataTrigger TargetType="Image" Binding="{Binding article description}" Value="Carne"> 
    <Setter Property="Margin"> 
     <Setter.Value> 
      <OnPlatform x:TypeArguments="Thickness"> 
       <On Platform="iOS" Value="44,0,0,0" /> 
       <On Platform="Android" Value="43,0,0,0" /> 
      </OnPlatform> 
     </Setter.Value> 
    </Setter> 
</DataTrigger>