Xamarin.forms 在特定平台上添加TapGestureRecognitor

是否可以仅在UWP上添加

TapGestureRecognitor

？像这样的

<OnPlatform x:TypeArguments="GestureRecognizers">
    <OnPlatform.Platforms>
        <On Platform="UWP">
            <TapGestureRecognizer Command="{Binding MyUWPCommand}"/>
        </On>
    </OnPlatform.Platforms>
</OnPlatform>

---

为什么不在

MyUWPCommand

的代码中检查当前平台是否为UWP？如果是，则执行代码，如果不是，则不执行任何操作。

在XAML中：

<OnPlatform x:TypeArguments="Label">
    <On Platform="UWP">
        <Label Text="TapGestureRecognizer for UWP">
            <Label.GestureRecognizers>
                <TapGestureRecognizer Command="{Binding MyUWPCommand}" />
            </Label.GestureRecognizers>
        </Label>
    </On>
    <On Platform="Android, iOS">
        <Label Text="No GestureRecognizers for Android, iOS" />
    </On>
</OnPlatform>

---

只需将每个手势识别器包装到OnPlatform中即可

<ContentView.GestureRecognizers>
  <OnPlatform x:TypeArguments="GestureRecognizer">
    <OnPlatform.Platforms>
        <On Platform="UWP">
            <TapGestureRecognizer Command="{Binding MyUWPCommand}"/>
        </On>
    </OnPlatform.Platforms>
  </OnPlatform>
</ContentView.GestureRecognizers>

---

您必须在Xaml中执行此操作吗？