SwipeGestureRecognizer in a ListView

Hi,
I'm trying to use a SwipeGestureRecognizer in a ListView so that I can swipe a row, and execute an action on that row. Unfortunately I can't get it to work as I would like. I have the following ListView definition.

            <ListView x:Name="todoList"
                      IsPullToRefreshEnabled="true" 
                      Refreshing="OnRefresh" 
                      SeparatorVisibility="Default"
                      Grid.Row="1">
                <ListView.ItemTemplate>
                    <DataTemplate>
                        <ViewCell>
                            <ViewCell.ContextActions>
                                <MenuItem Clicked="OnComplete" Text="Complete" CommandParameter="{Binding .}"/>
                                <MenuItem Clicked="OnDelete" Text="Delete" IsDestructive="True" CommandParameter="{Binding .}" />
                            </ViewCell.ContextActions>
                            <StackLayout HorizontalOptions="StartAndExpand" Orientation="Horizontal" Padding="15,5,10,10">
                                    <Label Text="{Binding Name}">
                                        <Label.GestureRecognizers>
                                            <SwipeGestureRecognizer Direction="Left" Swiped="OnSwiped" CommandParameter="{Binding .}"/>
                                            <SwipeGestureRecognizer Direction="Right" Swiped="OnSwiped" CommandParameter="{Binding .}"/>
                                        </Label.GestureRecognizers>
                                    </Label>
                            </StackLayout>
                        </ViewCell>
                    </DataTemplate>
                </ListView.ItemTemplate>
            </ListView>

If I put the SwipeGestureRecognizer in the ListView i.e. just above ListView.ItemTemplate, it calls the OnSwipe method, but the SwipedEventArgs.Parameter is always null, so I can't determine which row was swiped. If I put the SwipeGestureRecognizer in the Label (as displayed) it calls OnSwipe, and the Parameter has the correct value, however, it only works if the actual label is swiped; if I swipe anywhere else in the row, OnSwipe doesn't get called. I've also tried putting it inside the StackLayout, but then OnSwipe isn't called at all. I would have thought it should go in the ViewCell, but that doesn't compile.

There is a (very old) Forum question about this, but it recommends using ContextActions, but they just seem to use MenuItems, not swipe gestures. Is there a way to swipe anywhere on a ListView row, and get it to call OnSwipe with the required values in SwipedEventArgs.Parameter (or is there an alternative to this).