FavFighters.xaml

<!-- Note the added Invoked attribute here -->
<SwipeItemView Invoked="SwipeItemView_Invoked">
    <Grid
        WidthRequest="120"
        BackgroundColor="{StaticResource BackgroundColor}">
        <BoxView
            Style="{StaticResource SwipeItemBorderStyle}"/>
        <Image
            Source="star.png"
            Style="{StaticResource SwipeItemIconStyle}"/>
        <Label                                         
            Text="Favourite"
            Style="{StaticResource SwipeItemTextStyle}"/>
    </Grid>
</SwipeItemView>