CarouselView.PagerIndicatorTabs.cs

void ItemsSourceChanged ()
{
    if (ItemsSource == null) return;
    CreateTabs();
}

void CreateTabs()
{
    if(Children != null && Children.Count > 0) Children.Clear();

    foreach(var item in ItemsSource)
    {
        var index = Children.Count;
        var tab = new StackLayout {
            Orientation = StackOrientation.Vertical,
            HorizontalOptions = LayoutOptions.Center,
            VerticalOptions = LayoutOptions.Center,
            Padding = new Thickness(7),
        };
        Device.OnPlatform(
            iOS: () =>
            {
                tab.Children.Add(new Image { Source = "pin.png", HeightRequest = 20 });
                tab.Children.Add(new Label { Text = "Tab " + (index + 1), FontSize = 11 });
            },					
            Android: () =>
            {
                tab.Children.Add(new Image { Source = "pin.png", HeightRequest = 25 });
            }
        );
        var tgr = new TapGestureRecognizer();
        tgr.Command = new Command(() =>
        {
            SelectedItem = ItemsSource[index];
        });
        tab.GestureRecognizers.Add(tgr);
        Children.Add(tab, index, 0);
    }
}