ButtonWithBadge

MainPage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:local="clr-namespace:BadgeView"
             x:Class="BadgeView.MainPage">
    <ContentPage.Content>

            <StackLayout BackgroundColor="DarkGray"
                         HeightRequest="35"  VerticalOptions="Center">
                <StackLayout.GestureRecognizers>
                    <TapGestureRecognizer Tapped="AddNotification"/>
                </StackLayout.GestureRecognizers>
            <StackLayout Orientation="Horizontal" HorizontalOptions="Center" VerticalOptions="Center">
                        <Label HorizontalTextAlignment="Center" Text="Notifications" FontSize="18" TextColor="White"/>
                        <local:Badge x:Name="BadgeNotifications" BoxColor="red"
                                     WidthRequest="18" HeightRequest="18" 
                                     VerticalOptions="Center" HorizontalOptions="Center">
                            <x:Arguments>
                                <x:Double>30</x:Double>
                                <x:Double>10</x:Double>
                            </x:Arguments>
                        </local:Badge>
                    </StackLayout>
            </StackLayout>
    </ContentPage.Content>
</ContentPage>