DemoCamara: MenuView.xaml

MenuView.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:d="http://xamarin.com/schemas/2014/forms/design"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:local="clr-namespace:DemoCamara.Views"
             Title="Menu"
             mc:Ignorable="d"
             x:Class="DemoCamara.Views.MenuView">
    <ContentPage.Content>
        <StackLayout HorizontalOptions="CenterAndExpand" VerticalOptions="CenterAndExpand">
            <Button Text="Pictures" 
                    Command="{Binding NavigateCommand}" 
                    CommandParameter="{x:Type local:PhotoView}" />
            
            <Button Text="Videos" 
                    Command="{Binding NavigateCommand}" 
                    CommandParameter="{x:Type local:VideoView}"/>
        </StackLayout>
    </ContentPage.Content>
</ContentPage>