SplashPage.xaml.cs

public partial class SplashPage : ContentPage
{
    IStartupTaskSequencer sequencer;

    public SplashPage()
    {
        InitializeComponent();
        sequencer = new StartupTaskBuilder()
                           .Add(new SimulateDownloadDataStartupTask())
                           .Add(new UpdateVersionStartupTask())
                           .Add(new OnboardingPage())
                           .Add(new PermissionRequestPage())
                           .Add(new LoginPage())
                           .Add(new AdvertisingPage())
                           .Add(new HomePage())
                           .Build();
    }

    protected override async void OnAppearing()
    {
        base.OnAppearing();
        await sequencer.StartAsync();
    }
}