Sending lifecycle method through MessagingCenter

App.cs

using LifeCycleProblem.Models;
using LifeCycleProblem.Views;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;

[assembly: XamlCompilation(XamlCompilationOptions.Compile)]

namespace LifeCycleProblem
{
    public partial class App : Application
    {
        public App()
        {
            InitializeComponent();

            MainPage = new MainPage();
        }

        protected override void OnStart()
        {
            MessagingCenter.Send(this, MessageNames.LifeCycle, CycleEventType.OnStart);
        }

        protected override void OnSleep()
        {
            MessagingCenter.Send(this, MessageNames.LifeCycle, CycleEventType.OnSleep);
        }

        protected override void OnResume()
        {
            MessagingCenter.Send(this, MessageNames.LifeCycle, CycleEventType.OnResume);
        }
    }
}