mobile/src/App/Pages/HomePage.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;

namespace Bit.App.Pages
{
    public partial class HomePage : ContentPage
    {
        public HomePage()
        {
            InitializeComponent();
        }

        private void LogIn_Clicked(object sender, EventArgs e)
        {
            Navigation.PushModalAsync(new NavigationPage(new LoginPage()));
        }
    }
}