Splitted and added UWP project

GUT.Schedule/GUTSchedule.Droid/Extensions.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Android.Content;
+using Android.Widget;
+
+namespace GUTSchedule.Droid
+{
+	public static class Extensions
+	{
+		/// <summary>
+		/// Sets array as Spinner dropdown list content
+		/// </summary>
+		/// <typeparam name="T">Array items type</typeparam>
+		/// <param name="spinner">Spinner on which array will be assigned to</param>
+		/// <param name="context">Current activity context. In most common cases <c>this</c> will do</param>
+		/// <param name="array">Array of items to be displayed</param>
+		public static void SetList<T>(this Spinner spinner, Context context, IEnumerable<T> array)
+		{
+			ArrayAdapter adapter = new ArrayAdapter(context, Resource.Layout.support_simple_spinner_dropdown_item, array.ToList());
+			spinner.Adapter = adapter;
+		}
+
+		/// <summary>
+		/// Converts <see cref="DateTime"/> to milliseconds count
+		/// </summary>
+		/// <remarks>In the nearest future we will be fucked because of that shit</remarks>
+		/// <param name="dt"><see cref="DateTime"/> which is to be converted to UNIX time</param>
+		/// <returns><see cref="long"/> which is represented by total milliseconds count passed since 1970</returns>
+		public static long ToUnixTime(this DateTime dt) =>
+			(long)dt.ToUniversalTime().Subtract(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)).TotalMilliseconds;
+	}
+}