public App()
        {
            InitializeComponent();

            BottomBarPage bottomBarPage = new BottomBarPage();

            bottomBarPage.BarBackgroundColor = Color.Pink;


            // You can only define the color for the active icon if you set the Bottombar to fixed mode
            // So if you want to try this, just uncomment the next two lines

            //bottomBarPage.BarTextColor = Color.Blue; // Setting Color of selected Text and Icon
            //bottomBarPage.FixedMode = true;

            // Whith BarTheme you can select between light and dark theming when using FixedMode
            // When using DarkTheme you can set the Background Color by adding a colors.xml to you Android.Resources.Values
            // with content
            //
            //  <color name="white">#ffffff</color>
            //  < color name = "bb_darkBackgroundColor" >#000000</color>
            //
            // by setting "white" you can select the color of the non selected items and texts in dark theme
            // The Difference between DarkThemeWithAlpha and DarkThemeWithoutAlpha is that WithAlpha will draw not selected items with halfe the
            // intensity instaed of solid "white" value
            //
            // Uncomment next line to use Dark Theme
            // bottomBarPage.BarTheme = BottomBarPage.BarThemeTypes.DarkWithAlpha;

            string[]  tabTitles = { "Favorites", "Friends", "Nearby", "Recents", "Restaurants" };
            string [] tabColors = { null, "#5D4037", "#7B1FA2", "#FF5252", "#FF9800" };

            for (int i = 0; i < tabTitles.Length; ++i)
            {
                string title    = tabTitles [i];
                string tabColor = tabColors [i];

                FileImageSource icon = (FileImageSource)FileImageSource.FromFile(string.Format("ic_{0}.png", title.ToLowerInvariant()));

                // create tab page
                var tabPage = new TabPage()
                {
                    Title = title,
                    Icon  = icon
                };

                // set tab color
                if (tabColor != null)
                {
                    tabPage.SetTabColor(Color.FromHex(tabColor));
                }

                // set label based on title
                tabPage.UpdateLabel();

                // add tab pag to tab control
                bottomBarPage.Children.Add(tabPage);
            }

            MainPage = bottomBarPage;
        }