custom thumb on slider for android

src/Android/Controls/CustomSliderRenderer.cs

@@ -0,0 +1,27 @@
+using System;
+using Bit.Android.Controls;
+using Xamarin.Forms;
+using Android.Content;
+using Xamarin.Forms.Platform.Android;
+using Android.Support.V4.Content.Res;
+
+[assembly: ExportRenderer(typeof(Slider), typeof(CustomSliderRenderer))]
+namespace Bit.Android.Controls
+{
+    public class CustomSliderRenderer : SliderRenderer
+    {
+        public CustomSliderRenderer(Context context)
+            : base(context)
+        { }
+
+        protected override void OnElementChanged(ElementChangedEventArgs<Slider> e)
+        {
+            base.OnElementChanged(e);
+            if(Control != null)
+            {
+                var thumb = ResourcesCompat.GetDrawable(Resources, Resource.Drawable.slider_thumb, null);
+                Control.SetThumb(thumb);
+            }
+        }
+    }
+}