FrameRenderer

FrameRenderer.cs

using Android.Graphics;
using Xamarin.Forms;
using Xamarin.Forms.Platform.Android;
using ACanvas = Android.Graphics.Canvas;
using Color = Android.Graphics.Color;
 
[assembly: ExportRenderer(typeof(Frame), typeof(FrameBugPoc.Droid.FrameRenderer))]
namespace FrameBugPoc.Droid
{
 public class FrameRenderer : Xamarin.Forms.Platform.Android.FrameRenderer
  {
	public override void Draw(ACanvas canvas)
	{
		base.Draw(canvas);
		DrawOutline(canvas, canvas.Width, canvas.Height, 4f);//set corner radius
	}
	void DrawOutline(ACanvas canvas, int width, int height, float cornerRadius)
	{
		using (var paint = new Paint { AntiAlias = true })
		using (var path = new Path())
		using (Path.Direction direction = Path.Direction.Cw)
		using (Paint.Style style = Paint.Style.Stroke)
		using (var rect = new RectF(0, 0, width, height))
		{
			float rx = Forms.Context.ToPixels(cornerRadius);
			float ry = Forms.Context.ToPixels(cornerRadius);
			path.AddRoundRect(rect, rx, ry, direction);

			paint.StrokeWidth = 2f;  //set outline stroke
			paint.SetStyle(style);
			paint.Color = Color.ParseColor("#A7AE22");//set outline color //_frame.OutlineColor.ToAndroid(); 
			canvas.DrawPath(path, paint);
		}
	} 
   }
}