perf: Specialized binding for BorderLayerRenderer.GetOverlayDrawable()

src/Uno.UI.BindingHelper.Android/Uno/UI/BorderLayerRendererNative.java

@@ -0,0 +1,29 @@
+package Uno.UI;
+
+import android.graphics.*;
+import android.graphics.drawable.*;
+import android.graphics.drawable.shapes.*;
+
+public final class BorderLayerRendererNative
+{
+	private static Paint.Style paintStyleFillStroke = Paint.Style.FILL_AND_STROKE;
+
+	private BorderLayerRendererNative() {
+	}
+
+	public static void buildBorderCornerRadius(
+		PaintDrawable drawable,
+		Path borderPath,
+		Paint strokePaint,
+		float width,
+		float height)
+	{
+		drawable.setShape(new PathShape(borderPath, width, height));
+
+		Paint paint = drawable.getPaint();
+		paint.setAlpha(strokePaint.getAlpha());
+		paint.setColor(strokePaint.getColor());
+		paint.setShader(strokePaint.getShader());
+		paint.setStyle(paintStyleFillStroke);
+	}
+}

src/Uno.UI/UI/Xaml/Controls/Border/BorderLayerRenderer.Android.cs

@@ -1,4 +1,4 @@
-#pragma warning disable 0618 // Used for compatibility with SetBackgroundDrawable and previous API Levels
+#pragma warning disable 0618 // Used for compatibility with SetBackgroundDrawable and previous API Levels
 
 using Android.Graphics;
 using Android.Graphics.Drawables;
@@ -336,13 +336,11 @@ private static Drawable GetOverlayDrawable(
 				if (borderPath != null)
 				{
 					borderPath.SetFillType(Path.FillType.EvenOdd);
+
 					var drawable = new PaintDrawable();
-					drawable.Shape = new PathShape(borderPath, viewSize.Width, viewSize.Height);
-					var paint = drawable.Paint;
-					paint.Color = strokePaint.Color;
-					paint.SetShader(strokePaint.Shader);
-					paint.SetStyle(Paint.Style.FillAndStroke);
-					paint.Alpha = strokePaint.Alpha;
+
+					BorderLayerRendererNative.BuildBorderCornerRadius(drawable, borderPath, strokePaint, viewSize.Width, viewSize.Height);
+
 					return drawable;
 				}
 				else if (!viewSize.IsEmpty)