1 files changed, 81 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.Android/PlatformRenderer.cs b/Xamarin.Forms.Platform.Android/PlatformRenderer.cs
new file mode 100644
index 00000000..4fbc0293
--- /dev/null
+++ b/Xamarin.Forms.Platform.Android/PlatformRenderer.cs
@@ -0,0 +1,81 @@
+using System;
+using Android.App;
+using Android.Content;
+using Android.Views;
+using Android.Widget;
+
+namespace Xamarin.Forms.Platform.Android
+{
+	internal class PlatformRenderer : ViewGroup
+	{
+		readonly IPlatformLayout _canvas;
+		Point _downPosition;
+
+		DateTime _downTime;
+
+		public PlatformRenderer(Context context, IPlatformLayout canvas) : base(context)
+		{
+			_canvas = canvas;
+			Focusable = true;
+			FocusableInTouchMode = true;
+		}
+
+		public override bool DispatchTouchEvent(MotionEvent e)
+		{
+			if (e.Action == MotionEventActions.Down)
+			{
+				_downTime = DateTime.UtcNow;
+				_downPosition = new Point(e.RawX, e.RawY);
+			}
+
+			if (e.Action != MotionEventActions.Up)
+				return base.DispatchTouchEvent(e);
+
+			global::Android.Views.View currentView = ((Activity)Context).CurrentFocus;
+			bool result = base.DispatchTouchEvent(e);
+
+			do
+			{
+				if (!(currentView is EditText))
+					break;
+
+				global::Android.Views.View newCurrentView = ((Activity)Context).CurrentFocus;
+
+				if (currentView != newCurrentView)
+					break;
+
+				double distance = _downPosition.Distance(new Point(e.RawX, e.RawY));
+
+				if (distance > Context.ToPixels(20) || DateTime.UtcNow - _downTime > TimeSpan.FromMilliseconds(200))
+					break;
+
+				var location = new int[2];
+				currentView.GetLocationOnScreen(location);
+
+				float x = e.RawX + currentView.Left - location[0];
+				float y = e.RawY + currentView.Top - location[1];
+
+				var rect = new Rectangle(currentView.Left, currentView.Top, currentView.Width, currentView.Height);
+
+				if (rect.Contains(x, y))
+					break;
+
+				Context.HideKeyboard(currentView);
+				RequestFocus();
+			} while (false);
+
+			return result;
+		}
+
+		protected override void OnLayout(bool changed, int l, int t, int r, int b)
+		{
+			SetMeasuredDimension(r - l, b - t);
+			_canvas?.OnLayout(changed, l, t, r, b);
+		}
+
+		protected override void OnMeasure(int widthMeasureSpec, int heightMeasureSpec)
+		{
+			SetMeasuredDimension(MeasureSpec.GetSize(widthMeasureSpec), MeasureSpec.GetSize(heightMeasureSpec));
+		}
+	}
+}
+\ No newline at end of file