From 61f34d113c9f6941194a6ed3101f54158de722a3 Mon Sep 17 00:00:00 2001
From: Marcus Lum <marcusl@gmail.com>
Date: Tue, 30 Aug 2016 13:37:07 -0400
Subject: [PATCH] Allow Custom Android MapRenderers to override the default
 MapView options (#285)

* Allow Custom Android MapRenderers to override the default MapView options

* Larger effort to use CreateNativeControl () everywhere instead of just in the Android AppCompat renderers.
---
 .../CustomRenderers.cs                             | 23 ++++++++++++++++++----
 Xamarin.Forms.Maps.Android/MapRenderer.cs          | 13 ++++++++----
 .../AppCompat/ViewRenderer.cs                      |  1 -
 .../NativeViewWrapperRenderer.cs                   |  6 ++++++
 .../Renderers/ActivityIndicatorRenderer.cs         |  7 ++++++-
 .../Renderers/ButtonRenderer.cs                    |  7 ++++++-
 .../Renderers/DatePickerRenderer.cs                |  7 ++++++-
 .../Renderers/EditorRenderer.cs                    |  7 ++++++-
 .../Renderers/EntryRenderer.cs                     |  7 ++++++-
 .../Renderers/ImageRenderer.cs                     |  7 ++++++-
 .../Renderers/LabelRenderer.cs                     |  7 ++++++-
 .../Renderers/ListViewRenderer.cs                  |  7 ++++++-
 .../Renderers/NavigationMenuRenderer.cs            |  7 ++++++-
 .../Renderers/OpenGLViewRenderer.cs                |  7 ++++++-
 .../Renderers/PickerRenderer.cs                    |  7 ++++++-
 .../Renderers/ProgressBarRenderer.cs               |  7 ++++++-
 .../Renderers/SearchBarRenderer.cs                 |  8 +++++++-
 .../Renderers/SliderRenderer.cs                    |  7 ++++++-
 .../Renderers/StepperRenderer.cs                   |  7 ++++++-
 .../Renderers/SwitchRenderer.cs                    |  7 ++++++-
 .../Renderers/TableViewRenderer.cs                 |  7 ++++++-
 .../Renderers/TimePickerRenderer.cs                |  7 ++++++-
 .../Renderers/WebViewRenderer.cs                   |  7 ++++++-
 Xamarin.Forms.Platform.Android/ViewRenderer.cs     |  2 ++
 24 files changed, 151 insertions(+), 28 deletions(-)

diff --git a/Xamarin.Forms.ControlGallery.Android/CustomRenderers.cs b/Xamarin.Forms.ControlGallery.Android/CustomRenderers.cs
index 1faa7a9..7f86a85 100644
--- a/Xamarin.Forms.ControlGallery.Android/CustomRenderers.cs
+++ b/Xamarin.Forms.ControlGallery.Android/CustomRenderers.cs
@@ -97,13 +97,18 @@ namespace Xamarin.Forms.ControlGallery.Android
 		{
 		}
 
+		protected override global::Android.Widget.ListView CreateNativeControl()
+		{
+			return new global::Android.Widget.ListView(Forms.Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<NativeListView> e)
 		{
 			base.OnElementChanged(e);
 
 			if (Control == null)
 			{
-				SetNativeControl(new global::Android.Widget.ListView(Forms.Context));
+				SetNativeControl(CreateNativeControl());
 			}
 
 			if (e.OldElement != null)
@@ -266,13 +271,18 @@ namespace Xamarin.Forms.ControlGallery.Android
 		{
 		}
 
+		protected override global::Android.Widget.ListView CreateNativeControl()
+		{
+			return new global::Android.Widget.ListView(Forms.Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<NativeListView2> e)
 		{
 			base.OnElementChanged(e);
 
 			if (Control == null)
 			{
-				SetNativeControl(new global::Android.Widget.ListView(Forms.Context));
+				SetNativeControl(CreateNativeControl());
 			}
 
 			if (e.OldElement != null)
@@ -406,7 +416,7 @@ namespace Xamarin.Forms.ControlGallery.Android
 			return view;
 		}
 	}
-	public class CustomContentRenderer : ViewRenderer
+	public abstract class CustomContentRenderer : ViewRenderer
 	{
 	}
 
@@ -435,11 +445,16 @@ namespace Xamarin.Forms.ControlGallery.Android
 
 	public class CustomButtonRenderer : ButtonRenderer
 	{
+		protected override AButton CreateNativeControl()
+		{
+			return new CustomNativeButton(Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<Button> e)
 		{
 			if (Control == null)
 			{
-				CustomNativeButton b = new CustomNativeButton(Context);
+				CustomNativeButton b = (CustomNativeButton)CreateNativeControl();
 				SetNativeControl(b);
 			}
 
diff --git a/Xamarin.Forms.Maps.Android/MapRenderer.cs b/Xamarin.Forms.Maps.Android/MapRenderer.cs
index a0a3bbc..29270c0 100644
--- a/Xamarin.Forms.Maps.Android/MapRenderer.cs
+++ b/Xamarin.Forms.Maps.Android/MapRenderer.cs
@@ -15,7 +15,7 @@ using System.Collections;
 
 namespace Xamarin.Forms.Maps.Android
 {
-	public class MapRenderer : ViewRenderer, 
+	public class MapRenderer : ViewRenderer<Map,MapView>, 
 		GoogleMap.IOnCameraChangeListener 
 	{
 		public MapRenderer ()
@@ -41,19 +41,24 @@ namespace Xamarin.Forms.Maps.Android
 			return new SizeRequest (new Size (Context.ToPixels (40), Context.ToPixels (40)));
 		}
 
-		protected override void OnElementChanged (ElementChangedEventArgs<View> e)
+		protected override MapView CreateNativeControl()
+		{
+			return new MapView(Context);
+		}
+
+		protected override void OnElementChanged (ElementChangedEventArgs<Map> e)
 		{
 			base.OnElementChanged (e);
 
 			var oldMapView = (MapView)Control;
 
-			var mapView = new MapView (Context);
+			var mapView = CreateNativeControl();
 			mapView.OnCreate (s_bundle);
 			mapView.OnResume ();
 			SetNativeControl (mapView);
 
 			if (e.OldElement != null) {
-				var oldMapModel = (Map) e.OldElement;
+				var oldMapModel = e.OldElement;
 				((ObservableCollection<Pin>)oldMapModel.Pins).CollectionChanged -= OnCollectionChanged;
 
 				MessagingCenter.Unsubscribe<Map, MapSpan> (this, MoveMessageName);
diff --git a/Xamarin.Forms.Platform.Android/AppCompat/ViewRenderer.cs b/Xamarin.Forms.Platform.Android/AppCompat/ViewRenderer.cs
index 3c86921..85ff398 100644
--- a/Xamarin.Forms.Platform.Android/AppCompat/ViewRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/AppCompat/ViewRenderer.cs
@@ -2,6 +2,5 @@ namespace Xamarin.Forms.Platform.Android.AppCompat
 {
 	public abstract class ViewRenderer<TView, TControl> : Android.ViewRenderer<TView, TControl> where TView : View where TControl : global::Android.Views.View
 	{
-		protected abstract TControl CreateNativeControl();
 	}
 }
\ No newline at end of file
diff --git a/Xamarin.Forms.Platform.Android/NativeViewWrapperRenderer.cs b/Xamarin.Forms.Platform.Android/NativeViewWrapperRenderer.cs
index 2036e4b..d2f2397 100644
--- a/Xamarin.Forms.Platform.Android/NativeViewWrapperRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/NativeViewWrapperRenderer.cs
@@ -17,6 +17,12 @@ namespace Xamarin.Forms.Platform.Android
 			return result ?? base.GetDesiredSize(widthConstraint, heightConstraint);
 		}
 
+		// not called by the view wrapper renderer
+		protected override global::Android.Views.View CreateNativeControl()
+		{
+			return new global::Android.Views.View(Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<NativeViewWrapper> e)
 		{
 			base.OnElementChanged(e);
diff --git a/Xamarin.Forms.Platform.Android/Renderers/ActivityIndicatorRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/ActivityIndicatorRenderer.cs
index 696e6f6..f536b47 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/ActivityIndicatorRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/ActivityIndicatorRenderer.cs
@@ -13,6 +13,11 @@ namespace Xamarin.Forms.Platform.Android
 			AutoPackage = false;
 		}
 
+		protected override AProgressBar CreateNativeControl()
+		{
+			return new AProgressBar(Context) { Indeterminate = true };
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<ActivityIndicator> e)
 		{
 			base.OnElementChanged(e);
@@ -20,7 +25,7 @@ namespace Xamarin.Forms.Platform.Android
 			AProgressBar progressBar = Control;
 			if (progressBar == null)
 			{
-				progressBar = new AProgressBar(Context) { Indeterminate = true };
+				progressBar = CreateNativeControl();
 				SetNativeControl(progressBar);
 			}
 
diff --git a/Xamarin.Forms.Platform.Android/Renderers/ButtonRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/ButtonRenderer.cs
index 5de429a..4f384b3 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/ButtonRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/ButtonRenderer.cs
@@ -80,6 +80,11 @@ namespace Xamarin.Forms.Platform.Android
 			base.Dispose(disposing);
 		}
 
+		protected override AButton CreateNativeControl()
+		{
+			return new AButton(Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<Button> e)
 		{
 			base.OnElementChanged(e);
@@ -89,7 +94,7 @@ namespace Xamarin.Forms.Platform.Android
 				AButton button = Control;
 				if (button == null)
 				{
-					button = new AButton(Context);
+					button = CreateNativeControl();
 					button.SetOnClickListener(ButtonClickListener.Instance.Value);
 					button.Tag = this;
 					SetNativeControl(button);
diff --git a/Xamarin.Forms.Platform.Android/Renderers/DatePickerRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/DatePickerRenderer.cs
index 73e5183..96028c3 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/DatePickerRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/DatePickerRenderer.cs
@@ -42,13 +42,18 @@ namespace Xamarin.Forms.Platform.Android
 			base.Dispose(disposing);
 		}
 
+		protected override EditText CreateNativeControl()
+		{
+			return new EditText(Context) { Focusable = false, Clickable = true, Tag = this };
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<DatePicker> e)
 		{
 			base.OnElementChanged(e);
 
 			if (e.OldElement == null)
 			{
-				var textField = new EditText(Context) { Focusable = false, Clickable = true, Tag = this };
+				var textField = CreateNativeControl();
 
 				textField.SetOnClickListener(TextFieldClickHandler.Instance);
 				SetNativeControl(textField);
diff --git a/Xamarin.Forms.Platform.Android/Renderers/EditorRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/EditorRenderer.cs
index 14078ab..c9b596b 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/EditorRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/EditorRenderer.cs
@@ -33,6 +33,11 @@ namespace Xamarin.Forms.Platform.Android
 				((IElementController)Element).SetValueFromRenderer(Editor.TextProperty, s.ToString());
 		}
 
+		protected override EditorEditText CreateNativeControl()
+		{
+			return new EditorEditText(Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<Editor> e)
 		{
 			base.OnElementChanged(e);
@@ -42,7 +47,7 @@ namespace Xamarin.Forms.Platform.Android
 			EditorEditText edit = Control;
 			if (edit == null)
 			{
-				edit = new EditorEditText(Context);
+				edit = CreateNativeControl();
 
 				SetNativeControl(edit);
 				edit.AddTextChangedListener(this);
diff --git a/Xamarin.Forms.Platform.Android/Renderers/EntryRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/EntryRenderer.cs
index c1b0b5e..c1c24a8 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/EntryRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/EntryRenderer.cs
@@ -49,6 +49,11 @@ namespace Xamarin.Forms.Platform.Android
 			((IElementController)Element).SetValueFromRenderer(Entry.TextProperty, s.ToString());
 		}
 
+		protected override EntryEditText CreateNativeControl()
+		{
+			return new EntryEditText(Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<Entry> e)
 		{
 			base.OnElementChanged(e);
@@ -57,7 +62,7 @@ namespace Xamarin.Forms.Platform.Android
 
 			if (e.OldElement == null)
 			{
-				_textView = new EntryEditText(Context);
+				_textView = CreateNativeControl();
 				_textView.ImeOptions = ImeAction.Done;
 				_textView.AddTextChangedListener(this);
 				_textView.SetOnEditorActionListener(this);
diff --git a/Xamarin.Forms.Platform.Android/Renderers/ImageRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/ImageRenderer.cs
index 1f8a776..e3c6829 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/ImageRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/ImageRenderer.cs
@@ -28,13 +28,18 @@ namespace Xamarin.Forms.Platform.Android
 			base.Dispose(disposing);
 		}
 
+		protected override AImageView CreateNativeControl()
+		{
+			return new FormsImageView(Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<Image> e)
 		{
 			base.OnElementChanged(e);
 
 			if (e.OldElement == null)
 			{
-				var view = new FormsImageView(Context);
+				var view = CreateNativeControl();
 				SetNativeControl(view);
 			}
 
diff --git a/Xamarin.Forms.Platform.Android/Renderers/LabelRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/LabelRenderer.cs
index 0be9740..c544a23 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/LabelRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/LabelRenderer.cs
@@ -67,12 +67,17 @@ namespace Xamarin.Forms.Platform.Android
 			return result;
 		}
 
+		protected override TextView CreateNativeControl()
+		{
+			return new FormsTextView(Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<Label> e)
 		{
 			base.OnElementChanged(e);
 			if (_view == null)
 			{
-				_view = new FormsTextView(Context);
+				_view = (FormsTextView)CreateNativeControl();
 				_labelTextColorDefault = _view.TextColors;
 				SetNativeControl(_view);
 			}
diff --git a/Xamarin.Forms.Platform.Android/Renderers/ListViewRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/ListViewRenderer.cs
index f835192..1054e1e 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/ListViewRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/ListViewRenderer.cs
@@ -95,6 +95,11 @@ namespace Xamarin.Forms.Platform.Android
 			_adapter.IsAttachedToWindow = _isAttached;
 		}
 
+		protected override AListView CreateNativeControl()
+		{
+			return new AListView(Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<ListView> e)
 		{
 			base.OnElementChanged(e);
@@ -116,7 +121,7 @@ namespace Xamarin.Forms.Platform.Android
 				if (nativeListView == null)
 				{
 					var ctx = Context;
-					nativeListView = new AListView(ctx);
+					nativeListView = CreateNativeControl();
 					_refresh = new SwipeRefreshLayout(ctx);
 					_refresh.SetOnRefreshListener(this);
 					_refresh.AddView(nativeListView, LayoutParams.MatchParent);
diff --git a/Xamarin.Forms.Platform.Android/Renderers/NavigationMenuRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/NavigationMenuRenderer.cs
index 92a6511..c7e45ad 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/NavigationMenuRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/NavigationMenuRenderer.cs
@@ -26,13 +26,18 @@ namespace Xamarin.Forms.Platform.Android
 			get { return Element as NavigationMenu; }
 		}
 
+		protected override AView CreateNativeControl()
+		{
+			return new GridView(Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<View> e)
 		{
 			base.OnElementChanged(e);
 
 			if (e.OldElement == null)
 			{
-				var grid = new GridView(Context);
+				var grid = (GridView)CreateNativeControl();
 				grid.SetVerticalSpacing(20);
 
 				SetNativeControl(grid);
diff --git a/Xamarin.Forms.Platform.Android/Renderers/OpenGLViewRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/OpenGLViewRenderer.cs
index 0bddfb5..a97a208 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/OpenGLViewRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/OpenGLViewRenderer.cs
@@ -28,6 +28,11 @@ namespace Xamarin.Forms.Platform.Android
 			base.Dispose(disposing);
 		}
 
+		protected override GLSurfaceView CreateNativeControl()
+		{
+			return new GLSurfaceView(Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<OpenGLView> e)
 		{
 			base.OnElementChanged(e);
@@ -40,7 +45,7 @@ namespace Xamarin.Forms.Platform.Android
 				GLSurfaceView surfaceView = Control;
 				if (surfaceView == null)
 				{
-					surfaceView = new GLSurfaceView(Context);
+					surfaceView = CreateNativeControl();
 					surfaceView.SetEGLContextClientVersion(2);
 					SetNativeControl(surfaceView);
 				}
diff --git a/Xamarin.Forms.Platform.Android/Renderers/PickerRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/PickerRenderer.cs
index f2abe9d..b6d8171 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/PickerRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/PickerRenderer.cs
@@ -36,6 +36,11 @@ namespace Xamarin.Forms.Platform.Android
 			base.Dispose(disposing);
 		}
 
+		protected override EditText CreateNativeControl()
+		{
+			return new EditText(Context) { Focusable = false, Clickable = true, Tag = this };
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<Picker> e)
 		{
 			if (e.OldElement != null)
@@ -46,7 +51,7 @@ namespace Xamarin.Forms.Platform.Android
 				((ObservableList<string>)e.NewElement.Items).CollectionChanged += RowsCollectionChanged;
 				if (Control == null)
 				{
-					var textField = new EditText(Context) { Focusable = false, Clickable = true, Tag = this };
+					var textField = CreateNativeControl();
 					textField.SetOnClickListener(PickerListener.Instance);
 					_textColorSwitcher = new TextColorSwitcher(textField.TextColors);
 					SetNativeControl(textField);
diff --git a/Xamarin.Forms.Platform.Android/Renderers/ProgressBarRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/ProgressBarRenderer.cs
index 865732f..63316a2 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/ProgressBarRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/ProgressBarRenderer.cs
@@ -10,13 +10,18 @@ namespace Xamarin.Forms.Platform.Android
 			AutoPackage = false;
 		}
 
+		protected override AProgressBar CreateNativeControl()
+		{
+			return new AProgressBar(Context, null, global::Android.Resource.Attribute.ProgressBarStyleHorizontal) { Indeterminate = false, Max = 10000 };
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<ProgressBar> e)
 		{
 			base.OnElementChanged(e);
 
 			if (e.OldElement == null)
 			{
-				var progressBar = new AProgressBar(Context, null, global::Android.Resource.Attribute.ProgressBarStyleHorizontal) { Indeterminate = false, Max = 10000 };
+				var progressBar = CreateNativeControl();
 
 				SetNativeControl(progressBar);
 			}
diff --git a/Xamarin.Forms.Platform.Android/Renderers/SearchBarRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/SearchBarRenderer.cs
index 5e49895..468710c 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/SearchBarRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/SearchBarRenderer.cs
@@ -1,3 +1,4 @@
+using System;
 using System.ComponentModel;
 using System.Linq;
 using Android.Content.Res;
@@ -36,6 +37,11 @@ namespace Xamarin.Forms.Platform.Android
 			return true;
 		}
 
+		protected override SearchView CreateNativeControl()
+		{
+			return new SearchView(Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<SearchBar> e)
 		{
 			base.OnElementChanged(e);
@@ -46,7 +52,7 @@ namespace Xamarin.Forms.Platform.Android
 
 			if (searchView == null)
 			{
-				searchView = new SearchView(Context);
+				searchView = CreateNativeControl();
 				searchView.SetIconifiedByDefault(false);
 				searchView.Iconified = false;
 				SetNativeControl(searchView);
diff --git a/Xamarin.Forms.Platform.Android/Renderers/SliderRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/SliderRenderer.cs
index dbe1887..5df5bf3 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/SliderRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/SliderRenderer.cs
@@ -34,13 +34,18 @@ namespace Xamarin.Forms.Platform.Android
 		{
 		}
 
+		protected override SeekBar CreateNativeControl()
+		{
+			return new FormsSeekBar(Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<Slider> e)
 		{
 			base.OnElementChanged(e);
 
 			if (e.OldElement == null)
 			{
-				var seekBar = new FormsSeekBar(Context);
+				var seekBar = CreateNativeControl();
 				SetNativeControl(seekBar);
 
 				seekBar.Max = 1000;
diff --git a/Xamarin.Forms.Platform.Android/Renderers/StepperRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/StepperRenderer.cs
index 70eed60..88b5fd7 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/StepperRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/StepperRenderer.cs
@@ -16,6 +16,11 @@ namespace Xamarin.Forms.Platform.Android
 			AutoPackage = false;
 		}
 
+		protected override LinearLayout CreateNativeControl()
+		{
+			return new LinearLayout(Context) { Orientation = Orientation.Horizontal };
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<Stepper> e)
 		{
 			base.OnElementChanged(e);
@@ -31,7 +36,7 @@ namespace Xamarin.Forms.Platform.Android
 				_upButton.SetOnClickListener(StepperListener.Instance);
 				_upButton.SetHeight((int)Context.ToPixels(10.0));
 
-				var layout = new LinearLayout(Context) { Orientation = Orientation.Horizontal };
+				var layout = CreateNativeControl();
 
 				layout.AddView(_downButton);
 				layout.AddView(_upButton);
diff --git a/Xamarin.Forms.Platform.Android/Renderers/SwitchRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/SwitchRenderer.cs
index 39916b5..2c0b014 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/SwitchRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/SwitchRenderer.cs
@@ -47,6 +47,11 @@ namespace Xamarin.Forms.Platform.Android
 			base.Dispose(disposing);
 		}
 
+		protected override ASwitch CreateNativeControl()
+		{
+			return new ASwitch(Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<Switch> e)
 		{
 			base.OnElementChanged(e);
@@ -58,7 +63,7 @@ namespace Xamarin.Forms.Platform.Android
 			{
 				if (Control == null)
 				{
-					var aswitch = new ASwitch(Context);
+					var aswitch = CreateNativeControl();
 					aswitch.SetOnCheckedChangeListener(this);
 					SetNativeControl(aswitch);
 				}
diff --git a/Xamarin.Forms.Platform.Android/Renderers/TableViewRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/TableViewRenderer.cs
index e4017a7..2ac8efa 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/TableViewRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/TableViewRenderer.cs
@@ -21,6 +21,11 @@ namespace Xamarin.Forms.Platform.Android
 			return new Size(40, 40);
 		}
 
+		protected override AListView CreateNativeControl()
+		{
+			return new AListView(Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<TableView> e)
 		{
 			base.OnElementChanged(e);
@@ -28,7 +33,7 @@ namespace Xamarin.Forms.Platform.Android
 			AListView listView = Control;
 			if (listView == null)
 			{
-				listView = new AListView(Context);
+				listView = CreateNativeControl();
 				SetNativeControl(listView);
 			}
 
diff --git a/Xamarin.Forms.Platform.Android/Renderers/TimePickerRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/TimePickerRenderer.cs
index 2b33acc..2bd60a7 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/TimePickerRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/TimePickerRenderer.cs
@@ -34,13 +34,18 @@ namespace Xamarin.Forms.Platform.Android
 			_dialog = null;
 		}
 
+		protected override EditText CreateNativeControl()
+		{
+			return new EditText(Context) { Focusable = false, Clickable = true, Tag = this };
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<TimePicker> e)
 		{
 			base.OnElementChanged(e);
 
 			if (e.OldElement == null)
 			{
-				var textField = new EditText(Context) { Focusable = false, Clickable = true, Tag = this };
+				var textField = CreateNativeControl();
 
 				textField.SetOnClickListener(TimePickerListener.Instance);
 				SetNativeControl(textField);
diff --git a/Xamarin.Forms.Platform.Android/Renderers/WebViewRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/WebViewRenderer.cs
index 24a5af5..bd5b805 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/WebViewRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/WebViewRenderer.cs
@@ -56,13 +56,18 @@ namespace Xamarin.Forms.Platform.Android
 			return new Size(Context.ToPixels(40), Context.ToPixels(40));
 		}
 
+		protected override AWebView CreateNativeControl()
+		{
+			return new AWebView(Context);
+		}
+
 		protected override void OnElementChanged(ElementChangedEventArgs<WebView> e)
 		{
 			base.OnElementChanged(e);
 
 			if (Control == null)
 			{
-				var webView = new AWebView(Context);
+				var webView = CreateNativeControl();
 #pragma warning disable 618 // This can probably be replaced with LinearLayout(LayoutParams.MatchParent, LayoutParams.MatchParent); just need to test that theory
 				webView.LayoutParameters = new global::Android.Widget.AbsoluteLayout.LayoutParams(LayoutParams.MatchParent, LayoutParams.MatchParent, 0, 0);
 #pragma warning restore 618
diff --git a/Xamarin.Forms.Platform.Android/ViewRenderer.cs b/Xamarin.Forms.Platform.Android/ViewRenderer.cs
index 63fef49..f285d6d 100644
--- a/Xamarin.Forms.Platform.Android/ViewRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/ViewRenderer.cs
@@ -13,6 +13,8 @@ namespace Xamarin.Forms.Platform.Android
 
 	public abstract class ViewRenderer<TView, TNativeView> : VisualElementRenderer<TView>, AView.IOnFocusChangeListener where TView : View where TNativeView : AView
 	{
+		protected abstract TNativeView CreateNativeControl();
+
 		ViewGroup _container;
 
 		bool _disposed;
-- 
2.7.4