[Android] FlowDirection property now has an effect on label controls

Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue2447.xaml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ContentPage xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" x:Class="Xamarin.Forms.Controls.Issues.Issue2447" FlowDirection="RightToLeft">
+    <ContentPage.Content>
+        <StackLayout>
+            <Label Text="English Text" FontSize="Large" FlowDirection="RightToLeft"/>
+            <Label Text="نووسینی کوردی" FontSize="Large" FlowDirection="RightToLeft" />
+            <Label Text="English Text" FontSize="Large" FlowDirection="LeftToRight"/>
+            <Label Text="نووسینی کوردی" FontSize="Large" FlowDirection="LeftToRight"/>
+            <Label Text="English Text" FontSize="Large"/>
+            <Label Text="نووسینی کوردی" FontSize="Large"/>
+        </StackLayout>
+    </ContentPage.Content>
+</ContentPage>

Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue2447.xaml.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using Xamarin.Forms;
+using Xamarin.Forms.CustomAttributes;
+using System.Windows.Input;
+using System.Diagnostics;
+
+using Xamarin.Forms.Internals;
+
+namespace Xamarin.Forms.Controls.Issues
+{
+
+#if APP
+#if UITEST
+	[NUnit.Framework.Category(Core.UITests.UITestCategories.Github5000)]
+#endif
+	[Preserve (AllMembers = true)]
+	[Issue (IssueTracker.Github, 2447, "Force label text direction", PlatformAffected.Android)]
+	public partial class Issue2447 : ContentPage
+	{
+		public Issue2447 ()
+		{
+			InitializeComponent();
+		}
+	}
+#endif
+}

Xamarin.Forms.Platform.Android/Renderers/LabelRenderer.cs

@@ -122,6 +122,7 @@ protected override void OnElementChanged(ElementChangedEventArgs<Label> e)
 				UpdateLineHeight();
 				UpdateGravity();
 				UpdateMaxLines();
+				UpdateFlowDirection();
 			}
 			else
 			{	
@@ -134,6 +135,8 @@ protected override void OnElementChanged(ElementChangedEventArgs<Label> e)
 					UpdateMaxLines();
 				if (e.OldElement.CharacterSpacing != e.NewElement.CharacterSpacing)
 					UpdateCharacterSpacing();
+				if (e.OldElement.FlowDirection != e.NewElement.FlowDirection)
+					UpdateFlowDirection();
 			}
 			UpdateTextDecorations();
 			UpdatePadding();
@@ -169,6 +172,13 @@ protected override void OnElementPropertyChanged(object sender, PropertyChangedE
 				UpdateMaxLines();
 			else if (e.PropertyName == Label.PaddingProperty.PropertyName)
 				UpdatePadding();
+			else if (e.PropertyName == VisualElement.FlowDirectionProperty.PropertyName)
+				UpdateFlowDirection();
+		}
+
+		void UpdateFlowDirection()
+		{
+			Control.UpdateFlowDirection(Element);
 		}
 
 		void UpdateColor()