update fun5

SampleApp/SampleApp.Android/AndroidHasFocus.cs

 using System;
-using System.Threading.Tasks;
-using Android.Content;
-using Android.Views.Accessibility;
-using SampleApp.CustomRenderers;
-using SampleApp.Droid;
+using Android.Views;
+using fun5.Droid;
+using SampleApp.DependencyServices;
 using Xamarin.Forms;
 using Xamarin.Forms.Platform.Android;
 
-[assembly: ExportRenderer(typeof(CustomLabel), typeof(AndroidHasFocus))]
-namespace SampleApp.Droid
+[assembly: Dependency(typeof(focusAndroid))]
+namespace fun5.Droid
 {
-    public class AndroidHasFocus : LabelRenderer
+    public class focusAndroid : IIsFocused
     {
 
-        Context context;
-
-        public AndroidHasFocus(Context context) : base(context)
+        public bool isFocused(Xamarin.Forms.View v)
         {
-            this.context = context;
+            return v.GetRenderer().View.IsAccessibilityFocused;
         }
-
-        protected override void OnElementChanged(ElementChangedEventArgs<Label> e)
-        {
-            base.OnElementChanged(e);
-
-            if(Control != null)
-            {
-                Task.Delay(3000).ContinueWith((arg) =>
-                {
-                    Device.BeginInvokeOnMainThread(() => {
-                        if (Control.IsAccessibilityFocused)
-                        {
-                            Control.Text = "Focus";
-                            Console.WriteLine("focus");
-                        }
-                        else
-                        {
-                            Control.Text = "Not in focus";
-                            Console.WriteLine("Not in focus");
-                        }
-                    });
-
-
-                });
-            }
-
-
-
-            
-
-
-        }
-        
     }
-
-    
-}
+}
\ No newline at end of file

SampleApp/SampleApp.Android/SampleApp.Android.csproj

@@ -53,7 +53,7 @@
     <Reference Include="System.Numerics.Vectors" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Xamarin.Forms" Version="4.7.0.968" />
+    <PackageReference Include="Xamarin.Forms" Version="4.8.0.1451" />
     <PackageReference Include="Xamarin.Essentials" Version="1.5.3.2" />
   </ItemGroup>
   <ItemGroup>

SampleApp/SampleApp.iOS/SampleApp.iOS.csproj

@@ -128,7 +128,7 @@
     <Reference Include="System.Numerics.Vectors" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Xamarin.Forms" Version="4.7.0.968" />
+    <PackageReference Include="Xamarin.Forms" Version="4.8.0.1451" />
     <PackageReference Include="Xamarin.Essentials" Version="1.5.3.2" />
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.CSharp.targets" />

SampleApp/SampleApp.iOS/iOSFocusEvents.cs

@@ -4,7 +4,6 @@ using Xamarin.Forms;
 using SampleApp.iOS;
 using Xamarin.Forms.Platform.iOS;
 using SampleApp.Views;
-using SampleApp.Models;
 
 [assembly: ExportRenderer(typeof(IFocusEvents), typeof(iOSFocusEvents))]
 namespace SampleApp.iOS

SampleApp/SampleApp.iOS/iOSHasFocus.cs

 using System;
-using System.Runtime.Remoting.Contexts;
-using System.Threading;
-using System.Threading.Tasks;
-using System.Timers;
-using SampleApp.CustomRenderers;
-using SampleApp.iOS;
 using UIKit;
 using Xamarin.Forms;
 using Xamarin.Forms.Platform.iOS;
+using fun5.iOS;
+using System.Threading.Tasks;
+using SampleApp.DependencyServices;
 
-[assembly: ExportRenderer(typeof(CustomLabel),typeof(iOSHasFocus))]
-namespace SampleApp.iOS
+[assembly: Dependency(typeof(iOSFocus))]
+namespace fun5.iOS
 {
-    public class iOSHasFocus : LabelRenderer
-    {
-
-        protected override void OnElementChanged(ElementChangedEventArgs<Label> e)
-        {
-            base.OnElementChanged(e);
-
-            if (Control != null)
-            {
-                SetNativeControl(new AccessibleLabel());
-            }
-        }
-
-
-
-    }
-
-    public class AccessibleLabel : UILabel
+    public class iOSFocus : IIsFocused
     {
-        public AccessibleLabel() : base()
-        {
-            Console.WriteLine("ACCESSIBLE LABEL CREATED");
-
-            if (AccessibilityElementIsFocused())
-            {
-                this.Text = "focus";
-                Console.WriteLine("accessibilityelementisfocused");
-            }
-            else
-            {
-                this.Text = "NOTinfocus";
-                Console.WriteLine("accessibilityelementisNOTinfocus");
-            }
-
 
-            
-        }
-
-        public override bool AccessibilityElementIsFocused()
+        public bool isFocused(View v)
         {
-            if (base.AccessibilityElementIsFocused())
-            {
-                return true;
-            }
-            else
-            {
-                return false;
-            }
+            return v.GetRenderer().NativeView.AccessibilityElementIsFocused();
         }
 
-
-
-
     }
 }

SampleApp/SampleApp/DependencyServices/IIsFocused.cs

+using System;
+using Xamarin.Forms;
+
+namespace SampleApp.DependencyServices
+{
+    public interface IIsFocused
+    {
+        bool isFocused(View v);
+    }
+}

SampleApp/SampleApp/SampleApp.csproj

@@ -11,7 +11,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Xamarin.Forms" Version="4.7.0.968" />
+    <PackageReference Include="Xamarin.Forms" Version="4.8.0.1451" />
     <PackageReference Include="Xamarin.Essentials" Version="1.5.3.2" />
   </ItemGroup>
   <ItemGroup>

SampleApp/SampleApp/Views/Functionality5.xaml

 <?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="SampleApp.Views.Functionality5">
-    <StackLayout x:Name="background"></StackLayout>
+<ContentPage xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" x:Class="SampleApp.Views.Functionality5" xmlns:local="clr-namespace:SampleApp;assembly=SampleApp">
+    <StackLayout x:Name="background">
+        <Image Source="{local:ImageResource SampleApp.images.bell.png}" x:Name="bellImage"></Image>
+    </StackLayout>
 </ContentPage>

SampleApp/SampleApp/Views/Functionality5.xaml.cs

 using System;
-using System.Collections.Generic;
-using SampleApp.CustomRenderers;
+using System.Reflection;
+using SampleApp.DependencyServices;
 using Xamarin.Forms;
 
 namespace SampleApp.Views
 {
     public partial class Functionality5 : ContentPage
     {
-        
+
+
+        //label
+        Label  label= new Label { Text = "Does the Bell's Image Have the Focus?", HorizontalOptions = LayoutOptions.CenterAndExpand };
+        Label labelYN = new Label { Text = "YES/ NO", HorizontalOptions = LayoutOptions.CenterAndExpand };
+        Label infoLabel = new Label { Text = "i: This view updates every 2 seconds", HorizontalOptions = LayoutOptions.CenterAndExpand, Margin = new Thickness(0, 200) };
+
+        IIsFocused dependency;
+
         public Functionality5()
         {
             InitializeComponent();
 
+            dependency = DependencyService.Get<IIsFocused>();
 
 
-            CustomLabel label = new CustomLabel
-            {
-                Text = "Focus?",
-                HorizontalOptions = LayoutOptions.Center,
-                VerticalOptions = LayoutOptions.Center
-            };
-            
             background.Children.Add(label);
-            AutomationProperties.SetIsInAccessibleTree(label, true);
+            background.Children.Add(labelYN);
+            background.Children.Add(infoLabel);
 
+            AutomationProperties.SetIsInAccessibleTree(label, true);
+            AutomationProperties.SetIsInAccessibleTree(labelYN, true);
+            AutomationProperties.SetIsInAccessibleTree(bellImage, true);
+            AutomationProperties.SetHelpText(bellImage, "Bell Image");
 
+            // timer che si ripete ogni 2 secondi
+            Device.StartTimer(TimeSpan.FromMilliseconds(2000.0), () =>
+            {
+                Console.WriteLine("TIMER FIRED");
+                Device.BeginInvokeOnMainThread(() =>
+                {
+                    if (dependency.isFocused(bellImage))
+                    {
+                        Console.WriteLine("is focused");
+                        labelYN.TextColor = Color.Green;
+                        labelYN.Text = "YES";
+                    }
+                    else
+                    {
+                        Console.WriteLine("is NOT focused");
+                        labelYN.TextColor = Color.Red;
+                        labelYN.Text = "NO";
+                    }
+                });
+                return true; // runs again, or false to stop
+            });
         }
 
-       
     }
 }