chore: Updated analysers to v8 and fixed all errors (from new analyzers)

samples/Directory.Packages.props

@@ -3,7 +3,7 @@
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
   </PropertyGroup>
   <ItemGroup>
-    <PackageVersion Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="7.0.0-preview1.22518.1" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="8.0.0" />
     <PackageVersion Include="Microsoft.Extensions.Logging" Version="5.0.0" />
     <PackageVersion Include="Microsoft.Extensions.Logging.Console" Version="5.0.0" />
     <PackageVersion Include="Microsoft.Extensions.Logging.Debug" Version="5.0.0" />

samples/Uno.Toolkit.Samples/Uno.Toolkit.Samples.Shared/App.xaml.cs

@@ -84,7 +84,7 @@ public App()
 		/// <param name="e">Details about the launch request and process.</param>
 		protected override async void OnLaunched(XamlLaunchActivatedEventArgs e)
 		{
-#if __IOS__ && USE_UITESTS
+#if __IOS__ && USE_UITESTS && !MACCATALYST
 			Xamarin.Calabash.Start();
 #endif
 

src/Directory.Packages.props

@@ -38,6 +38,6 @@
     <PackageVersion Include="Uno.UITest.Xamarin" Version="1.1.0-dev.70" />
     <PackageVersion Include="Xamarin.UITest" Version="4.3.3" />
     <PackageVersion Include="MSTest.TestFramework" Version="2.1.2" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="7.0.0-preview1.22518.1" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="8.0.0" />
   </ItemGroup>
 </Project>

src/Uno.Toolkit.UI/Behaviors/TabBarSelectorBehavior.Properties.cs

@@ -41,13 +41,18 @@ public static void SetSelector(DependencyObject obj, Selector? value)
 
 		#region State Attached Property (private)
 		[DynamicDependency(nameof(SetState))]
+// TODO: Review whether DependencyObject can be changed to TabBar
+#pragma warning disable CA1859 // Use concrete types when possible for improved performance 
 		private static TabBarSelectorBehaviorState? GetState(DependencyObject obj)
 		{
 			return (TabBarSelectorBehaviorState)obj.GetValue(StateProperty);
 		}
 
 		[DynamicDependency(nameof(GetState))]
+		// TODO: Review whether DependencyObject can be changed to TabBar
+#pragma warning disable CA1859 // Use concrete types when possible for improved performance 
 		private static void SetState(DependencyObject obj, TabBarSelectorBehaviorState? value)
+#pragma warning restore CA1859 // Use concrete types when possible for improved performance
 		{
 			obj.SetValue(StateProperty, value);
 		}

src/Uno.Toolkit.UI/Behaviors/VisualStateManagerExtensions.cs

@@ -46,6 +46,8 @@ public static class VisualStateManagerExtensions
 		typeof(VisualStateManagerExtensions),
 		new PropertyMetadata(default(string), OnStatesChanged));
 
+	private static readonly char[] separator = new char[] { ',', ';', ' ' };
+
 	/// <summary>
 	/// Sets the visual states of the control.
 	/// </summary>
@@ -72,7 +74,7 @@ private static void OnStatesChanged(DependencyObject sender, DependencyPropertyC
 	{
 		if (sender is Control control && e.NewValue is string { Length: >0 } value)
 		{
-			var states = value.Split(new char[] { ',', ';', ' ' }, StringSplitOptions.RemoveEmptyEntries)
+			var states = value.Split(separator, StringSplitOptions.RemoveEmptyEntries)
 				.Where(x => !string.IsNullOrEmpty(x))
 				.Select(x => x.Trim())
 				.ToArray();
@@ -89,7 +91,7 @@ private static void OnStatesChanged(DependencyObject sender, DependencyPropertyC
 				anySuccessed |= success;
 			}
 
-			if (states.Any() && !anySuccessed)
+			if (states.Length != 0 && !anySuccessed)
 			{
 				WarnForMisplacedVisualStateGroups(control);
 			}

src/Uno.Toolkit.UI/Controls/ExtendedSplashScreen/ExtendedSplashScreen.Windows.NetStandard.cs

@@ -108,7 +108,7 @@ public partial class ExtendedSplashScreen
 				catch
 				{
 					var entry = Assembly.GetEntryAssembly();
-					var res = entry?.GetManifestResourceNames()?.FirstOrDefault(x => x.ToLower().Contains(WasmAppManifestFilename));
+					var res = entry?.GetManifestResourceNames()?.FirstOrDefault(x => x.ToLower().Contains(WasmAppManifestFilename, StringComparison.InvariantCultureIgnoreCase));
 					if (string.IsNullOrWhiteSpace(res))
 					{
 						return null;
@@ -125,8 +125,8 @@ public partial class ExtendedSplashScreen
 				{
 					return null;
 				}
-				var startIdx = manifestString.IndexOf("{") + 1;
-				var endIdx = manifestString.LastIndexOf("}") - 1;
+				var startIdx = manifestString.IndexOf('{') + 1;
+				var endIdx = manifestString.LastIndexOf('}') - 1;
 				manifestString = manifestString.Substring(startIdx, endIdx - startIdx); // Trim "var UnoAppManifest = " from the start of the file so we're left with just the JSON
 				var pairs = (from pair in manifestString.Trim().Split(',')
 							 let bits = pair.Split(':')

src/Uno.Toolkit.UI/Controls/NavigationBar/NativeFramePresenter.Android.cs

@@ -108,7 +108,7 @@ private async Task InvalidateStack()
 
 			_isUpdatingStack = true;
 
-			while (_stackUpdates.Any())
+			while (_stackUpdates.Count != 0)
 			{
 				var navigation = _stackUpdates.Dequeue();
 				await UpdateStack(navigation.pageEntry, navigation.args);
@@ -187,7 +187,7 @@ private async Task UpdateStack(PageStackEntry? entry, NavigationEventArgs e)
 							_pageStack.Children.Insert(0, newPage);
 						}
 					}
-				break;
+					break;
 			}
 
 			_currentEntry = newEntry;
@@ -199,7 +199,9 @@ private static bool GetIsAnimated(PageStackEntry? entry)
 			return !(entry?.NavigationTransitionInfo is SuppressNavigationTransitionInfo);
 		}
 
+#pragma warning disable CA1859 // Use concrete types when possible for improved performance - Returning Android.Views.Animations.AnimationSet only applicable on Android
 		private static Animation GetEnterAnimation()
+#pragma warning restore CA1859 // Use concrete types when possible for improved performance
 		{
 			// Source:
 			// https://android.googlesource.com/platform/frameworks/base/+/android-cts-7.1_r5/core/res/res/anim/activity_open_enter.xml
@@ -236,7 +238,9 @@ private static Animation GetEnterAnimation()
 			return enterAnimation;
 		}
 
+#pragma warning disable CA1859 // Use concrete types when possible for improved performance - Returning Android.Views.Animations.AnimationSet only applicable on Android
 		private static Animation GetExitAnimation()
+#pragma warning restore CA1859 // Use concrete types when possible for improved performance
 		{
 			// Source:
 			// https://android.googlesource.com/platform/frameworks/base/+/android-cts-7.1_r5/core/res/res/anim/activity_close_exit.xml

src/Uno.Toolkit.UI/Controls/TabBar/TabBarListPanel.cs

@@ -43,9 +43,9 @@ protected override Size MeasureOverride(Size availableSize)
 			var widthOfWidest = 0d;
 			var heightOfTallest = 0d;
 
-			var visibleChildren = Children.Where(IsVisible);
+			var visibleChildren = Children.Where(IsVisible).ToArray();
 
-			var count = visibleChildren.Count();
+			var count = visibleChildren.Length;
 			if (count < 1)
 			{
 				return availableSize.FiniteOrDefault(default);
@@ -95,8 +95,8 @@ protected override Size MeasureOverride(Size availableSize)
 
 		protected override Size ArrangeOverride(Size finalSize)
 		{
-			var visibleChildren = Children.Where(IsVisible);
-			var count = visibleChildren.Count();
+			var visibleChildren = Children.Where(IsVisible).ToArray();
+			var count = visibleChildren.Length;
 			if (count < 1)
 			{
 				return finalSize;

src/Uno.Toolkit.UI/Helpers/ImageHelper.iOS.cs

@@ -11,6 +11,8 @@ namespace Uno.Toolkit.UI
 {
 	internal static class ImageHelper
 	{
+		private static readonly char[] trimChars = new[] { '/' };
+
 		public static UIImage? FromUri(Uri? uri)
 		{
 			if (uri == null)
@@ -19,11 +21,11 @@ internal static class ImageHelper
 			}
 
 			var bundleName = Path.GetFileName(uri.AbsolutePath);
-			var bundlePath = uri.PathAndQuery.TrimStart(new[] { '/' });
+			var bundlePath = uri.PathAndQuery.TrimStart(trimChars);
 
 			var image = UIImage.FromFile(bundleName) ?? UIImage.FromFile(bundlePath);
 			return image;
 		}
 	}
 }
-#endif
+#endif

src/Uno.Toolkit.UI/Helpers/VisualTreeHelperEx.cs

@@ -53,7 +53,7 @@ internal static partial class VisualTreeHelperEx
 		/// </summary>
 		/// <param name="reference">Any node of the visual tree</param>
 		public static string TreeGraph(this DependencyObject reference) => TreeGraph(reference, DebugVTNode);
-		
+
 		/// <summary>
 		/// Produces a text representation of the visual tree, using the provided method of description.
 		/// </summary>
@@ -112,7 +112,7 @@ void Print(object o, int depth)
 		public static T? GetFirstAncestor<T>(this DependencyObject reference, Func<T, bool> predicate) => GetAncestors(reference)
 			.OfType<T>()
 			.FirstOrDefault(predicate);
-		
+
 		/// <summary>
 		/// Returns the first ancestor of a specified type that satisfies the <paramref name="predicate"/>.
 		/// </summary>
@@ -374,21 +374,22 @@ public static IEnumerable<_View> GetDescendants(_View reference, Func<_View, boo
 			}
 
 #if __IOS__
-			private static IEnumerable<_View> GetChildren(_View reference)
+			private static _View[] GetChildren(_View reference)
 			{
 				return reference.Subviews;
 			}
 #elif __ANDROID__
-			private static IEnumerable<_View> GetChildren(_View reference)
+			private static _View[] GetChildren(_View reference)
 			{
 				if (reference is Android.Views.ViewGroup vg)
 				{
 					return Enumerable
 						.Range(0, vg.ChildCount)
-						.Select(vg.GetChildAt)!;
+						.Select(idx => vg.GetChildAt(idx)!)
+						.ToArray();
 				}
 
-				return Enumerable.Empty<_View>();
+				return Array.Empty<_View>();
 			}
 #endif
 		}

src/library/Uno.Toolkit.Cupertino/Converters/InflateDimensionConverter.cs

@@ -15,7 +15,7 @@
 namespace Uno.Toolkit.UI
 {
 	[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1812:AvoidUninstantiatedInternalClasses", Justification = "Converters")]
-	internal class InflateDimensionConverter : IValueConverter
+	internal sealed class InflateDimensionConverter : IValueConverter
 	{
 		public double Inflation { get; set; }
 		public double DefaultValue { get; set; }

src/library/Uno.Toolkit.Cupertino/Styles/Controls/BottomTabBar.xaml

@@ -37,11 +37,12 @@
     <Thickness x:Key="CupertinoBottomTabBarItemContentMargin">0,0,0,12</Thickness>
     <Thickness x:Key="CupertinoBottomTabBarItemContentOnlyMargin">12,0</Thickness>
 
+	<!-- Which of these CupertinoBottomTabBarBackground resources is correct -->
     <StaticResource x:Key="CupertinoBottomTabBarBackground"
 							ResourceKey="CupertinoBottomTabBarBackgroundBrush" />
 
-    <StaticResource x:Key="CupertinoBottomTabBarBackground"
-							ResourceKey="SystemControlTransparentBrush" />
+    <!--<StaticResource x:Key="CupertinoBottomTabBarBackground"
+							ResourceKey="SystemControlTransparentBrush" />-->
     <StaticResource x:Key="CupertinoBottomTabBarBackgroundPointerOver"
 							ResourceKey="SystemControlTransparentBrush" />
     <StaticResource x:Key="CupertinoBottomTabBarBackgroundPressed"

src/library/Uno.Toolkit.Cupertino/Styles/Controls/SegmentedControl.xaml

@@ -44,8 +44,9 @@
     <StaticResource x:Key="CupertinoSegmentedControlItemForegroundSelectedPressed"
 							ResourceKey="CupertinoSystemBackgroundBrush" />
 
-    <StaticResource x:Key="CupertinoSegmentedControlItemBorderBrush"
-							ResourceKey="CupertinoBlueBrush" />
+	<!-- Which of these CupertinoSegmentedControlItemBorderBrush is correct -->
+    <!--<StaticResource x:Key="CupertinoSegmentedControlItemBorderBrush"
+							ResourceKey="CupertinoBlueBrush" />-->
 
     <x:Double x:Key="CupertinoSegmentedControlFontSize">12</x:Double>
     <FontFamily x:Key="CupertinoSegmentedControlFontFamily">SF Pro</FontFamily>