Refactor Android UI: MD3, shared transitions, perf, cleanup

- Major UI modernization: Material Design 3 components, new toolbars, and dashboard metrics
- Implement shared element transitions and morphing fragments for song details
- Refactor RecyclerView adapters to use DiffUtil for smooth, animated updates
- Centralize usings and clean up redundant imports
- Improve app lifecycle handling with async state persistence
- Enhance error handling, code readability, and maintainability
- Update WinUI song detail page with better controls and feedback
- Numerous bug fixes, null checks, and minor UI/UX improvements

Author: YBTopaz8

Dimmer/Dimmer.Droid/DimmerAudio/ExoPlayerService.cs

@@ -32,8 +32,6 @@
 using Android.Media;
 
 using MediaController = AndroidX.Media3.Session.MediaController;
-
-using AndroidX.Lifecycle;
 using Exception = System.Exception;
 
 namespace Dimmer.DimmerAudio; // Make sure this namespace is correct

Dimmer/Dimmer.Droid/DimmerAudio/NotificationHelper.cs

@@ -1,6 +1,4 @@
-using Android.Content;
-
-using AndroidX.Core.App;
+using AndroidX.Core.App;
 using AndroidX.Media3.Common;
 using AndroidX.Media3.Session;
 using AndroidX.Media3.UI;

Dimmer/Dimmer.Droid/DimmerAudio/QuickSettingsTileService.cs

@@ -2,8 +2,6 @@
 
 using AndroidX.Media3.Session;
 
-using Google.Android.Material.Dialog;
-
 namespace Dimmer.DimmerAudio;
 [Service(Name = "com.yvanbrunel.dimmer.QuickSettingsTileService", // <<< CHANGE TO YOUR UNIQUE NAME
            Permission = Android.Manifest.Permission.BindQuickSettingsTile,

Dimmer/Dimmer.Droid/GlobalUsings.cs

@@ -20,7 +20,6 @@
 global using Android.Window;
 global using AndroidX.AppCompat.App;
 global using AndroidX.RecyclerView.Widget;
-global using AndroidX.Transitions;
 global using CommunityToolkit.Mvvm.ComponentModel;
 global using CommunityToolkit.Mvvm.Input;
 global using Dimmer.Data.Models;
@@ -33,12 +32,11 @@
 global using Dimmer.Utils;
 global using Dimmer.Utils.PageAnimations;
 global using Dimmer.ViewModel;
-global using  Dimmer.ViewModels;
+global using Dimmer.ViewModels;
 global using Dimmer.ViewsAndPages.NativeViews.Activity;
 global using Google.Android.Material.BottomSheet;
 global using Google.Android.Material.Button;
 global using Google.Android.Material.Card;
-global using Google.Android.Material.Shape;
 global using Google.Android.Material.TextField;
 global using Google.Android.Material.Transition;
 global using Microsoft.Maui.Controls;
@@ -50,7 +48,6 @@
 global using TextView = Google.Android.Material.TextView.MaterialTextView;
 global using TransitionManager = AndroidX.Transitions.TransitionManager;
 global using Google.Android.Material.Dialog;
-global using Google.Android.Material.SwitchMaterial;
 
 global using DialogFragment = AndroidX.Fragment.App.DialogFragment;
 global using Color = Android.Graphics.Color;
@@ -80,7 +77,6 @@
 global using Slider = Google.Android.Material.Slider.Slider;
 
 global using CommunityToolkit.Maui.Core.Extensions;
-global using CommunityToolkit.Maui.Storage;
 
 global using Dimmer.Data;
 global using Dimmer.Interfaces.IDatabase;
@@ -105,8 +101,6 @@
 global using TransitionSet = AndroidX.Transitions.TransitionSet;
 global using ChangeImageTransform = AndroidX.Transitions.ChangeImageTransform;
 
-global using Resource = Microsoft.Maui.Resource;
-
 global using Android.Text;
 global using AndroidX.Core.View;
 global using Bumptech.Glide;
@@ -120,6 +114,13 @@
 global using System.Reactive.Disposables;
 global using System.Reactive.Disposables.Fluent;
 
+global using AndroidX.CoordinatorLayout.Widget;
+global using AndroidX.Core.Widget;
+global using Dimmer.ViewsAndPages.NativeViews.AlbumSection;
+global using Google.Android.Material.Behavior;
+global using Google.Android.Material.Floatingtoolbar;
+global using Google.Android.Material.Loadingindicator;
+global using static Dimmer.ViewsAndPages.NativeViews.SongAdapter;
 
 
 namespace Dimmer;

Dimmer/Dimmer.Droid/TQL/TqlGuideAdapter.cs

@@ -1,7 +1,5 @@
 using Dimmer.DimmerSearch.TQLDoc;
 
-using Google.Android.Material.Chip;
-
 namespace Dimmer.TQL;
 
 

Dimmer/Dimmer.Droid/UiUtils/SmoothBarView.cs

@@ -1,18 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using Microsoft.Maui.Controls.PlatformConfiguration;
-
-namespace Dimmer.UiUtils;
+namespace Dimmer.UiUtils;
 
 using Android.Animation;
 using Android.Content;
@@ -24,15 +10,14 @@ namespace Dimmer.UiUtils;
 using AndroidX.CoordinatorLayout.Widget;
 using AndroidX.Core.Graphics.Drawable;
 using AndroidX.Core.View;
-using Google.Android.Material.Behavior;
 using System;
 using System.Collections.Generic;
 using System.Linq;
 
 
-    // --- 1. ENUMS & MODELS ---
+// --- 1. ENUMS & MODELS ---
 
-    public enum BadgeType { Circle, Box }
+public enum BadgeType { Circle, Box }
     public enum TextOrientation { Side, Bottom }
 
     public class Badge

Dimmer/Dimmer.Droid/UiUtils/UiBuilder.cs

@@ -1,12 +1,7 @@
-using Android.Text;
-using AndroidX.Lifecycle;
-using CommunityToolkit.Diagnostics;
+using CommunityToolkit.Diagnostics;
 using Google.Android.Material.Snackbar;
-using Xamarin.Google.Crypto.Tink.Signature;
 using static Dimmer.Utils.AppUtil;
 
-using TextAlignment = Android.Views.TextAlignment;
-
 namespace Dimmer.UiUtils;
 
 public static class UiBuilder

Dimmer/Dimmer.Droid/Utils/AndroidErrorPresenter.cs

@@ -1,9 +1,3 @@
-using System;
-using System.Diagnostics;
-using Android.Widget;
-using Dimmer.Interfaces;
-using Google.Android.Material.Dialog;
-
 namespace Dimmer.Utils;
 
 /// <summary>

Dimmer/Dimmer.Droid/Utils/AnimationHelper.cs

@@ -0,0 +1,55 @@
+using AndroidX.Interpolator.View.Animation;
+using Fade = AndroidX.Transitions.Fade;
+
+namespace Dimmer.Utils;
+
+
+public static class AnimationHelper
+{
+    /// <summary>
+    /// Executes a Morph (Shared Element) transition from one Fragment to another.
+    /// </summary>
+    public static void ShowMorphingFragment(
+        FragmentManager fragmentManager,
+        Fragment destinationFragment,
+        params (View SourceView, string TransitionName)[] sharedElements)
+    {
+        // 1. Define the Morphing Animation
+        var morphTransition = new TransitionSet();
+        morphTransition.AddTransition(new ChangeBounds());
+        morphTransition.AddTransition(new ChangeTransform());
+        morphTransition.AddTransition(new ChangeImageTransform());
+
+        // Spring-like bouncy interpolator for a modern feel
+        morphTransition.SetInterpolator(new FastOutSlowInInterpolator());
+        morphTransition.SetDuration(350);
+
+        // 2. Apply to the Destination Fragment
+        destinationFragment.SharedElementEnterTransition = morphTransition;
+        destinationFragment.SharedElementReturnTransition = morphTransition;
+
+        // Optional: Fade out the old fragment slightly
+        var dTrans = new Fade ();
+        dTrans.SetDuration(300);
+        destinationFragment.EnterTransition = dTrans;
+
+        destinationFragment.ReturnTransition = dTrans;
+
+        // 3. Build and Execute Transaction
+        var transaction = fragmentManager.BeginTransaction();
+        transaction.SetReorderingAllowed(true); // REQUIRED for shared elements
+
+        // Add all shared elements to the transaction
+        foreach (var element in sharedElements)
+        {
+            ViewCompat.SetTransitionName(element.SourceView, element.TransitionName);
+            transaction.AddSharedElement(element.SourceView, element.TransitionName);
+        }
+
+        // Add the overlay fragment (Assuming your activity has a root container with this ID)
+        // If you don't have a specific container, Android.Resource.Id.Content is the root of the screen.
+        transaction.Add(Android.Resource.Id.Content, destinationFragment, "MorphOverlay");
+        transaction.AddToBackStack("MorphOverlay");
+        transaction.Commit();
+    }
+}

Dimmer/Dimmer.Droid/Utils/AppUtils.cs

@@ -1,5 +1,4 @@
 using System.Security.Cryptography;
-using Android.Hardware.Input;
 using Android.Views.InputMethods;
 using Application = Android.App.Application;
 using Path = System.IO.Path;