🎨 Update callers to avoid deprecated usage

Author: AlexV525

example/lib/customs/pickers/directory_file_asset_picker.dart

@@ -469,7 +469,7 @@ class FileAssetPickerBuilder
   @override
   PreferredSizeWidget appBar(BuildContext context) {
     return AppBar(
-      backgroundColor: theme.appBarTheme.color,
+      backgroundColor: theme.appBarTheme.backgroundColor,
       centerTitle: isAppleOS,
       title: pathEntitySelector(context),
       leading: backButton(context),
@@ -1359,7 +1359,8 @@ class FileAssetPickerViewerBuilderDelegate
     return AnimatedPositioned(
       duration: kThemeAnimationDuration,
       curve: Curves.easeInOut,
-      top: _isDisplayingDetail ? 0.0 : -(Screens.topSafeHeight + kToolbarHeight),
+      top:
+          _isDisplayingDetail ? 0.0 : -(Screens.topSafeHeight + kToolbarHeight),
       left: 0.0,
       right: 0.0,
       height: Screens.topSafeHeight + kToolbarHeight,
@@ -1543,7 +1544,7 @@ class FileAssetPickerViewerBuilderDelegate
             border: !isSelected
                 ? Border.all(color: themeData.iconTheme.color!)
                 : null,
-            color: isSelected ? themeData.buttonColor : null,
+            color: isSelected ? themeData.colorScheme.secondary : null,
             shape: BoxShape.circle,
           ),
           child: Center(

lib/src/constants/extensions.dart

@@ -27,5 +27,6 @@ extension ColorExtension on Color {
 }
 
 extension ThemeDataExtension on ThemeData {
-  Brightness get effectiveBrightness => appBarTheme.brightness ?? brightness;
+  Brightness get effectiveBrightness =>
+      appBarTheme.systemOverlayStyle?.statusBarBrightness ?? brightness;
 }

lib/src/delegates/asset_picker_builder_delegate.dart

@@ -759,7 +759,7 @@ class DefaultAssetPickerBuilderDelegate
   @override
   PreferredSizeWidget appBar(BuildContext context) {
     return FixedAppBar(
-      backgroundColor: theme.appBarTheme.color,
+      backgroundColor: theme.appBarTheme.backgroundColor,
       centerTitle: isAppleOS,
       title: pathEntitySelector(context),
       leading: backButton(context),
@@ -787,34 +787,38 @@ class DefaultAssetPickerBuilderDelegate
           child: Selector<DefaultAssetPickerProvider, bool>(
             selector: (_, DefaultAssetPickerProvider p) => p.hasAssetsToDisplay,
             builder: (_, bool hasAssetsToDisplay, __) {
+              final Widget _child;
               final bool shouldDisplayAssets = hasAssetsToDisplay ||
                   (allowSpecialItemWhenEmpty &&
                       specialItemPosition != SpecialItemPosition.none);
-              return AnimatedSwitcher(
-                duration: switchingPathDuration,
-                child: shouldDisplayAssets
-                    ? Stack(
+              if (shouldDisplayAssets) {
+                _child = Stack(
+                  children: <Widget>[
+                    RepaintBoundary(
+                      child: Stack(
                         children: <Widget>[
-                          RepaintBoundary(
-                            child: Stack(
-                              children: <Widget>[
-                                Positioned.fill(
-                                  child: assetsGridBuilder(context),
-                                ),
-                                if ((!isSingleAssetMode || isAppleOS) &&
-                                    isPreviewEnabled)
-                                  Positioned.fill(
-                                    top: null,
-                                    child: bottomActionBar(context),
-                                  ),
-                              ],
-                            ),
+                          Positioned.fill(
+                            child: assetsGridBuilder(context),
                           ),
-                          pathEntityListBackdrop(context),
-                          pathEntityListWidget(context),
+                          if ((!isSingleAssetMode || isAppleOS) &&
+                              isPreviewEnabled)
+                            Positioned.fill(
+                              top: null,
+                              child: bottomActionBar(context),
+                            ),
                         ],
-                      )
-                    : loadingIndicator(context),
+                      ),
+                    ),
+                    pathEntityListBackdrop(context),
+                    pathEntityListWidget(context),
+                  ],
+                );
+              } else {
+                _child = loadingIndicator(context);
+              }
+              return AnimatedSwitcher(
+                duration: switchingPathDuration,
+                child: _child,
               );
             },
           ),
@@ -926,29 +930,31 @@ class DefaultAssetPickerBuilderDelegate
               child: ColoredBox(
                 color: theme.canvasColor,
                 child: Selector<DefaultAssetPickerProvider, List<AssetEntity>>(
-                  selector: (_, DefaultAssetPickerProvider provider) =>
-                      provider.currentAssets,
-                  builder: (_, List<AssetEntity> assets, __) =>
-                      CustomScrollView(
-                    physics: const AlwaysScrollableScrollPhysics(),
-                    controller: gridScrollController,
-                    anchor: isAppleOS ? anchor : 0,
-                    center: isAppleOS ? gridRevertKey : null,
-                    slivers: <Widget>[
-                      if (isAppleOS)
-                        SliverGap.v(context.topPadding + kToolbarHeight),
-                      _sliverGrid(_, assets),
-                      // Ignore the gap when the [anchor] is not equal to 1.
-                      if (isAppleOS && anchor == 1)
-                        SliverGap.v(
-                            context.bottomPadding + bottomSectionHeight),
-                      if (isAppleOS)
-                        SliverToBoxAdapter(
-                          key: gridRevertKey,
-                          child: const SizedBox.shrink(),
-                        ),
-                    ],
-                  ),
+                  selector: (_, DefaultAssetPickerProvider p) =>
+                      p.currentAssets,
+                  builder: (_, List<AssetEntity> assets, __) {
+                    return CustomScrollView(
+                      physics: const AlwaysScrollableScrollPhysics(),
+                      controller: gridScrollController,
+                      anchor: isAppleOS ? anchor : 0,
+                      center: isAppleOS ? gridRevertKey : null,
+                      slivers: <Widget>[
+                        if (isAppleOS)
+                          SliverGap.v(context.topPadding + kToolbarHeight),
+                        _sliverGrid(_, assets),
+                        // Ignore the gap when the [anchor] is not equal to 1.
+                        if (isAppleOS && anchor == 1)
+                          SliverGap.v(
+                            context.bottomPadding + bottomSectionHeight,
+                          ),
+                        if (isAppleOS)
+                          SliverToBoxAdapter(
+                            key: gridRevertKey,
+                            child: const SizedBox.shrink(),
+                          ),
+                      ],
+                    );
+                  },
                 ),
               ),
             );

lib/src/delegates/asset_picker_viewer_builder_delegate.dart

@@ -754,7 +754,7 @@ class DefaultAssetPickerViewerBuilderDelegate
             border: !isSelected
                 ? Border.all(color: themeData.iconTheme.color!)
                 : null,
-            color: isSelected ? themeData.buttonColor : null,
+            color: isSelected ? themeData.colorScheme.secondary : null,
             shape: BoxShape.circle,
           ),
           child: const Center(child: Icon(Icons.check, size: 20.0)),

lib/src/widget/asset_picker.dart

@@ -194,13 +194,10 @@ class AssetPicker<Asset, Path> extends StatefulWidget {
   /// 通过主题色构建一个默认的暗黑主题
   static ThemeData themeData(Color themeColor) {
     return ThemeData.dark().copyWith(
-      buttonColor: themeColor,
       primaryColor: Colors.grey[900],
       primaryColorBrightness: Brightness.dark,
       primaryColorLight: Colors.grey[900],
       primaryColorDark: Colors.grey[900],
-      accentColor: themeColor,
-      accentColorBrightness: Brightness.dark,
       canvasColor: Colors.grey[850],
       scaffoldBackgroundColor: Colors.grey[900],
       bottomAppBarColor: Colors.grey[900],
@@ -214,9 +211,13 @@ class AssetPicker<Asset, Path> extends StatefulWidget {
       ),
       indicatorColor: themeColor,
       appBarTheme: const AppBarTheme(
-        brightness: Brightness.dark,
+        systemOverlayStyle: SystemUiOverlayStyle(
+          statusBarBrightness: Brightness.dark,
+          statusBarIconBrightness: Brightness.light,
+        ),
         elevation: 0,
       ),
+      buttonTheme: ButtonThemeData(buttonColor: themeColor),
       colorScheme: ColorScheme(
         primary: Colors.grey[900]!,
         primaryVariant: Colors.grey[900]!,

lib/src/widget/fixed_appbar.dart

@@ -157,7 +157,7 @@ class FixedAppBar extends StatelessWidget implements PreferredSizeWidget {
             ? MaterialType.transparency
             : MaterialType.canvas,
         color: (backgroundColor ??
-                context.themeData.appBarTheme.color ??
+                context.themeData.appBarTheme.backgroundColor ??
                 context.themeData.primaryColor)
             .withOpacity(blurRadius > 0.0 ? 0.90 : 1.0),
         elevation: elevation ?? context.themeData.appBarTheme.elevation ?? 4.0,