⚡ Optimized channel list

lib/main.dart

@@ -33,8 +33,10 @@ void main() async {
     appRunner: () async {
       WidgetsFlutterBinding.ensureInitialized();
 
-      _initializeFirebase();
-      _initializePlatformComponents();
+      await Future.wait([
+        _initializeFirebase(),
+        _initializePlatformComponents(),
+      ]);
 
       runApp(const SolianApp());
     },

lib/screens/chat.dart

@@ -3,7 +3,6 @@ import 'package:font_awesome_flutter/font_awesome_flutter.dart';
 import 'package:get/get.dart';
 import 'package:solian/models/channel.dart';
 import 'package:solian/providers/auth.dart';
-import 'package:solian/providers/content/call.dart';
 import 'package:solian/providers/content/channel.dart';
 import 'package:solian/router.dart';
 import 'package:solian/screens/account/notification.dart';
@@ -30,7 +29,7 @@ class _ChatScreenState extends State<ChatScreen> {
   getProfile() async {
     final AuthProvider auth = Get.find();
     if (!await auth.isAuthorized) return;
-    
+
     final prof = await auth.getProfile();
     _accountId = prof.body['id'];
   }
@@ -65,7 +64,6 @@ class _ChatScreenState extends State<ChatScreen> {
   @override
   Widget build(BuildContext context) {
     final AuthProvider auth = Get.find();
-    final ChatCallProvider call = Get.find();
 
     return Material(
       color: Theme.of(context).colorScheme.surface,
@@ -84,18 +82,6 @@ class _ChatScreenState extends State<ChatScreen> {
             );
           }
 
-          final prefixSlivers = [
-            Obx(() {
-              if (call.current.value != null) {
-                return const SliverToBoxAdapter(
-                  child: ChatCallCurrentIndicator(),
-                );
-              } else {
-                return const SliverToBoxAdapter();
-              }
-            }),
-          ];
-
           return DefaultTabController(
             length: 2,
             child: NestedScrollView(
@@ -183,32 +169,35 @@ class _ChatScreenState extends State<ChatScreen> {
 
                 return TabBarView(
                   children: [
-                    RefreshIndicator(
-                      onRefresh: () => getChannels(),
-                      child: CustomScrollView(
-                        slivers: [
-                          ...prefixSlivers,
-                          ChannelListWidget(
-                            channels:
-                                _channels.where((x) => x.type == 0).toList(),
-                            selfId: _accountId ?? 0,
+                    Column(
+                      children: [
+                        const ChatCallCurrentIndicator(),
+                        Expanded(
+                          child: RefreshIndicator(
+                            onRefresh: () => getChannels(),
+                            child: ChannelListWidget(
+                              channels:
+                                  _channels.where((x) => x.type == 0).toList(),
+                              selfId: _accountId ?? 0,
+                            ),
                           ),
-                        ],
-                      ),
+                        ),
+                      ],
                     ),
-                    RefreshIndicator(
-                      onRefresh: () => getChannels(),
-                      child: CustomScrollView(
-                        slivers: [
-                          ...prefixSlivers,
-                          ChannelListWidget(
-                            channels:
-                                _channels.where((x) => x.type == 1).toList(),
-                            selfId: _accountId ?? 0,
-                            noCategory: true,
+                    Column(
+                      children: [
+                        const ChatCallCurrentIndicator(),
+                        Expanded(
+                          child: RefreshIndicator(
+                            onRefresh: () => getChannels(),
+                            child: ChannelListWidget(
+                              channels: _channels.where((x) => x.type == 1).toList(),
+                              selfId: _accountId ?? 0,
+                              noCategory: true,
+                            ),
                           ),
-                        ],
-                      ),
+                        ),
+                      ],
                     ),
                   ],
                 );

lib/screens/realms/realm_view.dart

@@ -247,34 +247,34 @@ class RealmChannelListWidget extends StatelessWidget {
       builder: (context, snapshot) {
         return RefreshIndicator(
           onRefresh: onRefresh,
-          child: CustomScrollView(
-            slivers: [
-              SliverToBoxAdapter(
-                child: ListTile(
-                  leading: const Icon(Icons.add_box),
-                  contentPadding: const EdgeInsets.only(left: 32, right: 8),
-                  tileColor: Theme.of(context).colorScheme.surfaceContainer,
-                  title: Text('channelNew'.tr),
-                  subtitle: Text(
-                    'channelNewInRealmHint'
-                        .trParams({'realm': '#${realm.alias}'}),
-                  ),
-                  onTap: () {
-                    AppRouter.instance
-                        .pushNamed(
-                      'channelOrganizing',
-                      extra: ChannelOrganizeArguments(realm: realm),
-                    )
-                        .then((value) {
-                      if (value != null) onRefresh();
-                    });
-                  },
+          child: Column(
+            children: [
+              ListTile(
+                leading: const Icon(Icons.add_box),
+                contentPadding: const EdgeInsets.only(left: 32, right: 8),
+                tileColor: Theme.of(context).colorScheme.surfaceContainer,
+                title: Text('channelNew'.tr),
+                subtitle: Text(
+                  'channelNewInRealmHint'
+                      .trParams({'realm': '#${realm.alias}'}),
                 ),
+                onTap: () {
+                  AppRouter.instance
+                      .pushNamed(
+                    'channelOrganizing',
+                    extra: ChannelOrganizeArguments(realm: realm),
+                  )
+                      .then((value) {
+                    if (value != null) onRefresh();
+                  });
+                },
               ),
-              ChannelListWidget(
-                channels: channels,
-                selfId: snapshot.data?.body['id'] ?? 0,
-                noCategory: true,
+              Expanded(
+                child: ChannelListWidget(
+                  channels: channels,
+                  selfId: snapshot.data?.body['id'] ?? 0,
+                  noCategory: true,
+                ),
               )
             ],
           ),

lib/widgets/channel/channel_list.dart

@@ -115,28 +115,45 @@ class _ChannelListWidgetState extends State<ChannelListWidget> {
   @override
   Widget build(BuildContext context) {
     if (widget.noCategory) {
-      return SliverList.builder(
-        itemCount: _globalChannels.length,
-        itemBuilder: (context, index) {
-          final element = _globalChannels[index];
-          return buildItem(element);
-        },
+      return CustomScrollView(
+        slivers: [
+          SliverList.builder(
+            itemCount: _globalChannels.length,
+            itemBuilder: (context, index) {
+              final element = _globalChannels[index];
+              return buildItem(element);
+            },
+          ),
+        ],
       );
     }
 
-    return SliverList.list(
-      children: [
-        ..._globalChannels.map((e) => buildItem(e)),
+    return CustomScrollView(
+      slivers: [
+        SliverList.builder(
+          itemCount: _globalChannels.length,
+          itemBuilder: (context, index) {
+            final element = _globalChannels[index];
+            return buildItem(element);
+          },
+        ),
         ..._inRealms.entries.map((element) {
-          return ExpansionTile(
-            tilePadding: const EdgeInsets.symmetric(horizontal: 24),
-            title: Text(element.value.first.realm!.name),
-            subtitle: Text(
-              element.value.first.realm!.description,
-              maxLines: 1,
-              overflow: TextOverflow.ellipsis,
-            ),
-            children: element.value.map((e) => buildItem(e)).toList(),
+          return SliverList.builder(
+            itemCount: element.value.length + 1,
+            itemBuilder: (context, index) {
+              if (index == 0) {
+                return ListTile(
+                  contentPadding: const EdgeInsets.symmetric(horizontal: 28),
+                  leading: const Icon(Icons.workspaces, size: 20)
+                      .paddingOnly(left: 6, right: 10),
+                  tileColor: Theme.of(context).colorScheme.surfaceContainerHigh,
+                  title: Text(element.value.first.realm!.name),
+                );
+              }
+
+              final item = element.value[index - 1];
+              return buildItem(item);
+            },
           );
         }),
       ],