fix: Add back button on app bars of secondary views

lib/ui/views/app_selector/app_selector_view.dart

@@ -37,12 +37,29 @@ class _AppSelectorViewState extends State<AppSelectorView> {
               pinned: true,
               floating: true,
               snap: false,
-              title: I18nText('appSelectorView.viewTitle'),
+              title: I18nText(
+                'appSelectorView.viewTitle',
+                child: Text(
+                  '',
+                  style: TextStyle(
+                    color: Theme.of(context).textTheme.headline6!.color,
+                  ),
+                ),
+              ),
+              leading: IconButton(
+                icon: Icon(
+                  Icons.arrow_back,
+                  color: Theme.of(context).textTheme.headline6!.color,
+                ),
+                onPressed: () => Navigator.of(context).pop(),
+              ),
               bottom: PreferredSize(
                 preferredSize: const Size.fromHeight(64.0),
                 child: Padding(
                   padding: const EdgeInsets.symmetric(
-                      vertical: 8.0, horizontal: 12.0),
+                    vertical: 8.0,
+                    horizontal: 12.0,
+                  ),
                   child: SearchBar(
                     showSelectIcon: false,
                     hintText: FlutterI18n.translate(
@@ -66,8 +83,8 @@ class _AppSelectorViewState extends State<AppSelectorView> {
                   : model.apps.isEmpty
                       ? const AppSkeletonLoader()
                       : Padding(
-                          padding: const EdgeInsets.only(bottom: 80).add(
+                          padding: const EdgeInsets.symmetric(horizontal: 12.0)
-                              const EdgeInsets.symmetric(horizontal: 12.0)),
+                              .copyWith(bottom: 80),
                           child: Column(
                             children: model
                                 .getFilteredApps(_query)

lib/ui/views/home/home_view.dart

@@ -28,6 +28,7 @@ class HomeView extends StatelessWidget {
           child: CustomScrollView(
             slivers: <Widget>[
               CustomSliverAppBar(
+                isMainView: true,
                 title: I18nText(
                   'homeView.widgetTitle',
                   child: Text(

lib/ui/views/patcher/patcher_view.dart

@@ -28,6 +28,7 @@ class PatcherView extends StatelessWidget {
         body: CustomScrollView(
           slivers: <Widget>[
             CustomSliverAppBar(
+              isMainView: true,
               title: I18nText(
                 'patcherView.widgetTitle',
                 child: Text(

lib/ui/views/patches_selector/patches_selector_view.dart

@@ -39,12 +39,29 @@ class _PatchesSelectorViewState extends State<PatchesSelectorView> {
               pinned: true,
               floating: true,
               snap: false,
-              title: I18nText('patchesSelectorView.viewTitle'),
+              title: I18nText(
+                'patchesSelectorView.viewTitle',
+                child: Text(
+                  '',
+                  style: TextStyle(
+                    color: Theme.of(context).textTheme.headline6!.color,
+                  ),
+                ),
+              ),
+              leading: IconButton(
+                icon: Icon(
+                  Icons.arrow_back,
+                  color: Theme.of(context).textTheme.headline6!.color,
+                ),
+                onPressed: () => Navigator.of(context).pop(),
+              ),
               bottom: PreferredSize(
                 preferredSize: const Size.fromHeight(64.0),
                 child: Padding(
                   padding: const EdgeInsets.symmetric(
-                      vertical: 8.0, horizontal: 12.0),
+                    vertical: 8.0,
+                    horizontal: 12.0,
+                  ),
                   child: SearchBar(
                     showSelectIcon: true,
                     hintText: FlutterI18n.translate(
@@ -76,8 +93,8 @@ class _PatchesSelectorViewState extends State<PatchesSelectorView> {
                       ),
                     )
                   : Padding(
-                      padding: const EdgeInsets.only(bottom: 80)
+                      padding: const EdgeInsets.symmetric(horizontal: 12.0)
-                          .add(const EdgeInsets.symmetric(horizontal: 12.0)),
+                          .copyWith(bottom: 80),
                       child: Column(
                         children: model
                             .getQueriedPatches(_query)

lib/ui/views/settings/settings_view.dart

@@ -24,6 +24,7 @@ class SettingsView extends StatelessWidget {
         body: CustomScrollView(
           slivers: <Widget>[
             CustomSliverAppBar(
+              isMainView: true,
               title: I18nText(
                 'settingsView.widgetTitle',
                 child: Text(

lib/ui/widgets/shared/custom_sliver_app_bar.dart

@@ -4,12 +4,14 @@ class CustomSliverAppBar extends StatelessWidget {
   final Widget title;
   final List<Widget>? actions;
   final PreferredSizeWidget? bottom;
+  final bool isMainView;
 
   const CustomSliverAppBar({
     Key? key,
     required this.title,
     this.actions,
     this.bottom,
+    this.isMainView = false,
   }) : super(key: key);
 
   @override
@@ -19,16 +21,28 @@ class CustomSliverAppBar extends StatelessWidget {
       snap: false,
       floating: false,
       expandedHeight: 100.0,
-      automaticallyImplyLeading: false,
+      automaticallyImplyLeading: !isMainView,
+      flexibleSpace: FlexibleSpaceBar(
+        titlePadding: EdgeInsets.only(
+          bottom: 14.0,
+          left: isMainView ? 20.0 : 55.0,
+        ),
+        title: title,
+      ),
+      leading: isMainView
+          ? null
+          : IconButton(
+              icon: Icon(
+                Icons.arrow_back,
+                color: Theme.of(context).textTheme.headline6!.color,
+              ),
+              onPressed: () => Navigator.of(context).pop(),
+            ),
       backgroundColor: MaterialStateColor.resolveWith(
         (states) => states.contains(MaterialState.scrolledUnder)
             ? Theme.of(context).colorScheme.surface
             : Theme.of(context).canvasColor,
       ),
-      flexibleSpace: FlexibleSpaceBar(
-        titlePadding: const EdgeInsets.only(bottom: 16.0, left: 20.0),
-        title: title,
-      ),
       actions: actions,
       bottom: bottom,
     );