Add willpopscope to search page

lib/bloc/search/search_bloc.dart

@@ -28,7 +28,7 @@ class SearchBloc extends Bloc<SearchEvent, SearchState> {
         yield SearchError('Something went wrong');
       }
     } else if (event is ReturnToInitialState) {
-
+      yield SearchInitial();
     }
   }
 }

lib/screens/search.dart

@@ -8,33 +8,40 @@ class SearchView extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return BlocListener<SearchBloc, SearchState>(
-      listener: (context, state) {
+        listener: (context, state) {},
-      },
         child: BlocBuilder<SearchBloc, SearchState>(
           builder: (context, state) {
-          if (state is SearchInitial) return _InitialView();
+            if (state is SearchInitial)
-          else if (state is SearchLoading) return LoadingScreen();
+              return _InitialView();
+            else if (state is SearchLoading)
+              return LoadingScreen();
             else if (state is SearchFinished) {
-            return ListView(
+              return WillPopScope(
-              children: state.results.map((result) => SearchResultCard(result)).toList(),
+                child: ListView(
+                  children: state.results
+                      .map((result) => SearchResultCard(result))
+                      .toList(),
+                ),
+                onWillPop: () async {
+                  BlocProvider.of<SearchBloc>(context)
+                      .add(ReturnToInitialState());
+                      print('Popped');
+                  return false;
+                },
               );
             }
+            throw 'No such event found';
           },
-      ) 
+        ));
-    );
   }
 }
 
 class _InitialView extends StatelessWidget {
-
   @override
   Widget build(BuildContext context) {
-    return Column(
+    return Column(mainAxisAlignment: MainAxisAlignment.center, children: [
-      mainAxisAlignment: MainAxisAlignment.center,
-      children: [
       SearchBar(),
-      ]
+    ]);
-    );
   }
 }
 
@@ -53,8 +60,7 @@ class _LanguageOption extends StatelessWidget {
               color: Colors.black,
               width: 1.0,
             ),
-          color: _color
+            color: _color),
-        ),
       ),
     );
   }
@@ -70,7 +76,8 @@ class SearchBar extends StatelessWidget {
       child: Column(
         children: [
           TextField(
-            onSubmitted: (text) => BlocProvider.of<SearchBloc>(context).add(GetSearchResults(text)),
+            onSubmitted: (text) => BlocProvider.of<SearchBloc>(context)
+                .add(GetSearchResults(text)),
             controller: TextEditingController(),
             decoration: InputDecoration(
               labelText: 'Search',