used stream on favorites page and fix build error

android/app/src/main/AndroidManifest.xml

@@ -1,5 +1,5 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="dev.jideguru.flutter_ebook_app" xmlns:tools="schemas.android.com/tools">
+    package="dev.jideguru.flutter_ebook_app" xmlns:tools="http://schemas.android.com/tools">
     <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"
         tools:ignore="ScopedStorage" />

lib/database/favorite_helper.dart

@@ -33,6 +33,11 @@ class FavoriteDB {
     return val;
   }
 
+  Future<Stream<List>> listAllStream() async {
+    final db = ObjectDB(FileSystemStorage(await getPath()));
+    return db.find({}).asStream();
+  }
+
   Future<List> check(Map item) async {
     final db = ObjectDB(FileSystemStorage(await getPath()));
     List val = await db.find(item);

lib/view_models/favorites_provider.dart

@@ -1,30 +1,40 @@
+import 'dart:async';
+
 import 'package:flutter/foundation.dart';
 import 'package:flutter_ebook_app/database/favorite_helper.dart';
 
 class FavoritesProvider extends ChangeNotifier {
-  List posts = [];
-  bool loading = true;
+  List favorites = [];
   var db = FavoriteDB();
 
-  getFavorites() async {
-    setLoading(true);
-    posts.clear();
-    List all = await db.listAll();
-    posts.addAll(all);
-    setLoading(false);
+  StreamSubscription<List>? _streamSubscription;
+
+  Future<void> listen() async {
+    if (_streamSubscription != null) {
+      _streamSubscription!.cancel();
+      _streamSubscription = null;
+    }
+    _streamSubscription = (await db.listAllStream()).listen(
+      (books) => favorites = books,
+    );
   }
 
-  void setLoading(value) {
-    loading = value;
+  @override
+  void dispose() {
+    if (_streamSubscription != null) {
+      _streamSubscription!.cancel();
+      _streamSubscription = null;
+    }
+    super.dispose();
+  }
+
+  Future<Stream<List>> getFavoritesStream() async {
+    Stream<List<dynamic>> all = await db.listAllStream();
+    return all;
+  }
+
+  void setFavorites(value) {
+    favorites = value;
     notifyListeners();
   }
-
-  void setPosts(value) {
-    posts = value;
-    notifyListeners();
-  }
-
-  List getPosts() {
-    return posts;
-  }
 }

lib/views/favorites/favorites.dart

@@ -17,17 +17,11 @@ class _FavoritesState extends State<Favorites> {
     getFavorites();
   }
 
-  @override
-  void deactivate() {
-    super.deactivate();
-    getFavorites();
-  }
-
   getFavorites() {
     SchedulerBinding.instance.addPostFrameCallback(
       (_) {
         if (mounted) {
-          Provider.of<FavoritesProvider>(context, listen: false).getFavorites();
+          Provider.of<FavoritesProvider>(context, listen: false).listen();
         }
       },
     );
@@ -45,7 +39,7 @@ class _FavoritesState extends State<Favorites> {
               'Favorites',
             ),
           ),
-          body: favoritesProvider.posts.isEmpty
+          body: favoritesProvider.favorites.isEmpty
               ? _buildEmptyListView()
               : _buildGridView(favoritesProvider),
         );
@@ -79,13 +73,13 @@ class _FavoritesState extends State<Favorites> {
     return GridView.builder(
       padding: EdgeInsets.fromLTRB(10.0, 20.0, 10.0, 0.0),
       shrinkWrap: true,
-      itemCount: favoritesProvider.posts.length,
+      itemCount: favoritesProvider.favorites.length,
       gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
         crossAxisCount: 3,
         childAspectRatio: 200 / 340,
       ),
       itemBuilder: (BuildContext context, int index) {
-        Entry entry = Entry.fromJson(favoritesProvider.posts[index]['item']);
+        Entry entry = Entry.fromJson(favoritesProvider.favorites[index]['item']);
         return Padding(
           padding: EdgeInsets.symmetric(horizontal: 5.0),
           child: BookItem(