Fix moor_flutter example

moor_flutter/example/lib/bloc.dart

@@ -19,14 +19,14 @@ class TodoAppBloc {
   final BehaviorSubject<Category> _activeCategory =
       BehaviorSubject.seeded(null);
 
-  Observable<List<EntryWithCategory>> _currentEntries;
+  Stream<List<EntryWithCategory>> _currentEntries;
 
   /// A stream of entries that should be displayed on the home screen.
-  Observable<List<EntryWithCategory>> get homeScreenEntries => _currentEntries;
+  Stream<List<EntryWithCategory>> get homeScreenEntries => _currentEntries;
 
   final BehaviorSubject<List<CategoryWithActiveInfo>> _allCategories =
       BehaviorSubject();
-  Observable<List<CategoryWithActiveInfo>> get categories => _allCategories;
+  Stream<List<CategoryWithActiveInfo>> get categories => _allCategories;
 
   TodoAppBloc() : db = Database() {
     // listen for the category to change. Then display all entries that are in
@@ -35,7 +35,7 @@ class TodoAppBloc {
 
     // also watch all categories so that they can be displayed in the navigation
     // drawer.
-    Observable.combineLatest2<List<CategoryWithCount>, Category,
+    Rx.combineLatest2<List<CategoryWithCount>, Category,
         List<CategoryWithActiveInfo>>(
       db.categoriesWithCount(),
       _activeCategory,

moor_flutter/example/lib/database/database.dart

@@ -126,7 +126,7 @@ class Database extends _$Database {
       return rows.map((row) {
         return EntryWithCategory(
           row.readTable(todos),
-          row.readTable(categories),
+          row.readTableOrNull(categories),
         );
       }).toList();
     });

moor_flutter/example/lib/database/database.g.dart

@@ -503,9 +503,9 @@ abstract class _$Database extends GeneratedDatabase {
         variables: [],
         readsFrom: {categories, todos}).map((QueryRow row) {
       return CategoriesWithCountResult(
-        id: row.readInt('id'),
-        desc: row.readString('desc'),
-        amount: row.readInt('amount'),
+        id: row.read<int>('id'),
+        desc: row.read<String>('desc'),
+        amount: row.read<int>('amount'),
       );
     });
   }

moor_flutter/example/lib/widgets/add_category_dialog.dart

@@ -50,7 +50,8 @@ class _AddCategoryDialogState extends State<AddCategoryDialog> {
 
   void _addEntry() {
     if (_controller.text.isNotEmpty) {
-      Provider.of<TodoAppBloc>(context).addCategory(_controller.text);
+      Provider.of<TodoAppBloc>(context, listen: false)
+          .addCategory(_controller.text);
       Navigator.of(context).pop();
     }
   }

moor_flutter/example/lib/widgets/categories_drawer.dart

@@ -101,7 +101,7 @@ class _CategoryDrawerEntry extends StatelessWidget {
                   title: const Text('Delete'),
                   content: Text('Really delete category $title?'),
                   actions: <Widget>[
-                    FlatButton(
+                    TextButton(
                       child: const Text('Cancel'),
                       onPressed: () {
                         Navigator.pop(context, false);

moor_flutter/example/lib/widgets/homescreen.dart

@@ -21,7 +21,7 @@ class HomeScreenState extends State<HomeScreen> {
   // been added
   final TextEditingController controller = TextEditingController();
 
-  TodoAppBloc get bloc => Provider.of<TodoAppBloc>(context);
+  TodoAppBloc get bloc => Provider.of<TodoAppBloc>(context, listen: false);
 
   @override
   Widget build(BuildContext context) {
@@ -33,6 +33,8 @@ class HomeScreenState extends State<HomeScreen> {
       body: StreamBuilder<List<EntryWithCategory>>(
         stream: bloc.homeScreenEntries,
         builder: (context, snapshot) {
+          print(snapshot);
+
           if (!snapshot.hasData) {
             return const Align(
               alignment: Alignment.center,

moor_flutter/example/pubspec.yaml

@@ -10,14 +10,14 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  provider: ^3.2.0
-  intl: ^0.16.0
-  rxdart: 0.21.0
-  moor_flutter: ^3.0.0
+  provider: ^5.0.0
+  intl: ^0.17.0
+  rxdart: ^0.26.0
+  moor_flutter: ^4.0.0
 
 dev_dependencies:
   build_runner:
-  moor_generator: ^3.2.0
+  moor_generator: ^4.0.0
   flutter_test:
     sdk: flutter