to make it simple, I'm creating a dashboard where I have a Drawer
on the left side of the screen and Another widget that will change based on what the user will choose from Drawer. Anyway, After adding the onPressed
for a menu item, when I press to re-call a new widget next to the drawer I'm getting this error:
Could not find the correct provider<MenuController$> above MainScreen Widget.
So first this is my main.dart
:
import 'package:admin/constants.dart';
import 'package:admin/controllers/MenuController.dart';
import 'package:admin/screens/dashboard/dashboard_screen.dart';
import 'package:admin/screens/main/main_screen.dart';
import 'package:flutter/material.dart';
import 'package:google_fonts/google_fonts.dart';
import 'package:provider/provider.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatefulWidget {
@override
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
title: 'Flutter Admin Panel',
theme: ThemeData.dark().copyWith(
scaffoldBackgroundColor: bgColor,
textTheme: GoogleFonts.poppinsTextTheme(Theme.of(context).textTheme)
.apply(bodyColor: Colors.white),
canvasColor: secondaryColor,
),
home: MultiProvider(
providers: [
ChangeNotifierProvider(
create: (context) => MenuController(),
),
],
child: MainScreen(DashboardScreen()),,
),
);
}
}
and this is my MenuController
:
import 'package:flutter/material.dart';
class MenuController extends ChangeNotifier {
final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
GlobalKey<ScaffoldState> get scaffoldKey => _scaffoldKey;
void controlMenu() {
if (!_scaffoldKey.currentState.isDrawerOpen) {
_scaffoldKey.currentState.openDrawer();
}
}
}
and this is my main_screen
:
import 'package:admin/controllers/MenuController.dart';
import 'package:admin/responsive.dart';
import 'package:admin/screens/dashboard/dashboard_screen.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'components/side_menu.dart';
class MainScreen extends StatefulWidget {
Widget newWidget;
MainScreen(this.newWidget);
@override
State<MainScreen> createState() => _MainScreenState();
}
class _MainScreenState extends State<MainScreen> {
@override
Widget build(BuildContext context) {
return Scaffold(
key: context.read<MenuController>().scaffoldKey,
drawer: SideMenu(),
body: SafeArea(
child: Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
// We want this side menu only for large screen
if (Responsive.isDesktop(context))
Expanded(
// default flex = 1
// and it takes 1/6 part of the screen
child: SideMenu(),
),
Expanded(
// It takes 5/6 part of the screen
flex: 5,
child: DashboardScreen(),
),
],
),
),
);
}
}
and finally this is my side_menu
:
DrawerListTile(
title: "Fournisseurs",
svgSrc: "assets/icons/menu_tran.svg",
subTitle1: 'Ajouter Un Fournisseur',
subTitle2: 'Liste Des Fournisseurs',
subTitle3: '---------',
press1: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => MainScreen(Text('Hello'))),
);
},
After clicking on this in my Drawer
I'm getting the error listed above.
As the error states, the correct provider isn't found above the MainScreen Widget.
See if it helps to structure your main.dart like this:
import 'package:admin/constants.dart';
import 'package:admin/controllers/MenuController.dart';
import 'package:admin/screens/dashboard/dashboard_screen.dart';
import 'package:admin/screens/main/main_screen.dart';
import 'package:flutter/material.dart';
import 'package:google_fonts/google_fonts.dart';
import 'package:provider/provider.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatefulWidget {
@override
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MultiProvider(
providers: [
ChangeNotifierProvider(
create: (context) => MenuController(),
),
],
child: MaterialApp(
debugShowCheckedModeBanner: false,
title: 'Flutter Admin Panel',
theme: ThemeData.dark().copyWith(
scaffoldBackgroundColor: bgColor,
textTheme: GoogleFonts.poppinsTextTheme(Theme.of(context).textTheme)
.apply(bodyColor: Colors.white),
canvasColor: secondaryColor,
),
home: MainScreen(DashboardScreen()),
),
);
}
}
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