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Description:

no context navigation

No Context Navigation #
No Context Navigation Package - pub.dev
Instead of using Navigator.of(context).pushNamed or some other method like pop() or pushReplacementNamed() USING context. With this package you don't need to anymore.
This service use a GlobalKey of type NavigatorState which can be used across the entire applicaton.
Now, you only need to this:
navService.pushNamed('/detail_screen', args: 'From Home Screen');
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But first, add the navigationKey to your MaterialApp's navigationKey property:
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
//Over here
navigatorKey: NavigationService.navigationKey,
onGenerateRoute: (RouteSettings settings) {
switch (settings.name) {
case '/':
return MaterialPageRoute(builder: (_) => HomeScreen());
case '/detail_screen':
return MaterialPageRoute(builder: (_) => DetailScreen(message: settings.arguments));
default:
return null;
}
},
);
}
}
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Use navService object to be able to acess those methods:
import 'package:flutter/material.dart';

final NavigationService navService = NavigationService();

class NavigationService<T, U> {
static GlobalKey<NavigatorState> navigationKey = GlobalKey<NavigatorState>();

Future<T> pushNamed(String routeName, {Object args}) async =>
navigationKey.currentState.pushNamed<T>(
routeName,
arguments: args,
);

Future<T> push(Route<T> route) async =>
navigationKey.currentState.push<T>(route);

Future<T> pushReplacementNamed(String routeName, {Object args}) async =>
navigationKey.currentState.pushReplacementNamed<T, U>(
routeName,
arguments: args,
);

Future<T> pushNamedAndRemoveUntil(
String routeName, {
Object args,
bool keepPreviousPages = false,
}) async =>
navigationKey.currentState.pushNamedAndRemoveUntil<T>(
routeName,
(Route<dynamic> route) => keepPreviousPages,
arguments: args,
);

Future<T> pushAndRemoveUntil(
Route<T> route, {
bool keepPreviousPages = false,
}) async =>
navigationKey.currentState.pushAndRemoveUntil<T>(
route,
(Route<dynamic> route) => keepPreviousPages,
);

Future<bool> maybePop([Object args]) async =>
navigationKey.currentState.maybePop<bool>(args);

bool canPop() => navigationKey.currentState.canPop();

void goBack({T result}) => navigationKey.currentState.pop<T>(result);
}
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Hope you enjoy!