Flutter Receive sharing intent and page change - flutter

Question

I'm working on a mailing application and i'm stuck when i try to share a file to send it by email with the receive_sharing_intent package
I'm able to get the file in the application with it's path and all, but then i need to redirect the user to the mail editor page. When i try to use this to get to the mailEditor page :
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => MailEditor(
message: message,
editorType: 'new',
),
),
);
I get this error :
[ERROR:flutter/shell/common/shell.cc(213)] Dart Error: Unhandled exception:
Navigator operation requested with a context that does not include a Navigator.
The context used to push or pop routes from the Navigator must be that of a widget that is a descendant of a Navigator widget.
This package being developed by the community i couldn't find much help anywhere on the internet.
I failed to use the ReceiveSharingIntent method anywhere else than the main.dart file, so maybe there's a way to use it directly on my mailEditor page that i didn't find?
If more code is needed here is my ReceiveSharingIntent method :
class MyApp extends StatefulWidget {
// This widget is the root of your application.
#override
_MssProState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
#override
void dispose() {
_intentDataStreamSubscription.cancel();
super.dispose();
}
#override
Widget build(BuildContext context) {
// For sharing images coming from outside the app while the app is in the memory
_intentDataStreamSubscription = ReceiveSharingIntent.getMediaStream().listen((List<SharedMediaFile> value) {
_sharedFiles = value;
Message message = Message();
for (var i = 0; i < _sharedFiles.length; i++) {
File file = File(_sharedFiles[i].path);
Attachment attachment = Attachment(
fileName: basename(file.path),
attachmentPart: i + 1,
contentType: lookupMimeType(file.path),
name: basename(file.path),
);
}
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => MailEditor(
message: message,
editorType: 'new',
),
),
);
});
return MaterialApp(
debugShowCheckedModeBanner: false,
home: Login(),
routes: {
'/login': (BuildContext context) => Login(),
},
);
}
Thanks a lot for any help and suggestions, i've been stuck on this for a while.
Edit:
Added more code for context

Answer 1

Navigator should be used inside the build() method. If you want to use context outside of it, pass it as an argument like BuildContext context.