CODEWITHSUNDEEP
dartflutter
Bram Vanbilsen
Bram Vanbilsen

Reputation: 6505

How to use multiple navigators

I currently have a MaterialApp in my flutter application which makes the use of the Navigator extremely easy, which is great. But, I'm now trying to figure out how to create more navigators for particular views/widgets. For example I've got a custom tab bar with another widget/view in. I'd now like that widget/view to have it's own navigation stack. So the goal is to keep the tab bar at the top while I navigate to other pages from within my widget/view.
This question is almost exactly this: Permanent view with navigation bar in Flutter but in that code, there is no MaterialApp yet. Nesting MaterialApps give funky results and I don't believe that that would be a solution.
enter image description here

Any ideas?

Upvotes: 5

Views: 10083

Answers (2)

Ershat
Ershat

Reputation: 76

you could give first material app's context to secondary material app;
and in secondary material app ,when you need to go back first material app,
you could check whether the secondary app can pop, with this line:

 Navigator.of(secondaryContext).canPop()

if true, then you could keep using,else use first material app's context,
like this:

Navigator.of(parentContext).pop();

otherwise

Upvotes: 0

German Saprykin
German Saprykin

Reputation: 6951

You can create new Navigator for each page. As a reference check CupertinoTabView

Or simple example:

import 'package:flutter/material.dart';

class Home extends StatelessWidget {
  Navigator _getNavigator(BuildContext context) {
    return new Navigator(
      onGenerateRoute: (RouteSettings settings) {
        return new MaterialPageRoute(builder: (context) {
          return new Center(
            child: new Column(
              mainAxisSize: MainAxisSize.min,
              children: <Widget>[
                new Text(settings.name),
                new FlatButton(
                  onPressed: () =>
                      Navigator.pushNamed(context, "${settings.name}/next"),
                  child: new Text('Next'),
                ),
                new FlatButton(
                  onPressed: () =>
                      Navigator.pop(context),
                  child: new Text('Back'),
                ),
              ],
            ),
          );
        });
      },
    );
  }

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      body: new Column(
        children: <Widget>[
          new Expanded(
            child: _getNavigator(context),
          ),
          new Expanded(
            child: _getNavigator(context),
          ),
        ],
      ),
    );
  }
}

void main() {
  runApp(new MaterialApp(
    home: new Home(),
  ));
}

Screenshot

Upvotes: 8

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