CODEWITHSUNDEEP
flutter
Hillel Coren
Hillel Coren

Reputation: 439

Show bottomSheet beneath bottomNavigationBar

In our app we're using a bottomSheet along with a bottomNavigationBar.

The bottomSheet appears above the bottomNavigationBar, is there a way to make it appear underneath?

Here's a sample app:

import 'package:flutter/material.dart';

void main() {
  runApp(SampleApp());
}

class SampleApp extends StatefulWidget {
  @override
  _SampleAppState createState() => new _SampleAppState();
}

class _SampleAppState extends State<SampleApp> {
  final _scaffoldKey = GlobalKey<ScaffoldState>();
  PersistentBottomSheetController _sheetController;

  @override
  Widget build(BuildContext context) {
    final _showBottomSheet = () {
      _sheetController = _scaffoldKey.currentState.showBottomSheet((context) {
        return Container(
            color: Colors.grey[200],
            child: Column(mainAxisSize: MainAxisSize.min, children: [
              RadioListTile(dense: true, title: Text('Test'), groupValue: 'test', onChanged: (value) {}, value: true),
              RadioListTile(dense: true, title: Text('Test'), groupValue: 'test', onChanged: (value) {}, value: true),
            ]));
      });
    };

    return MaterialApp(
      home: Scaffold(
        key: _scaffoldKey,
        appBar: AppBar(
          title: Text('Sample App'),
        ),
        bottomNavigationBar: Container(
          child: IconButton(
            icon: Icon(Icons.edit),
            onPressed: _showBottomSheet,
          ),
        ),
      ),
    );
  }
}

Upvotes: 14

Views: 11711

Answers (4)

M Reza Muktasib
M Reza Muktasib

Reputation: 11

USE ScaffoldMessenger instead, Like code below!

onTap: () {
              ScaffoldMessenger.of(context).hideCurrentSnackBar();

              final snackBar = SnackBar(
                backgroundColor: Colors.white,
                padding: EdgeInsets.all(0),
                duration: Duration(days: 365),
                content: Container(
                  height: 120,
                  decoration: BoxDecoration(
                      color: Colors.white,
                      borderRadius: BorderRadius.only(
                        topLeft: Radius.circular(32.0),
                        topRight: Radius.circular(32.0),
                      ),
                      border: Border.all(width: 0.1)),
                ),
              );

              // Find the ScaffoldMessenger in the widget tree
              // and use it to show a SnackBar.
              ScaffoldMessenger.of(context).showSnackBar(snackBar);
            },

Upvotes: 1

Nguyễn Hồng Quang
Nguyễn Hồng Quang

Reputation: 189

add : useRootNavigator: true,

showModalBottomSheet(
      context: context,
      useRootNavigator: true,
      builder: (context) {},
    );

Upvotes: 16

Kostya1375
Kostya1375

Reputation: 119

Noticed your question. Had same problem and found better solution. Use showModalBottomSheet(). It will overlay bottom navigation.

Upvotes: 2

Alexander Ryzhov
Alexander Ryzhov

Reputation: 2920

You can combine your popup with the bottom navigation bar using Column and simulate bottom sheet behavior using Expandable:

import 'package:flutter/material.dart';
import 'package:expandable/expandable.dart';

void main() {
  runApp(SampleApp());
}

class SampleApp extends StatefulWidget {
  @override
  _SampleAppState createState() => new _SampleAppState();
}

class _SampleAppState extends State<SampleApp> {

  @override
  Widget build(BuildContext context) {
    buildBottomSheet() {
      return Container(
          color: Colors.grey[200],
          child: Column(mainAxisSize: MainAxisSize.min, children: [
            RadioListTile(dense: true, title: Text('Test'), groupValue: 'test', onChanged: (value) {}, value: true),
            RadioListTile(dense: true, title: Text('Test'), groupValue: 'test', onChanged: (value) {}, value: true),
          ]));
    }

    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Sample App'),
        ),
        body: Container(
          color: Colors.green,
        ),
        bottomNavigationBar: ExpandableNotifier(
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              ExpandableButton(
                child: SizedBox(height: 50,
                  child: Center(
                    child: Icon(Icons.edit),
                  ),
                ),
              ),
              Expandable(
                expanded: buildBottomSheet(),
              ),
            ],
          ),
        ),
      ),
    );
  }
}

For a production app, consider using SafeArea to add proper padding at the bottom.

Upvotes: 2

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