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Thursday, February 2, 2023

Flutter: Hide current SnackBar before its duration ends

You can hide the current SnackBar before the end of its duration by using:

ScaffoldMessenger.of(ctx).hideCurrentSnackBar();

This technique is useful in some cases, such as:Advertisements

  • The user wants to dismiss the SnackBar by tapping a button.
  • A new SnackBar needs space to show up.

Example

The sample app we are going to build has a text button. When you press that text button, a snack bar that contains a Dismiss button will show up in the bottom area. If you do nothing, the snack bar will stay there for 30 seconds. To hide it, you can tap the Dismiss button.

Preview:

The complete code in main.dart (with some explanations):

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      // Hide the debug banner
      debugShowCheckedModeBanner: false,
      title: 'Kindacode.com',
      theme: ThemeData.light(),
      home: const HomePage(),
    );
  }
}

class HomePage extends StatelessWidget {
  const HomePage({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: const Text('Kindacode.com'),
        ),
        body: Builder(
          builder: (BuildContext ctx) {
            return SafeArea(
              child: Center(
                child: TextButton(
                  child: const Text('Show SnackBar'),
                  onPressed: () {
                    // show the snackbar
                    ScaffoldMessenger.of(ctx).showSnackBar(SnackBar(
                      content: const Text('Hello there!'),
                      duration: const Duration(seconds: 30),
                      backgroundColor: Colors.black54,
                      action: SnackBarAction(
                        label: 'Dismiss',
                        onPressed: () {
                          // Hide the snackbar before its duration ends
                          ScaffoldMessenger.of(ctx).hideCurrentSnackBar();
                        },
                      ),
                    ));
                  },
                ),
              ),
            );
          },
        ));
  }
}

AdvertisementsHope this helps. Futher reading:

You can also take a tour around our Flutter topic page and Dart topic page to see the latest tutorials and examples.

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