Create a notification with a snackbar

The snackbar component serves as a brief notification that appears at the bottom of the screen. It provides feedback about an operation or action without interrupting the user experience. Snackbars disappear after a few seconds. The user can also dismiss them with an action, such as tapping a button.

Consider these three use cases where you might use a snackbar:

• Action confirmation: After a user deletes an email or message, a snackbar appears to confirm the action and offer an "Undo" option.
• Network status: When the app loses its internet connection, a snackbar pops up to note that it is now offline.
• Data submission: Upon successfully submitting a form or updating settings, a snackbar notes that the change has saved successfully.

Version compatibility

This implementation requires that your project minSDK be set to API level 21 or higher.

Dependencies

Create a basic snackbar

To implement a snackbar, you first create SnackbarHost, which includes a SnackbarHostState property. SnackbarHostState provides access to the showSnackbar() function which you can use to display your snackbar.

This suspending function requires a CoroutineScope such as with using rememberCoroutineScope — and can be called in response to UI events to show a Snackbar within Scaffold.

Create a snackbar with action

You can provide an optional action and adjust the duration of the Snackbar. The snackbarHostState.showSnackbar() function accepts additional actionLabel and duration parameters, and returns a SnackbarResult.

You can provide a custom Snackbar with the snackbarHost parameter. See the SnackbarHost API reference docs for more information.

Results

Collections that contain this guide

This guide is part of these curated Quick Guide collections that cover broader Android development goals:

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