Add an action to a message

Try the Compose way
Jetpack Compose is the recommended UI toolkit for Android. Learn how to add notifications in Compose.
Snackbar →

You can add an action to a Snackbar to let the user respond to your message. When you do this, the Snackbar puts a button next to the message text, and the user can trigger your action by tapping the button. For example, an email app might put an undo button on its "email archived" message. If the user taps the undo button, the app takes the email back out of the archive.

Snackbar notification with an UNDO action button
Figure 1. A Snackbar with an undo action button that restores a removed item.

To add an action to a Snackbar message, define a listener object that implements the View.OnClickListener interface. The system calls your listener's onClick() method if the user taps the message action. For example, this snippet shows a listener for an undo action:

class MyUndoListener : View.OnClickListener {

    override fun onClick(v: View) {
        // Code to undo the user's last action.
    }
}

Use one of the setAction() methods to attach the listener to your Snackbar. Attach the listener before you call show(), as shown in this code sample:

val mySnackbar = Snackbar.make(
    findViewById(R.id.myCoordinatorLayout),
    R.string.email_archived,
    Snackbar.LENGTH_SHORT
)
mySnackbar.setAction(R.string.undo_string, MyUndoListener())
mySnackbar.show()
 If you are using Jetpack Compose, you can show a SnackbarHost, as shown in the following example: 
override fun onCreate(savedInstanceState: Bundle?) {

    super.onCreate(savedInstanceState)

    setContent {
        DACPlaygroundTheme {
            val snackbarHostState = remember { SnackbarHostState() }
            val scope = rememberCoroutineScope()
            Scaffold(
                snackbarHost = { SnackbarHost(snackbarHostState) },
                content = { padding ->
                    Button(
                        modifier = Modifier.padding(padding),
                        onClick = {
                            scope.launch {
                                snackbarHostState.showSnackbar(
                                    message = "1 item removed",
                                    actionLabel = "UNDO",
                                    duration = SnackbarDuration.Short
                                ).run {
                                    when (this) {
                                        Dismissed -> Log.d("SNACKBAR", "Dismissed")
                                        ActionPerformed -> Log.d("SNACKBAR", "UNDO CLICKED")
                                    }
                                }
                            }
                        }
                    ) { Text("Show snackbar") }
                }
            )
        }
    }
}