How can I be notified when a Snackbar has dismissed itself?

Question

I\'m using a Snackbar from the com.android.support:design:22.2.0 library. I\'m using it to undo deletions. To make my life easier, I\'m going to make the UI loo

Answer 1

Thanks to @SergeyMilakov in Kotlin it is:

@SuppressLint("WrongConstant") // Suppress an error when set duration.
private fun showSnackbar() {
    val DURATION = 5000

    Snackbar.make(view!!, "Remove item?"), DURATION).apply {
        setAction("Undo") {
            // Your action when a button is clicked.
        }
        addCallback(object : BaseTransientBottomBar.BaseCallback() {
            /* override fun onShown(transientBottomBar: Snackbar?) {
                super.onShown(transientBottomBar)
                Timber.d("*** onShown")
            }*/

            override fun onDismissed(transientBottomBar: Snackbar?, event: Int) {
                super.onDismissed(transientBottomBar, event)
                if (event != Snackbar.Callback.DISMISS_EVENT_ACTION) {
                    // Your action when the Snackbar is closed and the button was not clicked.
                }

            }
        })
        view.setBackgroundColor(ContextCompat.getColor(context, R.color.black))
        setActionTextColor(ContextCompat.getColor(context, R.color.yellow))
        show()
    }
}

Note that Snackbar shows, even if you move to other screens (for instance, back). So, don't forget to check whether you make actions on the right screen.

Also Snackbar doesn't restore after screen rotation.