private val snackProgressBarManager by lazy { SnackProgressBarManager(mainLayout, lifecycleOwner = this) }

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_demo)
    val floatingActionButton = findViewById<View>(R.id.fab)
    snackProgressBarManager
        // (Optional) Set the view which will animate with SnackProgressBar e.g. FAB when CoordinatorLayout is not used
        .setViewToMove(floatingActionButton)
        // (Optional) Change progressBar color, default = R.color.colorAccent
        .setProgressBarColor(R.color.colorAccent)
        // (Optional) Change background color, default = BACKGROUND_COLOR_DEFAULT (#FF323232)
        .setBackgroundColor(SnackProgressBarManager.BACKGROUND_COLOR_DEFAULT)
        // (Optional) Change text size, default = 14sp
        .setTextSize(14f)
        // (Optional) Set max lines, default = 2
        .setMessageMaxLines(2)
        // (Optional) Register onDisplayListener
        .setOnDisplayListener(object : SnackProgressBarManager.OnDisplayListener {
            override fun onLayoutInflated(
                snackProgressBarLayout: SnackProgressBarLayout,
                overlayLayout: FrameLayout,
                snackProgressBar: SnackProgressBar,
                onDisplayId: Int
            ) {
                // In v6.0, both snackProgressBarLayout and overlayLayout are exposed.
                // You can edit them directly without reflection.
            }

            override fun onShown(snackProgressBar: SnackProgressBar, onDisplayId: Int) {
                // We have assigned onDisplayId = 5000 for normalType SnackProgressBar
                if (onDisplayId == 5000) {
                    // You can retrieve the attached information here
                    val bundle = snackProgressBar.getBundle()
                    if (bundle != null) {
                        val queueNo = bundle.getInt("queue")
                        val toast = "Showing queue $queueNo!"
                        Toast.makeText(applicationContext, toast, Toast.LENGTH_SHORT).show()
                    }
                }
            }

            override fun onDismissed(snackProgressBar: SnackProgressBar, onDisplayId: Int) {
                // Do something
            }
        })
}  

// TYPE_NORMAL
val normalType =
    SnackProgressBar(SnackProgressBar.TYPE_NORMAL, "TYPE_NORMAL - $queue")
        // (Optional) allow user input, default = FALSE
        .setAllowUserInput(true)
        // (Optional) allow user swipe to dismiss, default = FALSE
        .setSwipeToDismiss(true)
        // (Optional) set icon
        .setIconResource(R.mipmap.ic_launcher)
// Create a bundle and attach to snackProgressBar which can be retrieved via OnDisplayListener
val bundle = Bundle()
bundle.putInt("queue", queue)
normalType.putBundle(bundle)

// TYPE_NORMAL with action
val normalTypeWithAction =
    SnackProgressBar(
        SnackProgressBar.TYPE_NORMAL,
        "TYPE_NORMAL - If the message and action are too long, a higher layout is used."
    ).setAction("LONG ACTION TEXT", object : SnackProgressBar.OnActionClickListener {
        // (Required) Set action button
        override fun onActionClick() {
            Toast.makeText(applicationContext, "Action Clicked!", Toast.LENGTH_SHORT).show()
        }
    })

// TYPE_HORIZONTAL
val horizontalType =
    SnackProgressBar(SnackProgressBar.TYPE_HORIZONTAL, "TYPE_HORIZONTAL - Loading...")
        // (Optional) Set the type of progressBar, default = FALSE
        .setIsIndeterminate(false)
        // (Optional) Set max progress, default = 100
        .setProgressMax(100)
        // (Optional) Show percentage, default = FALSE
        .setShowProgressPercentage(true)

// TYPE_CIRCULAR with action
// This type of layout is not recommended, simply because it is ugly.
val circularTypeWithAction =
    SnackProgressBar(SnackProgressBar.TYPE_CIRCULAR, "TYPE_CIRCULAR - Loading...")
        .setIsIndeterminate(true)
        .setAction("DISMISS", object : SnackProgressBar.OnActionClickListener {
            override fun onActionClick() {
                Toast.makeText(applicationContext, "Action Clicked!", Toast.LENGTH_SHORT).show()
            }
        })

// LENGTH_SHORT, LENGTH_LONG, LENGTH_INDEFINITE or other positive millis can be used
snackProgressBarManager.show(snackProgressBar, SnackProgressBarManager.LENGTH_LONG)

val onDisplayId = 100
snackProgressBarManager.show(snackProgressBar, SnackProgressBarManager.LENGTH_LONG, onDisplayId)

// It is stored in HashMap, so storeId must be unique for each SnackProgressBar, else it will be overwritten
val storeId = 100
snackProgressBarManager.put(snackProgressBar, storeId)
snackProgressBarManager.show(storeId, SnackProgressBarManager.LENGTH_LONG)

// Get the currently showing indeterminateType and change the message
val snackProgressBar = snackProgressBarManager.getLastShown()
snackProgressBar.setMessage("new message")
// Calling updateTo() will not hide and show again the SnackProgressBar
snackProgressBarManager.updateTo(snackProgressBar)