when is Snackbar isQueued () used? (How to queue the snackbar)

Question

If i call the snackbar multiple times in a row, only the last snackbar item is displayed.

e.g. with the codes below, only Item 3 would be shown. it seems that Snackbar.LENGTH_LONG is ignored (and set to zero?) for item 1 and 2.

Snackbar.make(view, "Item 1", Snackbar.LENGTH_LONG).show();
Snackbar.make(view, "Item 2", Snackbar.LENGTH_LONG).show();
Snackbar.make(view, "Item 3", Snackbar.LENGTH_LONG).show();

yet in the google documents, I see that it is possible to queue the messages.

public boolean isShownOrQueued ()

Returns whether this Snackbar is currently being shown,
or is queued to be shown next.

so how do we actually queue the snackbar?

Answer 1

Here is a partial snippet that solves your problem, although it might not be the correct way to go about things:

//using a queue to pass string to the snackbar
Queue<String> myQueue = new LinkedList<String>();
myQueue.offer("item 1");
myQueue.offer("item 2");
myQueue.offer("item 3");
displaysnack(myQueue, view);

public void displaysnack(final Queue dQueue, final View view){
    Snackbar.make(view, (String)dQueue.poll(), Snackbar.LENGTH_LONG).setCallback(new Snackbar.Callback() {
        @Override
        public void onDismissed(Snackbar snackbar, int event) {
            switch (event) {
                case Snackbar.Callback.DISMISS_EVENT_ACTION:
                    Toast.makeText(getApplicationContext(), "Clicked the action", Toast.LENGTH_LONG).show();
                    break;
                //once the timeout expires, display the next one in the queue.
                case Snackbar.Callback.DISMISS_EVENT_TIMEOUT:
                    Toast.makeText(getApplicationContext(), "Showing: "+ (dQueue.size()), Toast.LENGTH_SHORT).show();
                    if (dQueue.size()>0){displaysnack(dQueue, view);}
                    break;
                case Snackbar.Callback.DISMISS_EVENT_CONSECUTIVE:
                    //Toast.makeText(getApplicationContext(), "Multiple Shown", Toast.LENGTH_SHORT).show();
                    break;
            }
        }

Answer 2

I also needed to implement a queue of snackbars but did not find ready solution. So I decided to implement it on my own. You can try it https://github.com/AntonyGolovin/FluentSnackbar.

Just call important() on Builder and it will be added to the queue.