Why can't one add/remove items from an ArrayAdapter?

Question

I am using an ArrayAdapter to populate the items to list in a android.widget.Spinner. That works all fine.

But now I wa

Answer 1

You can try like this:

new ArrayList<>(Arrays.asList(recentlyClient))

Example code how to implement:

String[] recentlyClient;

ArrayAdapter recenAdapter = new ArrayAdapter(MainActivity.this,android.R.layout.simple_list_item_1,new ArrayList<>(Arrays.asList(recentlyClient)));