Android: AutoCompleteTextView show suggestions when no text entered

Question

I am using AutoCompleteTextView, when the user clicks on it, I want to show suggestions even if it has no text - but setThreshold(0) works exactly

Answer 1

The adapter does not perform filtering initially.
When the filtering is not performed, the dropdown list is empty.
so you might have to get the filtering going initially.

To do so, you can invoke filter() after you finish adding the entries:

adapter.add("a1");
adapter.add("a2");
adapter.add("a3");
adapter.getFilter().filter(null);