How to update a spinner dynamically?

Question

I\'ve been trying to update my spinner in android dynamically but nothing I try has been working.

This is the following code I\'m using to update the spinner.

Answer 1

Change the underlying data and call the notifyDataSetChanged() on adapter.

   list.clear();
  list.add("A");
      list.add("B");
  dataAdapter.notifyDataSetChanged();

Answer 2

Actually, you either have to call clear/add on the adapter, or create and set a new adapter. The adapter does not retain a reference to your list (it is only calling toArray on your list at construction), so there is no way for it to update itself.

dataAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, newStringList);
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinnerCategory.setAdapter(dataAdapter);

Answer 3

You only need to call setAdapter() once and you call adapter.notifyDataSetChanged() to update the data.

Answer 4

Is there a typo or something? Which is the difference between dbAdapter and adapter. If the Spinner has already the adapter, you don't have to re-assign it. More over, the only think you have to do is update the adapter and call notifyDataSetChanged method.

typeList = adapter.getList(); //array list with the values
// change the values, and then
adapter.notifyDataSetChanged();