How to clear an Android ListView and populate it with new data?

Question

I have a spinner and a listview in the same Activity. The listview is loaded with a list of items. i want when user clicks on the item from spinner the listview will be clear and new listview will load according to item chooses in spinner

    setListAdapter(new ArrayAdapter<String>(this, R.layout.listviewxml, video));

       ListView lv=getListView();

       lv.setTextFilterEnabled(true);

Please tell how to do this?

i am not able to clear the listview

Answer 1

If you have passed a List or an Array to the Adapter, then

// Clear collection..
collection.clear();
// Add data to collection..
collection.add();
// Refresh your listview..
listview.getAdapter().notifyDataSetChanged();

(These codes are like pseudo code, your syntax may vary)

Answer 2

When a new item is chosen in your Spinner use on your ListView adapter :

    //Clear existing items
    listAdapter.clear();
    //Add new items
    listAdapter.addAll(collectionOfItems);
    //Notify that the data has changed
    listAdapter.notifyDataSetChanged();

Answer 3

You could just try setting a null adapter to the listview. So you could just do :

    lv.setadapter(null);