ClassCastException with ListView when executing notifyDataSetChanged

listview header dataset adapter notify
bobetko picture bobetko · Dec 10, 2010 · Viewed 13.7k times · Source

I have added a view to the header of listVivew, 

    View TopSearch =  (View) View.inflate(this, R.layout.search, null);
    lv.addHeaderView(TopSearch, null, false);

And everything is fine until I try to execute (when data changes) 

adapter.notifyDataSetChanged();

That always crash my application giving me following error:

> java.lang.ClassCastException: android.widget.HeaderViewListAdapter

If I remove header view then there is no error. Any suggestions? Thanks.

Answer

Mark Pazon picture Mark Pazon · May 30, 2012

It seems that whenever you use header/footer views in a listview, your ListView gets wrapped with a HeaderViewListAdapter. You can fix this using the below code:

((YourAdapter)((HeaderViewListAdapter)lv.getAdapter()).getWrappedAdapter()).notifyDataSetChanged();

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