Question

I want to know when my listview has no adapter set on it. I mean, is there a way to know when I have called setListAdapter(mAdapter); without a condition on my code?

I want to add a header to my listview, but just the first time as:

if(getListView().getAdapter() != null){
    WWDisplayUtils.addHeaderButton(mTaxis, mAirport, AirportDetailsTaxi.this);
    setListAdapter(mTaxiA);
}
else    
   mTaxiA.notifyDataSetChanged();

But is not doing what I want.

Answer 1

Shouldn’t

if(getListView().getAdapter() != null)

be

if(getListView().getAdapter() == null)

If you’ve already set a header or footer view, getAdapter() will return a WrapperListAdapter instead of the one you set with setListAdapter()