Question

I get a null pointer exception at line five/seven of my code:

    LayoutInflater inflater = getLayoutInflater();
    View header = inflater.inflate(R.layout.footer_row, (ViewGroup) findViewById(R.id.header_layout_root));
    TextView tv_footer = (TextView) findViewById(R.id.tv_footertext);
    if(getListView().getCount()<=8) {
        tv_footer.setText("You have no more assignments");
    } else {
        tv_footer.setText(Integer.toString(getListView().getCount()) + " assignments shown");
    }
    getListView().addFooterView(header, null, false);

I’m not too sure why, so could you tell me? List view’s aren’t my thing.

I’ll tick the right answer!

Answer 1

Instead of using the findViewById() method from your Activity‘s View you should assign (which I assume is the footer TextView in your R.layout.footer_row) the TextView from the inflated View.

Sample code:

TextView tv_footer = (TextView) header.findViewById(R.id.tv_footertext);