Null Pointer Exception ListAdapter

Question

I'm getting a null pointer exception on the following code. Any idea why?

public class TweetAdapter extends ArrayAdapter<Tweet>{

    private LayoutInflater inflater;
    private Context context;
    private List<Tweet> values;

    public TweetAdapter(Activity activity, List<Tweet> tweets){
        super(activity, R.layout.row_tweet, tweets);
        inflater = activity.getWindow().getLayoutInflater();

        context = this.getContext();
        values = tweets;
    }

    @SuppressLint("ViewHolder") @Override
    public View getView(int position, View convertView, ViewGroup parent){
        LayoutInflater inflater = (LayoutInflater)  context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View rowView = inflater.inflate(R.layout.row_tweet, parent, false);
//The exception is here
        TextView headerView = (TextView) rowView.findViewById(R.id.header);
        TextView bodyView = (TextView) rowView.findViewById(R.id.tweetBody);
        headerView.setText(values.get(position).getTitle());
        bodyView.setText(values.get(position).getBody());
        return rowView;
    }

}

Thanks, Tom

If it helps there is a similar question here: CodeLearn Twitter Tutorial nullpointer error on TweetAdapter.java (however I couldn't get this fix to work)

at which line do you get the error? – Tator Jun 16 '15 at 07:37 — Tator, Jun 16 '15 at 07:37
you never assign tweets to values – Blackbelt Jun 16 '15 at 07:38 — Blackbelt, Jun 16 '15 at 07:38
@Blackbelt Thanks, but didn't fix the issue – Thomas Williams Jun 16 '15 at 08:17 — Thomas Williams, Jun 16 '15 at 08:17
@MD The logcat gave a NullPointerExeption error at line 42 – Thomas Williams Jun 16 '15 at 08:18 — Thomas Williams, Jun 16 '15 at 08:18
@MatthiasG Line 42 (there is a comment in the code) – Thomas Williams Jun 16 '15 at 08:19 — Thomas Williams, Jun 16 '15 at 08:19
`activity.getLayoutInflater()` is enough – Blackbelt Jun 16 '15 at 08:22 — Blackbelt, Jun 16 '15 at 08:22

Null Pointer Exception ListAdapter

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