title: NullPointerException when trying to setText
body: <p>The textView shoud be instanced, I don't know why it says NullPointerException at textView.setText("test");</p>
  
  <pre><code>public View getView(int position,  View convertView, ViewGroup parent) {
  
      LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
      View rowView = inflater.inflate(R.layout.list_navdrawer, parent, false);
  
      TextView textView = (TextView) rowView.getTag(android.R.id.text1);
      textView.setText("test");
  
      if (position == mSelectedItem) {
          textView.setTextColor(getContext().getResources().getColor(android.R.color. holo_blue_dark));
          textView.setTypeface(Typeface.DEFAULT_BOLD);
      } else {
          textView.setTextColor(getContext().getResources().getColor(android.R.color.white));
      }
  
      return textView;
  }
  </code></pre>