BlackBerry Java Application Development

Time for action - creating a ListField

1. The first thing that you need to do is change the class declaration again to implement the callback interface. Replace the class declaration with the following list.

   public class FieldSamplerScreen extends MainScreen implements FieldChangeListener, ListFieldCallback
   

2. Next, you need to add a data member to the class to hold the items of your list.

   protected String listMembers[] = {"Item1","Item2","Item3"};
   

3. Next, you need to implement the methods of the callback. Add the following methods to the FieldSamplerMainScreen class.

   public void drawListRow(ListField list, Graphics g, int index, int y,int width) { g.drawText( listMembers[index], 0, y, 0, 50 ); switch (index) { case 0: g.setColor(Color.BLUE); g.setFont(Font.getDefault().derive(Font.BOLD)); ...