BlackBerry - MainScreen with vertical scroll shortcuts

Question

I am trying to create MainScreenwith vertical scroll. From what I read in the documentation, it MainScreenhas VerticalManagerinside, so it should be possible to allow vertical scrolling only with the appropriate design, i.e.

super(MainScreen.VERTICAL_SCROLL | MainScreen.VERTICAL_SCROLLBAR);

However, this does not work for me. I create a screen by adding a pair LabelFieldand no scrollbars, without scrolling. I am testing on 8900, OS 5.0.

Here is the code I'm using:

public class ExampleScreen extends MainScreen {

    public ExampleScreen() {
        super(MainScreen.VERTICAL_SCROLL | MainScreen.VERTICAL_SCROLLBAR);
        create();
    }

    private void add(String text) {
        add(new LabelField(text));
    }

    private void create() {
        add("line 0");
        add("line 1");
        ...
        etc
        ...
    }
}

Question: Am I doing something wrong? Is there a way to enable vertical scrolling with MainScreenor do I need to create one VerticalManagermyself?

Answer 1

LabelField (), , FOCUSABLE, : ( NullField (NullField.FOCUSABLE));