How to set size of VerticalFieldManager on Blackberry

There is a ListField in VerticalFieldManager and I want to fix the height o开发者_运维问答f VerticalFieldManager. Because there is an endless blank area at the bottom of ListField.

Try this one:

public class FixedHeightVerticalFieldManager extends VerticalFieldManager {

    private int height;

    public FixedHeightVerticalFieldManager(int height) {
         super(VERTICAL_SCROLL | VERTICAL_SCROLLBAR);
         this.height = height;
    }

    protected void sublayout(int maxWidth, int maxHeight) {
        super.sublayout(maxWidth, height);
        setExtent(maxWidth, height);
    }
}