Я использую это:
HorizontalFieldManager hfm = new HorizontalFieldManager(USE_ALL_HEIGHT);
VerticalFieldManager vfm = new VerticalFieldManager(USE_ALL_WIDTH | FIELD_VCENTER);
ProgressBarField pbf = new ProgressBarField(0, 100, 50, USE_ALL_WIDTH);
vfm.add(pbf);
hfm.add(vfm);
add(hfm);