// Set up the components that allow the user to choose
// an animation and then run it.
final VerticalFieldManager vManager =
new VerticalFieldManager(Manager.VERTICAL_SCROLL);
final Manager fManager = new FlowFieldManager(Manager.VERTICAL_SCROLL);
setChoiceField();
fManager.add(_options);
setButtonField();
fManager.add(_playButton);
vManager.add(fManager);
add(vManager);
// First animation is set to the bouncing ball animation by default.