Vertical field manager
A vertical field manager is represented by the VerticalFieldManager class. This layout manager arranges fields in a single vertical column starting at the top of the screen and ending at the bottom of the screen. Because this layout manager is designed to arrange fields vertically, you can apply horizontal style bits, but not vertical style bits, to the fields that this manager contains. For example, you can apply Field.FIELD_LEFT, Field.FIELD_RIGHT, or Field.FIELD_HCENTER style bits, but you cannot apply Field.FIELD_TOP, Field.FIELD_BOTTOM, or Field.FIELD_VCENTER style bits.