padding property
final
Padding around the visible portion of the dropdown widget.
As the padding increases, the size of the DropdownButton will also increase. The padding is included in the clickable area of the dropdown widget, so this can make the widget easier to click.
Padding can be useful when used with a custom border. The clickable area will stay flush with the border, as opposed to an external Padding widget which will leave a non-clickable gap.
Implementation
final EdgeInsetsGeometry? padding;