focusNodes property Null safety
final
The list of FocusNodes, corresponding to each toggle button.
Focus is used to determine which widget should be affected by keyboard events. The focus tree keeps track of which widget is currently focused on by the user.
If not null, the length of focusNodes has to match the length of children.
See FocusNode for more information about how focus nodes are used.
Implementation
final List<FocusNode>? focusNodes;