Radio<T> constructor

const Radio<T>({
  1. Key? key,
  2. required T value,
  3. @Deprecated('Use a RadioGroup ancestor to manage group value instead. ' 'This feature was deprecated after v3.32.0-0.0.pre.') T? groupValue,
  4. @Deprecated('Use RadioGroup to handle value change instead. ' 'This feature was deprecated after v3.32.0-0.0.pre.') ValueChanged<T?>? onChanged,
  5. MouseCursor? mouseCursor,
  6. bool toggleable = false,
  7. Color? activeColor,
  8. MaterialStateProperty<Color?>? fillColor,
  9. Color? focusColor,
  10. Color? hoverColor,
  11. MaterialStateProperty<Color?>? overlayColor,
  12. double? splashRadius,
  13. MaterialTapTargetSize? materialTapTargetSize,
  14. VisualDensity? visualDensity,
  15. FocusNode? focusNode,
  16. bool autofocus = false,
  17. bool? enabled,
  18. RadioGroupRegistry<T>? groupRegistry,
  19. WidgetStateProperty<Color?>? backgroundColor,
  20. BorderSide? side,
  21. WidgetStateProperty<double?>? innerRadius,
})

Creates a Material Design radio button.

This widget typically has a RadioGroup ancestor, which takes in a RadioGroup.groupValue, and the Radio under it with matching value will be selected.

The value is required.

Implementation

const Radio({
  super.key,
  required this.value,
  @Deprecated(
    'Use a RadioGroup ancestor to manage group value instead. '
    'This feature was deprecated after v3.32.0-0.0.pre.',
  )
  this.groupValue,
  @Deprecated(
    'Use RadioGroup to handle value change instead. '
    'This feature was deprecated after v3.32.0-0.0.pre.',
  )
  this.onChanged,
  this.mouseCursor,
  this.toggleable = false,
  this.activeColor,
  this.fillColor,
  this.focusColor,
  this.hoverColor,
  this.overlayColor,
  this.splashRadius,
  this.materialTapTargetSize,
  this.visualDensity,
  this.focusNode,
  this.autofocus = false,
  this.enabled,
  this.groupRegistry,
  this.backgroundColor,
  this.side,
  this.innerRadius,
}) : _radioType = _RadioType.material,
     useCupertinoCheckmarkStyle = false;