SwitchListTile constructor Null safety
- {Key? key,
- required bool value,
- required ValueChanged<
bool> ? onChanged, - Color? tileColor,
- Color? activeColor,
- Color? activeTrackColor,
- Color? inactiveThumbColor,
- Color? inactiveTrackColor,
- ImageProvider<
Object> ? activeThumbImage, - ImageProvider<
Object> ? inactiveThumbImage, - Widget? title,
- Widget? subtitle,
- bool isThreeLine = false,
- bool? dense,
- EdgeInsetsGeometry? contentPadding,
- Widget? secondary,
- bool selected = false,
- bool autofocus = false,
- ListTileControlAffinity controlAffinity = ListTileControlAffinity.platform,
- ShapeBorder? shape,
- Color? selectedTileColor,
- VisualDensity? visualDensity,
- FocusNode? focusNode,
- bool? enableFeedback,
- Color? hoverColor}
Creates a combination of a list tile and a switch.
The switch tile itself does not maintain any state. Instead, when the
state of the switch changes, the widget calls the onChanged callback.
Most widgets that use a switch will listen for the onChanged callback
and rebuild the switch tile with a new value
to update the visual
appearance of the switch.
The following arguments are required:
value
determines whether this switch is on or off.- onChanged is called when the user toggles the switch on or off.
Implementation
const SwitchListTile({
super.key,
required this.value,
required this.onChanged,
this.tileColor,
this.activeColor,
this.activeTrackColor,
this.inactiveThumbColor,
this.inactiveTrackColor,
this.activeThumbImage,
this.inactiveThumbImage,
this.title,
this.subtitle,
this.isThreeLine = false,
this.dense,
this.contentPadding,
this.secondary,
this.selected = false,
this.autofocus = false,
this.controlAffinity = ListTileControlAffinity.platform,
this.shape,
this.selectedTileColor,
this.visualDensity,
this.focusNode,
this.enableFeedback,
this.hoverColor,
}) : _switchListTileType = _SwitchListTileType.material,
assert(value != null),
assert(isThreeLine != null),
assert(!isThreeLine || subtitle != null),
assert(selected != null),
assert(autofocus != null);