Switch constructor

const Switch({Key key, @required bool value, @required ValueChanged<bool> onChanged, Color activeColor, Color activeTrackColor, Color inactiveThumbColor, Color inactiveTrackColor, ImageProvider activeThumbImage, ImageProvider inactiveThumbImage, MaterialTapTargetSize materialTapTargetSize })

Creates a material design switch.

The switch 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 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 Switch({
  Key key,
  @required this.value,
  @required this.onChanged,
  this.activeColor,
  this.activeTrackColor,
  this.inactiveThumbColor,
  this.inactiveTrackColor,
  this.activeThumbImage,
  this.inactiveThumbImage,
  this.materialTapTargetSize,
}) : _switchType = _SwitchType.material,
     super(key: key);