onChanged property
final
Called when the value of the checkbox should change.
The checkbox passes the new value to the callback but does not actually change state until the parent widget rebuilds the checkbox tile with the new value.
If null, the checkbox will be displayed as disabled.
The callback provided to onChanged should update the state of the parent
StatefulWidget using the State.setState method, so that the parent
gets rebuilt; for example:
link
CheckboxListTile(
value: _throwShotAway,
onChanged: (bool? newValue) {
setState(() {
_throwShotAway = newValue;
});
},
title: const Text('Throw away your shot'),
)
Implementation
final ValueChanged<bool?>? onChanged;