Widget _buildSwitchListTile(
     String title,
     String description,
      bool currentValue, 
      VoidCallback updateValue) {
    return SwitchListTile(
      value: currentValue,
      title: Text(title),
      subtitle: Text(description),
      onChanged: updateValue,
    );
  

CodePudding user response：

You can use this:

final void Function()? onTap;

and if you want, that function passed some data, you can use it like this:

final void Function(bool)? onTap;

CodePudding user response：

SwitchListTile onChanged provide a nullable bool on callback. Try changing Function(bool) updateValue

 Widget _buildSwitchListTile(
     String title,
     String description,
      bool currentValue, 
      Function(bool) updateValue) {
    return SwitchListTile(
      value: currentValue,
      title: Text(title),
      subtitle: Text(description),
      onChanged: updateValue,
    );