setBool static method
Saves a boolean value
to persistent storage in the background.
Returns false if key is null.
Implementation
// ignore: avoid_positional_boolean_parameters
static Future<bool> setBool(String? key, bool? value) async {
if (key == null || value == null) {
return false;
}
final prefs = await instance;
return prefs.setBool(key, value);
}