addResidentKit method
Implementation
bool addResidentKit(String? tag) {
assert(tag != null);
if (!residentList.contains(tag)) {
if (residentList.length >= 4) {
return false;
}
residentList.add(tag!);
SharedPreferences.getInstance().then((SharedPreferences prefs) =>
prefs.setString(KEY_KIT_PAGE_CACHE, listToString(residentList)));
return true;
}
return false;
}