Flutter - Refresh page if data isn't loaded on screen - flutter

Question

I have a Future.delayed in my initState function that gets jwt cache and uses it to get the logged in user's details. The initState function is:
#override
void initState() {
super.initState();
Future.delayed(Duration.zero, () async {
final token = await CacheService().readCache(key: "jwt");
if (token != null) {
await Provider.of<ProfileNotifier>(context, listen: false)
.decodeUserData(
context: context,
token: token,
option: 'home',
);
}
});
}
Now it does work and I do get the data but not on the first run. I have to either hot reload the emulator or navigate to another page and come back for the page to rebuild itself and show the data on screen. I don't understand why it doesn't show the data on the first run itself.
I tried to add conditional to build method to run setState and initState again if data is not there.
#override
Widget build(BuildContext context) {
ProfileModel profile =
Provider.of<ProfileNotifier>(context, listen: false).profile;
if (profile.profileName.isEmpty) {
print('reloading to get data');
initState();
setState(() {});
} ....
And it doesn't run coz the data is there but somehow it doesn't show up on the screen till the page is refreshed. I can't seem to figure out the problem here. Please help.
EDIT: ProfileNotifier class:
class ProfileNotifier extends ChangeNotifier {
final ProfileAPI _profileAPI = ProfileAPI();
final CacheService _cacheService = CacheService();
ProfileModel _profile = ProfileModel(
profileImage: "",
profileName: "",
profileBio: "",
);
AccountModel _account = AccountModel(
userId: "",
userEmail: "",
userPassword: "",
);
ProfileModel get profile => _profile;
AccountModel get account => _account;
Future decodeUserData({
required BuildContext context,
required String token,
required String option,
}) async {
try {
_profileAPI.decodeUserData(token: token).then((value) async {
final Map<String, dynamic> parsedData = await jsonDecode(value);
var userData = parsedData['data'];
if (userData != null) {
List<String>? userProfileData = await _cacheService.readProfileCache(
key: userData['userData']['id'],
);
if (userProfileData == null) {
final isProfileAvailable =
await Provider.of<ProfileNotifier>(context, listen: false)
.getProfile(
context: context,
userEmail: userData['userData']['userEmail'],
);
if (isProfileAvailable is ProfileModel) {
_profile = isProfileAvailable;
} else {
_account = AccountModel(
userId: userData['userData']['id'],
userEmail: userData['userData']['userEmail'],
userPassword: userData['userData']['userPassword'],
);
_profile = ProfileModel(
profileImage: '',
profileName: '',
);
}
if (option != 'profileCreation' && isProfileAvailable == false) {
Navigator.of(context).pushReplacementNamed(ProfileCreationRoute);
}
} else {
_account = AccountModel(
userId: userData['userData']['id'],
userEmail: userData['userData']['userEmail'],
userPassword: userData['userData']['userPassword'],
);
_profile = ProfileModel(
profileName: userProfileData[3],
profileImage: userProfileData[4],
profileBio: userProfileData[5],
);
}
} else {
Navigator.of(context).pushReplacementNamed(AuthRoute);
}
notifyListeners();
});
} catch (e) {
debugPrint('account/profileNotifier decode error: ' + e.toString());
}
}
Future getProfile({
required BuildContext context,
required String userEmail,
}) async {
try {
var getProfileData = await _profileAPI.getProfile(
userEmail: userEmail,
);
final Map<String, dynamic> parsedProfileData =
await jsonDecode(getProfileData);
bool isReceived = parsedProfileData["received"];
dynamic profileData = parsedProfileData["data"];
if (isReceived && profileData != 'Fill some info') {
Map<String, dynamic> data = {
'id': (profileData['account']['id']).toString(),
'userEmail': profileData['account']['userEmail'],
'userPassword': profileData['account']['userPassword'],
'profile': {
'profileName': profileData['profileName'],
'profileImage': profileData['profileImage'],
'profileBio': profileData['profileBio'],
}
};
AccountModel accountModel = AccountModel.fromJson(
map: data,
);
return accountModel;
} else {
return false;
}
} catch (e) {
debugPrint('profileNotifier getProfile error: ' + e.toString());
}
}
Future setProfile({
required String profileName,
required String profileImage,
required String profileBio,
}) async {
_profile.profileName = profileName;
_profile.profileImage = profileImage;
_profile.profileBio = profileBio;
await _cacheService.writeProfileCache(
key: _account.userId,
value: [
_account.userId,
_account.userEmail,
_account.userPassword as String,
profileName,
profileImage,
profileBio,
],
);
notifyListeners();
}
}
I've removed the create profile, update profile and profile image upload methods in the notifier as they are not involved here.
The CacheService class using shared_preferences package is:
class CacheService {
Future<String?> readCache({
required String key,
}) async {
final SharedPreferences sharedPreferences =
await SharedPreferences.getInstance();
String? cache = await sharedPreferences.getString(key);
return cache;
}
Future<List<String>?> readProfileCache({
required String key,
}) async {
final SharedPreferences sharedPreferences =
await SharedPreferences.getInstance();
List<String>? cachedData = await sharedPreferences.getStringList(key);
return cachedData;
}
Future writeCache({required String key, required String value}) async {
final SharedPreferences sharedPreferences =
await SharedPreferences.getInstance();
await sharedPreferences.setString(key, value);
}
Future writeProfileCache(
{required String key, required List<String> value}) async {
final SharedPreferences sharedPreferences =
await SharedPreferences.getInstance();
await sharedPreferences.setStringList(key, value);
}
Future deleteCache({
required BuildContext context,
required String key,
}) async {
final SharedPreferences sharedPreferences =
await SharedPreferences.getInstance();
await sharedPreferences.remove(key).whenComplete(() {
Navigator.of(context).pushReplacementNamed(AuthRoute);
});
}
}
I'm not sure if the code is completely optimized. Any improvement is welcome. Thanks.