Skip to content
Flutter Fixes

Flutter Fixes

Find 100% working, tested solutions for Flutter and Dart related issues. Daily Updated!

  • All Questions
  • Flutter
  • Dart
  • Flutter Web
  • Bloc
  • Animation
  • Flutter Desktop
  • Flutter IOS
  • Flutter Packages

Tag: json

December 12, 2022 Flutter

Why do I get 'data2' has not been initiliazed error here?

Issue It makes no sense at this code. I am trying to grab some strings from the ALREADY INITIALIZED from the futurebuilder data, but can’t do so. It gives me the data2 has not been initialized error. Here is data

Continue reading
November 25, 2022 Flutter

Retrieving complex api information and putting it in a listviewbuilder

Issue I am trying to create an mobile app where i can put in a name and get information from an api afterwards, this was working until the api got more complex. can share this information btw. It is showing

Continue reading
November 25, 2022 Dart

How do I get the value from nested locally stored json-file in Flutter?

Issue I’m trying to get the nested values from my locally stored json file with Flutter. I can get the "outer" values, but I haven’t been able to get the "inner" ones. I have googled and searched here, but I

Continue reading
November 22, 2022 Flutter

how to sum data from json object ? flutter

Issue I am building shopping and I am new to flutter I am calling data from my server by the below method: Future getCartData() async { print("this is the token mytoken"); String url = ‘https://myurl.com/apis/getCartItems’; http.Response response = await http.post(Uri.parse(url),

Continue reading
November 21, 2022 Dart

Constant Error – Type List Dynamic Is Not A Subtype Of Type Map String Dynamic

Issue I am consuming data from an API and whenever I try to do so, I keep getting this error. Type List Dynamic Is Not A Subtype Of Type Map String Dynamic In my attempt to find answers, I came

Continue reading
November 20, 2022 Flutter

Flutter: How to optionally serialize many list of data or object of data?

Issue I want to serialize optionally JSON data from API as a list or as an object. Here I’m kinda recreating how DjangoRestFramework serializer works in Flutter. Where you can optionally past a parameter many=True or many=False to indicate there

Continue reading
November 18, 2022 Flutter

how to sum up json keys value in array if by putting condition on key

Issue I have a json array like this below , but i want to aggregate this by condition if their userid , groupname , segment & exchange is matching then perform sum operation on all jsonkeys and give output as

Continue reading
November 18, 2022 Flutter

Flutter error occurred when adding some JSON files from "Random User"

Issue I tried to excute this code in my android mobile. it has not any error. when app start show "waiting" massage, after that body only displayed "true". **body: FutureBuilder( future: getUser(), builder: (BuildContext context,AsyncSnapshot snapshot) { if(snapshot.connectionState == ConnectionState.waiting){

Continue reading
November 18, 2022 Flutter

Volley JsonObjectRequest not fetching data

Issue I am trying to work on volley with gridview. JsonObjectRequest does not fetch any response. I looked up for links on stackoverflow abt JsonObjectRequest passing null as parameter and changing volley version but nothing works as the error was

Continue reading
November 17, 2022 Dart

Question : Dart/Flutter passing parameters not working

Issue Sorry if my question is stupid, but I am studying it by myself and don’t have much experience. 🙂 thanks for your help! I wanted to change a map to JSON. I tried to follow https://docs.flutter.dev/development/data-and-backend/json#creating-model-classes-the-json_serializable-way this example, but

Continue reading

Posts navigation

1 2 3 … 63 Next Posts»

android android-fragments android-jetpack android-jetpack-compose android-layout android-recyclerview android-studio angular angular-dart api bloc dart dart-async dart-null-safety dart-polymer dart-pub dart-webui firebase firebase-authentication firebase-realtime-database flutter flutter-animation flutter-bloc flutter-dependencies flutter-getx flutter-layout flutter-listview flutter-navigation flutter-packages flutter-provider flutter-test flutter-web flutter-widget google-cloud-firestore gradle ios java javascript json kotlin list listview mobile react-native xml

WordPress Theme: Maxwell by ThemeZee.

Privacy Policy - Terms and Conditions