Why do I keep getting 'Instance of...' when I'm trying to get a String. What's wrong with the function? Future<string?> counter() async { Future.delayed(const Duration(seconds: 5), () { context.watch<FoodCount>().display(widget.food).toString(); return widget.food.quantity.toString(); }); int count = widget.food.quantity; // print(count); return count;…
I was Learning Async and Future Functions in Dart but I got confused because I still not get it like how print("object") is compiled before getData() function because traditionally next Line is read by compiler once the before line or…
I would like to base on a future bool value, to set different icons pass back to a data card inside a list, I tried .then or FutureBuilder, but still not successful. Scaffold: child: ListView.builder( itemCount: fullList.length, itemBuilder: (BuildContext context,…
I have a longList where I need each element in the list to be sent to a database to return some a sub-list. I then display each value in it's own PageView using PageView.builder. and FutureBuilder. At first I was…
I have following code: class BidBloc extends Bloc<BidEvent, BidState> { final FirestoreRepository firestoreRepository; BidBloc({required this.firestoreRepository}) : super(BidsLoadingState()) { on<LoadAllBidsEvent>((event, emit) async { emit(BidsLoadingState()); Item item = event.item; Future getBids() async { List<Bid> bids = []; item.bids?.forEach((element) async { Bid? bid…
Flutter Error I tried a couple of ways but I thik so that I am missing a particular method or function here.
This is the init state of my class: List<Webinar> webinarList = []; Future<void> fetchWebinars() async { webinarList = await context.read<UserRepository>().fetchWebinar(); print(webinarList); } @override void initState() { super.initState(); fetchWebinars(); } I want to display a list in which there's a list…
Help The return type 'Future' isn't a 'Widget', Future deleteProduct(String productId) async { String url = 'http://127.0.0.1:8000/api/products' + productId; var response = await http.delete(Uri.parse(url)); return json.decode(response.body); } Code structure GestureDetector( onTap: () { final snackBar = SnackBar( content: const Text('Data…
I'm trying to save in cache of the articles that I'm fetching through the code above Link API Service, But I get an error in the FutureBuilder of the search icon to search articles in the Homepage telling me "The…
i have asynchronous function which is scraping data from website. (I am using http and html plugins). This function fills up my imageUrls List with url's. I am calling out that function in initState and in FutureBuilder. I pass this…