I'm new and currently learning Flutter, I have a question about FutureBuilder. My code is stuck at ConnectionState.waiting and I'm not sure why. My codes are import 'dart:convert'; import 'package:flutter/material.dart'; import 'package:http/http.dart' as http; class DartPad extends StatefulWidget { const…
import 'dart:async'; import 'dart:convert'; import 'package:http/http.dart' as http; void main() async { print('start api'); for (var i = 1; i < 4; i++) { print(unawaited(fetchApi(i))); } print('end api'); } Future<String> fetchApi(int idNum) async { final url = Uri.parse('https://jsonplaceholder.typicode.com/albums/$idNum'); final response…
I am trying to retrieve a document field value given a documentID. I have solved the db calling part, but I cannot send the data back up. It's almost as if the function this.userDbService.getVendorNameFromUserId below isn't being called at all.…
I have 2 publishers that return the same type of value. One publisher is meant to emit N/W responses and other is meant to emit cached responses. These publishers will be shared across multiple requests by different consumers. I am…
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…
How do I handle really intensive server-side tasks, that can take multiple minutes? It's a user-facing task, so the user can give me some data, and the server will then work in the backend. I am fairly new to this,…
Consider this simple test case func test_Example() async { let exp = expectation(description: "It's the expectation") Task { print("Task says: Hello!") exp.fulfill() } wait(for: [exp], timeout: 600) } When I run this on an actual device, the test passes. However,…
I have a weird error with my Flutter code involving a Future<T> return type. I have a fairly simple piece of code that makes a get request to the backend, and a .then clause to handle the return. Everything's fine,…
i have this method inside a class Map<String, String> value = {}; bool isReady = false; void getData() async { try { Map<String, String> data = await CustomerData().getService(selectedService); isReady = true; setState(() { value = data; }); } catch (e)…
I have been struggling for hours and couldn't figuring out how to increment i using useState([]). I know useState([]) is an asynchronous function, and I don't know how to increment i properly to give unique keys to each Text Here…