Future Questions

I want to process mongodb documents in a batch of 1000 using multiprocessing. however, below code snippet is giving typeerror: zip argument

i have a list of filenames and use it to generate string which will be the new variable to store dataframe. the code below it's not

So i'm slowly getting the hang of the getx package usage after just finally learning about flutter and stateless and stateful widgets.in this

Collectionreference users = firebasefirestore.instance.collection('users'); firebaseauth auth = firebaseauth.instance; string uid =

I am trying to get data from firestore and pass that data to screen using stream. i have done this using futurebuilder, this solution

Child: raisedbutton( color: appcolors.darkgreencolor, onpressed: () async{

I am trying to create a screen which uses future builder and when there is data in the database it works great but when there is no data found

Since i have started flutter am facing an issue related to flutter async-await. most of the time i try to use future and await for the result it

I want to create a on scroll data load. currently i am getting data(ad list) from a api call as a future<list<ads>>

To demonstrate the problem, let me write down some code for a futurebuilder. futurebuilder(future: _myfuture, builder:

I hope you can help me find a way to solve this problem that arises, i am trying to pass the data from the list and the index to the next tab.

I am facing this error in my code: the argument type 'futurebuilder' can't be assigned to the parameter type 'future<object?>?'

I have faced this problem: performing hot restart... syncing files to device android sdk built for x86...

Im trying to call an api on login button tap, the api is been called, and is returning the right data, but the builder is not been called, neither

Import 'package:apps/sub_pages/apparel_brand.dart'; import 'package:flutter/cupertino.dart'; import 'package:flutter/material.dart';

I am using future builder as follows: futurebuilder<list<surveymodel>>( future:

_buildpincode() { final _pcode = getuserlocation(_areaname); futurebuilder<widget>( builder: (context, snapshot)

I am trying to make a flutter app that contains a login screen and then home screen (only two screens for now). i am using flutter secure storage

I'm trying to display a dialogue box when user select other from dropdown, dialogue is displaying but this error also

I have this code in _myappstate in my main.dart : var _p3provider; @override void initstate() {

In my flutter project when i start the project in the simulator everything works fine and the future builder only fires once, but when i do hot

Having an error in execution and returning a null value when the app is debugging getting the bellow error debug code

No mediaquery widget ancestor found. the relevant error-causing widget was futurebuilder scaffold widgets require a mediaquery widget

It has been days since i am trying to figure out how to keep hidden posts hidden from the user, who has hidden it. i tried filtering with

I have a function that return a future and i want to put it in a variable so that the value of the variable stays the same and can be used in

I have a page where i am fetching data from a server using a recipeid. in that page, i use the complete_model (that

I want to fetch the particular users' liked posts and show them in staggered grid view. i can able to do this in futurebuilder. but in

Here's my problem : i test the existence of a currentuser in an appmodel using provider lib to know if my app's scaffold will show homepage

I'm trying to make use of concurrent.futures within my script below. there are two functions make_requests() and

I have a futurebuilder here : futurebuilder<list<task>>( future:

I am trying to make a banner using this list which can be accessed with function "getbannerlist" instead of having to manually write a

Good afternoon. i'm new in flutter, i want to ask if it is possible to implement lazy loading for data retrieved from api which is rendered using

I have a multiprocessing code, and each process have to analyse same data differently. i have implemented: with

I have the following problem. when my app starts (user loggs in) i need to read value from firebase which is accountid - this is id

I have a question. at the moment i try to build a category list with data from firebase. to load the data i use a futurebuilder.

I have a function that calls a future in it. now i am not sure if the first function needs to be a future too to await for the data. here is my

In code i have stored the result of an api that co-operates with another api to give result. im getting the desired result but when i try to store

I am trying to use futurebuilder to build some listiles with listview.builder. the data is from firestore. it looks like the futurebuilder dont

I am new to flutter and trying to implement a tabview in homepage in the flutter app. the first tab is populated from data from firebase

I'm writing a kind of todo list in flutter, with null safety enabled. i'm storing the list of todo on a sqlite db using sqflite. the item

So i am trying to get data from api and display it in listview but i can see in logs response is coming but when comes to snapshot it has no data

I want to get data from rest api, using future slivergrid should build. but it is not showing, shows just white color and also i didn't know how

During the process of my web-application i want the user to allow to make changes and save them. for that process i'm using sharedpreferences in

I have been trying to convert my app to new flutter new version but i got this error the argument type object? can't be assigned to

Prior to migrating to null safety this worked. this is a user login verification method. future<bool> loginvalidate() async {

I am trying to select images and give them a background when an image is selected. my problem is when i select an image, the future builder reload

My code is working fine, but i don't know why the variable : map<string, dynamic> datajsonobject; return "null"

When a user sign up for the first time, i want that he gets a own firestore document with some data. this data i want to show on the homescreen

I have a method like this in my provider file to update a list of items from server : future<void> getservermeals(string

I'm getting some data from my api. i handle them by converting the returned json into some widget commentairesingle. but there's

I am trying to work with concurrency in flutter, so i have three get-request from server and i need to get values from them at the same time. each

Try to put some value on local variable on textfield and onpressed to get one variable on local and second variable as given on textfield and the

I have the following function call to a future that creates an item within firebase, what i am looking to achieve is to return the document id

Hello i am doing parallel network calls in flutter using the following code. list<dynamic> results = await future.wait([

Eg: future<int> _test1() async { return future.delayed(duration(seconds:

This is my train client class and getname method returns me a list of train objects. i check it by using printing statement it worked

I am having an issue with my futurebuilder in flutter. it's supposed to map the custom class 'geopost' to a 'list' from a firebase query but

Im trying to implement the pull to refresh action, on a future builder using refresh indicator widget. i've manage to get it to load correctly but

I'm having a hard time to wrap my head around infinite scrolling in flutter. i'm trying to load 10 recipes first, then with the help of

I would like to do these in a function: 1- connect socket 2- send query 3- listen data 4- return data but when i tried the socket.

I want to display the summoner data from riot api, but i get this error 'error: the method '[]' can't be unconditionally invoked because the

I need to create a dark or light theme according to the user preferences, but the error "the argument type 'future function()' can't be

Why the below code does not print i just woke up import java.util.concurrent.completablefuture; public class

Futurebuilder( future: getliter(), builder: (context, snapshot) => text( "estimated bill \n\n\n" + snapshot.data *

I have service recieve some data from api : import '../models/clubs.dart'; import 'package:http/http.dart' as http; class

I want to fetch some data from service by callable and future. this is one of my code: @override public void

In my code i parse json album file. so i have values for 'contentintro' and 'title'. but i can display only one of them with this code. my target

I would like to know when to use a futurebuilder and how is it usefull, given the fact that a widget can be built multiple times during its life

I have a function that gets coordinates latitude and longitude: future <geofirepoint> getcenter() async { var center =

I have this method as my repository: future<either<exceptions, bool>> userregister(formdata formdata) async { try {

How can i convert listview to reorderedablelistview to make a priority task app this is my application design output

I am trying to parse data from an api. for that, i am using futurebuilder to list all the parsed data in a listview. i've performed a check

I have the following data json data. { "0": "traceroute to

I write a list: list<listclass> listitems;,i want to push some data to it and show this list on the page using this

I have a variable named username,which depends on databse query,so async is a must. my older code can be concluded liks this

At first i need to fetch some ids => one of the ids returned aka: userid is used to get mailboxid =>

Using a futurebuilder, i get the following errors. error: the argument type 'asyncsnapshot' can't be assigned to the parameter

I want to collect all data and throw them into one map variable: //function future<map<string, string>?>

My code here: //get data future<object> sharedgetdata(string key) async{ sharedpreferences prefs=await

I am really newbie in flutter and sqlite. i need to store some data got from a db into a global variable (in this code it's a local variable just

After migrating to null safety getting error the getter 'docs' isn't defined for the type 'asyncsnapshot<object?>'. try importing the

After migrating to null safety i'm getting an error on listview as "the argument type 'object?' can't be assigned to the parameter type

When my app starts up, it detects whether the user is logged in or not (with firebase) and based on this check, it shows the homepage or the login

I have a widget like this, import 'package:flutter/material.dart'; class testwidget extends statelesswidget { const testwidget({

I am trying to get data from firebase using flutter with futurebuilder this the code futurebuilder<documentsnapshot>(

I am trying to display json data to a datatable in flutter. the data is coming from an api, getting data is no problem. but i am running to a

I am trying to display a horizontally scrollable listview of different images. this is supposed to be achieved with the widget multipleimagedemo.

The return type of the following function is future<file?> and yet the compiler does not complain that there is no return value

I was trying to calculate the percentage by retrieving the required field values from the firestore using futurebuilder, while doing so i'm facing

I have a futurebuilder getting specific items from firestore and returning them in a list. to update this list i added refreshindicator. when

I came across this piece of code on so: edit:the following code snippet is fully functional, i'm trying to understand if beside

I have not been able to find an answer to my problem so i will ask here. i created a document that contains one piece of data. once that

The documentation says: if the function has a

For example i have 4 future builder in one screen. all of them returns circularprogress indicator when they are still waiting for the data. in

In my app i want to initialize something before my widgets will be created. i need to do it exactly in app class and trying to use

I'm calling an api but i've been trying to parse this json response correctly but i haven't been able to resolve this issue. i call

I'm not sure if i got the snapshot thing in flutter right. therefore i would like to ask you guys if you aggree my thoughts about snapshot or

I get the data from http request, then i load it using futurebuilder, the problem is that it keeps calling the future method even if i set a

════════ exception caught by widgets library

I am getting data api and i convert it from json. i have this method to get data, bet when using it in a future builder it giving me