All Questions
124 questions
0
votes
2
answers
371
views
About Fetching and Updating data from Node.js rest API in Flutter
I am developing a Flutter app. Upon login I store the User ID in shared preferences. Now I want to show the User Profile in the Navigation Drawer. The User Profile consists of: student's name, class, ...
- 53
0
votes
1
answer
311
views
Why result of rest api mapping is null?
Here is my controller code, why is data returning as a null value?
Future<List<GetEntityKindsModel>> getEntityKinds() async
{
List<GetEntityKindsModel> data = [];
try
{
...
- 17
0
votes
1
answer
82
views
Can't able fetch data form json using class in flutter(dart)
I am trying to retrieve the temperature data from a weather API using a generated class in Dart, created with the JSON to Dart Extension. I have been able to retrieve the entire JSON response from the ...
- 13
0
votes
1
answer
137
views
Flutter rest api mapping query
` Future<List<GetEntityKindModel>> getGroups() async {
List<GetEntityKindModel> data = [];
try {
var response = await http.get(Uri.parse(url));
...
- 17
-1
votes
1
answer
228
views
Unhandled exception: Connection timed out | Flutter | REST API
I have built a REST API using Flask framework in Python and it works completely fine when tested via Postman. But when I make requests using an android emulator, I get an exception displaying "...
- 41
1
vote
0
answers
214
views
how to post multiple data to rest api
when ever I try to post list of data at one time to rest api the api deletes the previous data and stares new one
[
{
"name": "6E72Ln9Y095x8n80Xgk6\/435291346914161.jpg"...
0
votes
1
answer
922
views
flutter does not show data from API
When I try to pull data from the jsonplaceholder API and put it on the screen, I don't have any problems, but when I try to change the data in this link (https://reqres.in/api/users?page=2 ) on the ...
- 51
0
votes
1
answer
148
views
Flutter: Do sort and filter feature in Flutter or the back end?
I am working on the sort and filter feature on my ecommerce application. Things like sort by price low to high, filter by brand name and colour.
Where is the best practice to do this feature? Should I ...
0
votes
1
answer
80
views
i am using django as a backend to flutter
when i get data from API Arabix words doesn't show and it show like this
is this from flutter or Django Restframework?
flutter request
'''
final url = Uri.parse('http://127.0.0.1:8000');
final data ...
1
vote
3
answers
2k
views
Flutter cant get a response from API
im quite new in flutter and i wanted to build a Reciep app with Edamam Api, but when i tried to print a response, i didnt get any response and showing nothing in my debug console. i didnt know what ...
- 113
1
vote
2
answers
1k
views
Flutter API keep loading and not showing
So i tried to create a listview of a news with this API https://newsapi.org/s/us-news-api but when i tried to implement it in my App it keeps loading and never show the data.
here is my homepage code
...
- 113
1
vote
1
answer
3k
views
"The body might complete normally, causing 'null' to be returned, but the return type, 'FutureOr<List<Article>>', is a potentially non-nullable type."
I was trying to make a News App with newsapi.org, but got this error:
The body might complete normally, causing 'null' to be returned,
but the return type, 'FutureOr<List<Article>>', is a ...
- 113
-1
votes
1
answer
379
views
How to implement all types of APIs request in Flutter GetX
I want to implement all the type of HTTP request in a API using Flutter GetX state management.
I have managed to do the "get" request.
I want to implement all the type of HTTP request in a ...
1
vote
1
answer
948
views
How to pass this 'Dio Post Request' Problem in Flutter
I have to send an object from the request. Although it works on Swagger, I cannot send it from my flutter code. When I was trying it, it always gave me Http status error 400 This problem is coming my ...
0
votes
1
answer
1k
views
How to read data from Api using getx Obx
lateinitialization error shows on the first loading of screen.datas are only getting after i hot reload my app.please help me to solve this issue.
It is an api to get details of a single actor. I want ...
0
votes
1
answer
1k
views
Flutter http 400 error when sending an XFile Image
I want to send a jpg file from my flutter app to .Net backend. I'm using http package.
My code is as follows:
var uri = Uri.parse('$url/upload/$id');
var request = http.MultipartRequest('POST', uri);
...
- 135
0
votes
2
answers
74
views
Flutter: 'Null' is not a subtype of type 'String', when calling rest api
I would be highly grateful if the answer is in simple terms. I am a beginner.
here is my full project code:
https://drive.google.com/file/d/1nj7Pj7Gzl-xVzzCm-aPRu2H1QUvdjoZB/view?usp=sharing
My error ...
- 365
0
votes
1
answer
248
views
Unable to do a POST request to my API using flutter and http client
I was building a Todo application in Flutter, with a custom API that I built using Node.js, planetscale(MySQL), and Prisma. The API is complete.
Now I was implementing the frontend, but for some ...
- 370
1
vote
2
answers
3k
views
How to make a http post using form data in flutter
I'm trying to do a http post request and I need to specify the body as form-data, because the server don't take the request as raw or params.
here is the code I tried
** Future getApiResponse(url) ...
- 19
0
votes
1
answer
28
views
Flutter list is not rebuilt and the new item has not appeared
hi i m using the rest API to bring data from the data base and when i make a change in the data base i want it so if i Go to the other screen and Pop to the previous screen i want the get request ...
- 47
-1
votes
1
answer
427
views
Rest API data stored in locally - Flutter
I have a requirement to store data locally to use within a Flutter mobile application. This stored data will be used for when the device is offline and will need to be updated, whilst offline.
On ...
- 55
-1
votes
1
answer
254
views
Flutter Call REST API WITHOUT AUTH ALWAYS RETURN 401
I am new to flutter and currently doing some testing on flutter sample code (Form App). I am trying to change the URI to my existing login REST API (which tested with postman and working fine). But it'...
- 79
0
votes
1
answer
1k
views
REST API request Flutter web CORS issue
I hope you are well
I have a problem with flutter web. I try to make an API REST request to https://timeapi.io/api/TimeZone/zone?timeZone=Europe/Amsterdam to get the time from a specific location but ...
- 352
0
votes
2
answers
257
views
Store Image in List<Xfile> from image urls
I have created a variable
List<Xfile> imageList;
using this variable I have showed the selected images in GridView.Builder and uploaded them.
But I want to store those uploaded images in this ...
- 1
0
votes
1
answer
55
views
Api type 'List<dynamic>' is not a subtype of type 'Map<String, dynamic>'
I'm following flutter's documentation for a api integration but I'm getting this error type 'List<dynamic>' is not a subtype of type 'Map<String, dynamic>'
The sample response api gives ...
- 141
0
votes
0
answers
250
views
How to get only specific value in REST API JSON response?
I'm using REST API to get data from my Learndash courses. I need a list of ID, title, and feature images. I used .. to get the lists of IDs and titles. But when I use _embed I also get IDs from wp:...
-1
votes
2
answers
5k
views
type 'String' is not a subtype of type 'Map<String, dynamic>' flutter
this is my model file:
// To parse this JSON data, do
//
// final economylistXml = economylistXmlFromJson(jsonString);
import 'dart:convert';
EconomylistXml economylistXmlFromJson(String str)...
- 2,794
1
vote
4
answers
587
views
type 'Null' is not a subtype of type 'String' flutter on api call
Im using a service to create api from xml. This is my model file:
// To parse this JSON data, do
//
// final economylistXml = economylistXmlFromJson(jsonString);
import 'dart:convert';
...
- 2,794
0
votes
1
answer
38
views
error: The operator '[]' isn't defined for the type 'Haberler'. flutter
i converted XML to api from a service:
this is my model :
// To parse this JSON data, do
//
// final economylistXml = economylistXmlFromJson(jsonString);
import 'dart:convert';
...
- 2,794
0
votes
1
answer
223
views
error: Non-nullable instance field 'reverseMap' must be initialized. Flutter
I'm using a service to create api from xml. I created model file from response. My model file is:
// To parse this JSON data, do
//
// final economylistXml = economylistXmlFromJson(jsonString);...
- 2,794
0
votes
0
answers
50
views
Showing detail page after search in Flutter not working
I am trying to mix two things and that is horribly going wrong. Thought I could pull it off, but nope.
I am using a separate search functionality that checks my URL to
fetch the posts
I am using the ...
- 965
0
votes
2
answers
216
views
Make links clickable in Flutter if rendered via Wordpress JSON API
Is there a way we can make the links in Flutter clickable if they are being fetched via JSON API? I mean, I can see that my links get a different color, but when I try to click on it, nothing happens. ...
- 965
0
votes
2
answers
4k
views
NoSuchMethodError: Class 'String' has no instance method 'toDouble'. flutter
I'm trying to call an API.
This is my model :
// To parse this JSON data, do
//
// final hisselist = hisselistFromJson(jsonString);
import 'dart:convert';
Hisselist hisselistFromJson(String ...
- 2,794
0
votes
1
answer
1k
views
Class '_InternalLinkedHashMap<String, dynamic>' has no instance getter 'name'. Receiver: _LinkedHashMap len:7 Tried calling: name Flutter
im trying to call an api.
This is model :
// To parse this JSON data, do
//
// final economylist = economylistFromJson(jsonString);
import 'dart:convert';
Economylist economylistFromJson(...
- 2,794
0
votes
3
answers
331
views
My app doesn't recognize data from model file
Hello this is my model file;
// To parse this JSON data, do
//
// final hisselist = hisselistFromJson(jsonString);
import 'dart:convert';
Hisselist hisselistFromJson(String str) => ...
- 2,794
0
votes
1
answer
221
views
Flutter rest api authentication
The accounts we added with createuser in Firebase authentication appear in the authentication section in firebase. Is it possible to do this with a rest service, not with authentication, and will it ...
- 1,231
0
votes
2
answers
55
views
Variable value update scope in dart
String name = "Jack";
String aName = "John";
if (!newChapter) {
example....
} else {
http.get(Uri.parse("https://api.quran.com/api/v4/chapters/" +...
-1
votes
1
answer
124
views
If I give changes in my api then how I can show that changes in my flutter ui without button?
if changes in my api then how to use setstate in my flutter app Generally I used to updata my screen to back then come at that screen plz any body give answer to that question plz
0
votes
1
answer
31
views
I am having issues with futurebuilder with list view builder | flutter
I try to get data from the API but not getting data. just getting instance of ModelName...
I am also not able to get the length of the snapshot.data.length. I read some blogs but didn't work it.
I ...
- 257
0
votes
1
answer
1k
views
How to pass List<String> as value into json body in Flutter API call
In Postman, I am passing value as picture. And getting success response also.
I have been trying to POST the API with this value through code but no luck yet.
- 2,623
0
votes
1
answer
64
views
Flutter display nested json in ListView return type String is not a subtype of type 'Map<String, dynamic>' in type cast flutter
JSON RESPONSE
{
"data": {
"Address": "xyz",
"CityID": "1",
"CityName": "xyz",
"CompanyName": "xyz",
"...
- 33
0
votes
1
answer
132
views
How to Parse Nested JSON ln Flutter?
{
"data": {
"Address": "ff9",
"CityID": "1",
"CityName": "Ahmedabad",
"CompanyName": "bs Soffy",
"...
- 33
0
votes
1
answer
307
views
Flutter Api not working with web and release apk but working in debugmide
Why Rest Api Not Working In Flutter Web and build apk only working(fetching info) in debug mode
-1
votes
1
answer
409
views
How to add or remove rest api array list data
I wanna add some data or string to an array list strings in my rest api data, an it's not working.
I don't know why.
Here is my api data which i got from my api in my local server the json data is ...
1
vote
2
answers
7k
views
How to fix: value of type 'Map<String, dynamic>', but got one of type 'List<dynamic>'
I am trying to pull data from a local restful API. I have already successfully did it with a single data collection. Now I am trying a list and I am running into this issue.
Error: Expected a ...
- 53
0
votes
1
answer
844
views
Create a local REST API for PostgreSQL
I hope you are doing well. I have some questions or rather a guide
I just finished a training in SQL, and I chose PostgreSQL as my DBMS.
Before I start, I'll give you a briefing to put you in the ...
- 352
1
vote
2
answers
1k
views
Facing some issues in Flutter REST API using with JWT token
I'm facing some issues in Flutter REST API using with JWT token
Here the header authentication was not passing properly. But it working good in Postman
**Example Code:**
String url = "...
- 13
0
votes
1
answer
338
views
Flutter 500 error on API when trying to make authenticated requests
I'm trying to make authenticated requests, but I get 500 errors. when I change my token, I get 401 error which is not authenticated meaning.
Here is my code:
import 'dart:convert';
import 'dart:io';
...
- 2,794
0
votes
1
answer
1k
views
Flutter getting data from a map API
hi am new to flutter and i need to get data from a map using API I m struggling at the moment and don't know what to do I always keep getting a error Error '_InternalLinkedHashMap<String, dynamic&...
- 47
0
votes
2
answers
407
views
Flutter API : How to post an "int" to a Json file without converting to a String?
Future<DataModel?> submitData(String name, int age) async {
var response = await http.post(Uri.http("localhost:3000", "users"), body: {
"name" : name,
&...
- 1,449