All Questions
753 questions
0
votes
1
answer
77
views
Is there any way to show the unique value in Dropdownbutton list?
My code is :
Column(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
...
0
votes
1
answer
35
views
How to use the get() functin provided by the http package?
I'm trying to get data from a website that hosts Weather APIs (OpenWeatherMap), but as soon as I use the get() method, I get an error that says :
[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] ...
- 505
0
votes
1
answer
934
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
3
answers
47
views
Among the whole API response string I wants to get only particular word in flutter how to do it?
Below is the response where I am getting image path.the file can be pdf or jpeg or any other format. for image i am showing it in dialogue and for pdf I have to download it to the user's device.For ...
-1
votes
2
answers
413
views
how to show time in date time picker in flutter..?
suppose you have a API and a key-value for this API is
"time": "22:05"
i want to show this time in a in a field and when i press the field the date time picker is pop up with time ...
- 23
-1
votes
2
answers
97
views
why my page route is not working properly?
InkWell(
onTap: () {
Get.put<DetailsPaymentHistoryController>(
DetailsPaymentHistoryController(
...
-1
votes
1
answer
62
views
How to render API output to UI? It's not rendering inside the scaffold's container
Please someone help. Here is my code. Why is not the output of the API (stored in parse) showing in the UI in the blue container. Thanks.
import 'dart:convert';
import 'package:api/model/pin_code.dart'...
- 17
0
votes
1
answer
431
views
How to show comments/details of the post according to the post id from an API?
I am trying to retrieve "comments" data from the API. But the main problem is I want to see the comments of the post according to the post I've selected or pressed instead of providing a ...
- 15
0
votes
1
answer
161
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
45
views
Incorrect use of Parent Data Widget in ListView
There are three tags in a row, which are fetching data from an API, now when the text coming from data is large, the pixels are overflowing , so i want that, when the data comes for first tag, it ...
0
votes
2
answers
131
views
flutter: Unhandled Exception: type 'Null' is not a subtype of type 'String'
I tried to use Moralis API to call NFT via wallet address, but got following error.
Unhandled Exception: type 'Null' is not a subtype of type 'String'
These are the code lines that were pointed out ...
- 3
0
votes
2
answers
81
views
I get the error 'Unhandled Exception: Converting object to an encodable object failed: Null' in flutter
I am trying to post a JSON to our api but keep getting this error even if all values are NULL and are allowed to be NULL, here is the code snippet that causes the issue.
final response = await http....
0
votes
1
answer
37
views
how do i fix type '_InternalLinkedHashMap<String, dynamic>' is not a subtype of type 'Iterable<dynamic>'?
i was trying to connect my flutter app to my own api using localhost, i actually got a bit of the data in my debug console but it stoped halfway and showing
type '_InternalLinkedHashMap<String, ...
- 113
0
votes
1
answer
743
views
Filter search filter data showing from Api using provider
how to implement search filter with API using provider? i have post Api when user hit Api it send back data to the user
My api
Future<List<Searchmodel>>Search(String keyword) async {
...
- 295
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
votes
2
answers
216
views
API How to filter item in Flutter? [duplicate]
Response from API:
"loan": [
{
"id": "612",
"icbsid": "55",
"loanId": "null",
"loanAcctNo&...
- 277
0
votes
1
answer
40
views
api response is perfect but not showing the data in app screen
I want to fetch data from api and showing on app screen but there nothing on screen but a circular progress indicator. if i try to print response.body on consol it works just fine and showing the body ...
0
votes
2
answers
105
views
RangeError for list in flutter
I am working on an app that requires me to display images from an API. It has been working fine till today morning. Today I edited some parts to pass the image to another page and tried running it. It ...
- 15
0
votes
2
answers
58
views
how to solve flutter formstate method?
I have this class in flutter
abstract class ForgetPasswordController extends GetxController {
checkemail();
}
class ForgetPasswordControllerImp extends ForgetPasswordController {
...
1
vote
0
answers
169
views
how to post data in x-www-form-urlencoded format using dart?
I need to post this data in x-www-form-urlencoded format
Map<String, dynamic> body = {
'data': [
{
'prefix': '225',
'phone': '1234567890',
'email': '...
- 11
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
0
votes
1
answer
45
views
Getting a Band-Image using Dart and Flutterr
so i started with a new Screen where the User can input his favorite Band.
The Plan is to display an image of this Band underneath the input field after the user clicked the Button "Search"
...
- 3
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
0
votes
1
answer
232
views
Why isn't my API data showing in a list view, when the GET request is successful?
I am working with flutter for the first time and having issues understanding why my data will not show. For context, the API returns a list of (physical) libraries and their current occupancy. I have ...
- 103
1
vote
1
answer
301
views
How to show json data in flutter carousel slider
I am creating a slider where I want to show json data in carousel slider the data will be coming from API ofcourse
What are the steps need for that can you guys guide me like have to create http ...
- 91
1
vote
1
answer
475
views
Get and post data in flutter with API from Laravel [duplicate]
Can anyone show me how to get and post data with API in flutter? I have tried some flutter API tutorials with Laravel but when I print the value is error cors, something wrong with my flutter code or ...
0
votes
1
answer
25
views
How i can show a saved fav items to listViewbuilder above the api response data in Flutter?
I want to save data on click the ListView leading button which I can do through SharedPref but i am facing a problem showing that data with API response and removing that common value and showing the ...
- 83
1
vote
1
answer
1k
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 ...
3
votes
1
answer
51
views
How would I use JSON formatted as such with flutter? Help working with the Gamebanana api
The Gamebanana api returns data as such for https://api.gamebanana.com/Core/Item/Data?itemtype=Mod&itemid=350538&fields=name%2Cdescription%2CUrl%28%29.sDownloadUrl%28%29&help=
[
"...
- 63
0
votes
1
answer
32
views
_InternalLinkedHashMap<String, dynamic>' is not a subtype of type 'List<dynamic>'
Hello everyone I need your help I want to display the information from an api and I have an error message that tells me _InternalLinkedHashMap<String, dynamic>' is not a subtype of type 'List<...
- 3
0
votes
1
answer
78
views
Flutter search listview in array index problem
This is my address button code. I want to search for an address in an array of addresses with multiple addresses. But I can't find it. It stuck with index problem in this part. How to call index loop? ...
- 61
0
votes
1
answer
263
views
Flutter Textformfield search receives data but does not display other data
This is my search code. It works by typing id the codes to display the information.
onSearch(String text) async {
if (text.isNotEmpty) {
List<Item> itemList = [];
for (var item in items) {
...
- 61
0
votes
1
answer
455
views
how can i do to insert an element to an existing object in Dart
"sale": {
"id": 3,
"name": "COCA"
}
return (response.data['deliveries'] as List).map((delivery) {
List<void> el = delivery['sale'];
...
0
votes
1
answer
370
views
flutter fetch data textformfield
This is my search code when i search and show listview how can i want the textformfield outside listview to fetch after complete search?
I typed some text into the search box and the data was fetched ...
- 61
1
vote
0
answers
134
views
Flutter fetch api index
I want to retrieve the next address recount shipto 0 .
I can only retrieve shipto 0 .
When it comes up with more than 1 address ,
it will recount shipto 0 . Sorry , I am practicing
I can't fetch the ...
- 61
0
votes
1
answer
653
views
i cant figure out why this error type 'Null' is not a subtype of type 'int' in type cast
Flutter 3.3.9 • channel stable • https://github.com/flutter/flutter.git
Framework • revision b8f7f1f986 (hace 2 semanas) • 2022-11-23 06:43:51 +0900
Engine • revision 8f2221fbef
Tools • Dart 2.18.5 • ...
- 3
0
votes
1
answer
436
views
Flutter Error : Unhandled Exception: RangeError (index): Invalid value: Valid value range is empty: 0
I am trying to fetch data from an API, and although data is fetched for a hardcoded request, I am unable to get it dynamically.
It gives the following error:
E/flutter (11813): [ERROR:flutter/runtime/...
- 33
0
votes
1
answer
119
views
Is there a way to get sha1 fingerprint and/or package name to send it via API in runtime?
What I need to know is a way to get SHA1 fingerprint and package name to autenticate an user via API, like this:
`
void main(){
postMethod(Uri url, {required Map<String, dynamic> header}){}
...
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
99
views
How to handle json api arrays in flutter
I am getting data from newsapi for my flutter app. How to get the id of the source in this json data?
{
"status": "ok",
"totalResults": 38,
"articles": [
{
...
- 13
0
votes
1
answer
267
views
Flutter RangeError (index): Invalid value: Only valid value is 0: 2
I can't fetch the initial default address 0 in the next username. It is often a problem when a large number of addresses are found in the list of addresses.
after some fixes type 'sting' is not a ...
- 61
2
votes
1
answer
507
views
DioError [DioErrorType.response]: Http status error [504]
There's an error in my flutter app DioError [DioErrorType.response]: Http status error [504] I don't know why it shows 504 as what I know before, 504 means Gateway Timeout, why it took a long time to ...
- 339
0
votes
1
answer
43
views
Flutter - loop not working while parsing json
I am trying to create model and parse json data from api
for that i created the model class you can see below
class FeatureModel {
String? PlanFeatures;
bool? FeatureStatus;
FeatureModel({this....
user15881299
0
votes
1
answer
31
views
Flutter model json
How do I retrieve the information in the address? Attempted to retrieve information I can fetch but the Items class part is not fetching the address part. I'm practicing the fetch api.
I'm not sure if ...
- 61
0
votes
1
answer
22
views
comparing a complex api in a gridview builder to get a specific key
I am trying to get a specific id from this complex api:
http://ddragon.leagueoflegends.com/cdn/12.22.1/data/en_US/champion.json
however everytime i try to get it from my code it gives the RangeError. ...
- 13
1
vote
3
answers
50
views
i have problem how to call data api based on parameters in flutter
i want to call data api based on the selected parameters, but i'm having a bit of trouble and this has been going on for a few days and it's still not done.
this is the api you want to fetch data ...
- 403
-1
votes
1
answer
46
views
How to parse json list into a string - Tweak the code so that I can display a single Json, just as I can display a List of Json
I am getting this error:
A value of type 'UserModel' can't be assigned to a variable of type 'List<UserModel>'.
I am using Postman to generate my api service code (http request that get api ...
- 365
0
votes
1
answer
778
views
Flutter use api and webhook
i wanna work with this api in my flutter app
https://dev.chargily.com/docs/epay-api/
i have done the first part 1.Make Payment
but the second part 2. Payment confirmation i don't know how to do it ...
- 21