I want to send a File with a complex JSON object containing JSON Array. How can I do it? I want to send this kind of FormData. Here is how I have implemented it: final data = { "id": 6...

Jan 10, 2021 · I have this method in my app to send post request with files. In my case I send files and also fields with dynamic values. I tried send List<String> but server (backend) return me error with message: The seedlings field must be an array. Example seedlings list value: List<String> seedlings = ['Apple', 'Banana']; Code:

Sep 12, 2021 · You can send an array in formData as {key[value][0]: value1, key[value][1]: value2, ...}. A way to achieve that here would be: for (var i = 0; i < values.length; i++) 'fields[0][value][$i]': values[i] ...valuesArray, 'fields[0][field_id]': '20', 'fields[0][group_id]': '1',

Oct 16, 2023 · In Flutter, whether you need to send some data to the RESTful API, access a database, or then Send content from the Flutter App, Flutter provides you with the tools and packages (HTTP) to do this kind of API calls easily.

If you want to send form data in HTTP post request in Flutter or Dart, you can use map and add data to it and pass the map variable to the body parameter of http.post() function.

Jun 25, 2021 · Suppose our API looks like this and you have to pass list to the price_info_id [] and new_price []: So the simple steps are: Import http package: We’ll initialize http request like this: In data,...

Oct 17, 2024 · Learn how to send data from your Flutter app to a server using HTTP methods. Follow step-by-step instructions to handle form submissions and post requests. In today’s mobile applications,...

Learn how to effectively send an array in the body of an HTTP POST request using Dart and Flutter, ensuring smooth data transfer in your applications.---This...

Apr 14, 2025 · Makes a server POST request with the specified data encoded as form data. This is roughly the POST equivalent of getString. This method is similar to sending a FormData object with broader browser support but limited to String values.

Sep 8, 2019 · 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. This is what I'm doing: import 'dart:convert'; import 'package: