flutter how to upload file with content type in dio

Question

hello i try to upload image with dio package but i have to set contentType for image but i can not set it and get this error when set MediaType ====> The method 'MediaType' isn't defined for the type 'AnalyzeData'.

this is mycode

 Dio dio = new Dio();
 dio.options.headers = {
  'token': token,
 };


try {
  String ip = await getServerIP();
  FormData formData = new FormData.fromMap({
     "front":front==null?null:  MultipartFile.fromFileSync(
      front,
      filename: "image.png",
      contentType: MediaType()  <=== get error in this line
    ),
 }
 );
  response = await dio.post("$url", data: formData);

how can i fix it i use last version of Dio package

SSDN · Accepted Answer · 2020-04-17T20:39:05.503

20

you should define contentType like this with type and subtype:

contentType: MediaType(type,subType)

// example MediaType('image','png')

Also be careful about MediaType it comes from diffrent libraries so you should use package http_parser to use it...

edited Apr 17 '20 at 20:39

answered Apr 17 '20 at 20:25

SSDN

276
3
8

You saved me. Thank you – gordonturibamwe Oct 26 '20 at 21:07
the last line no one said :( Thanks man! – Mehedi Hasan Shifat May 23 '21 at 10:06
1

Do not forget to add the dependency. Example http_parser: ^4.0.0 – Caio Santos Jun 07 '21 at 17:59

score 8 · Answer 2 · answered Oct 22 '20 at 10:48

8

Just Add lib http_parser to use MediaType() with Dio

answered Oct 22 '20 at 10:48

Deepak Ror

2,084
2
20
26

Ritunjay kumar · Answer 3 · 2022-07-11T07:58:39.927

5

import the given package

import 'package:http_parser/http_parser.dart';

it has worked for me

edited Jul 11 '22 at 07:58

answered Jan 03 '22 at 17:39

Ritunjay kumar

261
3
6

flutter how to upload file with content type in dio

3 Answers3