add authorization header in MultipartRequest in dart

Question

I am using MultipartRequest in dart in order to upload files to API. However I need to add an authorization header to my request. The problem that i am facing is that the header attribute is final and I can't overwrite it. How can I fix that? Thank you!

Answer 1

headers is a Map, so add the key/value.

http.MultipartRequest request =
    new http.MultipartRequest('POST', Uri.parse(url));
request.headers['authorization'] = 'the auth header value';

Answer 2

Alternatively, if you want to pass all the preconfigured header (key, value) Map, from your, let's say _headers, you can do something like:

_headers.forEach((k, v) {
  request.headers[k] = v;
});