Content-Type: multipart/form-data builder for Dart aiming to be compatible with RFC 7578.
API documentation is available here.
Add form_data to your pubspec.yaml and run pub get or flutter pub get.
dependencies:
form_data: ^1.0.0-nullsafety.1Instantinate FormData class and add fields using add and addBytes methods.
var formData = FormData();
formData.add('name', 'Name Surname');
formData.add('answer', 42);
formData.addBytes('file', await File('picture.png').readAsBytes(),
filename: 'myPicture.png', contentType: 'image/png');Extract data using body, contentType and contentLength headers.
var request = client.postUrl(myUri);
request.headers.set('Content-Type', formData.contentType);
request.headers.set('Content-Length', formData.contentLength);
request.add(formData.body);
await request.close();