general_callback library Null safety

Classes

BaseOptions
The common config for the Dio instance. dio.options is a instance of BaseOptions
CancelToken
You can cancel a request by using a cancel token. One token can be shared with different requests. when a token's cancel method invoked, all requests with this token will be cancelled.
DefaultTransformer
Dio
A powerful Http client for Dart, which supports Interceptors, Global configuration, FormData, File downloading etc. and Dio is very easy to use. [...]
DioMixin
ErrorInterceptorHandler
Handler for error interceptor.
FormData
A class to create readable "multipart/form-data" streams. It can be used to submit forms and file uploads to http server.
GeneralCallback<T>
GeneralResponse
Headers
HttpClientAdapter
HttpAdapter is a bridge between Dio and HttpClient. [...]
Interceptor
Dio instance may have interceptor(s) by which you can intercept requests/responses/errors before they are handled by then or catchError.
Interceptors
Interceptors are a queue, and you can add any number of interceptors, All interceptors will be executed in first in first out order.
InterceptorsWrapper
InterceptorsWrapper is a helper class, which is used to conveniently create interceptor(s). More details see Interceptor.
Lock
Add lock/unlock API for interceptors.
LogInterceptor
LogInterceptor is used to print logs during network requests. It's better to add LogInterceptor to the tail of the interceptor queue, otherwise the changes made in the interceptor behind A will not be printed out. This is because the execution of interceptors is in the order of addition.
MultipartFile
A file to be uploaded as part of a MultipartRequest. This doesn't need to correspond to a physical file. [...]
Options
Every request can pass an Options object which will be merged with Dio.options
RedirectRecord
RequestInterceptorHandler
Handler for request interceptor.
RequestOptions
Response<T>
Response describes the http Response info.
ResponseBody
ResponseInterceptorHandler
Handler for response interceptor.
Transformer
Transformer allows changes to the request/response data before it is sent/received to/from the server. [...]

Mixins

OptionsMixin

Enums

DioErrorType
ListFormat
ListFormat specifies the array format (a single parameter with multiple parameter or multiple parameters with the same name) and the separator for array items.
ResponseType
ResponseType indicates which transformation should be automatically applied to the response data by Dio.

Typedefs

CancelWrapper = Future Function(Future)
DioErrorCallback = dynamic Function(DioError)
EnqueueCallback = FutureOr Function()
GeneralResponseCallback = dynamic Function(GeneralResponse)
HeaderForEachCallback = void Function(String name, List<String> values)
InterceptorErrorCallback = void Function(DioError e, ErrorInterceptorHandler handler)
InterceptorSendCallback = void Function(RequestOptions options, RequestInterceptorHandler handler)
InterceptorSuccessCallback = void Function(Response e, ResponseInterceptorHandler handler)
JsonDecodeCallback = dynamic Function(String)
The default Transformer for Dio. If you want to custom the transformation of request/response data, you can provide a Transformer by your self, and replace the DefaultTransformer by setting the dio.Transformer.
ProgressCallback = void Function(int count, int total)
Callback to listen the progress for sending/receiving data. [...]
RequestEncoder = List<int> Function(String request, RequestOptions options)
ResponseDecoder = String Function(List<int> responseBytes, RequestOptions options, ResponseBody responseBody)
ValidateStatus = bool Function(int? status)
VoidCallback = dynamic Function()

Exceptions / Errors

DioError
DioError describes the error info when request failed.