I am trying to upgrade my Flutter app to be Null Safe and I encountered a problem with the retrofit code generator.
So I have a RestAPI abstract class declared like this:
@RestApi(baseUrl: ApiConsts.authBaseURL)
abstract class IAuthApi {
factory IAuthApi(Dio dio) = _IAuthApi;
@POST(ApiConsts.verifyPath)
Future<AccessToken> verifyToken(@Body() VerifyBody body);
}
and the data classes are as follows:
@JsonSerializable(includeIfNull: false)
class VerifyBody {
@JsonKey(name: 'grant_type')
String grantType;
@JsonKey(name: 'client_id')
String clientId;
String username;
String otp;
String realm;
String audience;
String scope;
VerifyBody(this.username, this.otp,
{this.grantType = ApiConsts.GRANT_TYPE,
this.clientId = ApiConsts.CLIENT_ID,
this.realm = ApiConsts.SMS,
this.audience = ApiConsts.AUDIENCE,
this.scope = ApiConsts.AUTH_SCOPE});
factory VerifyBody.fromJson(Map<String, dynamic> json) => _$VerifyBodyFromJson(json);
Map<String, dynamic> toJson() => _$VerifyBodyToJson(this);
}
@JsonSerializable(includeIfNull: false)
class AccessToken {
@JsonKey(name: 'access_token')
String accessToken;
@JsonKey(name: 'refresh_token')
String refreshToken;
@JsonKey(name: 'id_token')
String idToken;
String scope;
@JsonKey(name: 'expires_in')
int expiresIn;
@JsonKey(name: 'token_type')
String tokenType;
AccessToken(this.accessToken, this.refreshToken, this.idToken, this.scope, this.expiresIn,
this.tokenType);
factory AccessToken.fromJson(Map<String, dynamic> json) => _$AccessTokenFromJson(json);
Map<String, dynamic> toJson() => _$AccessTokenToJson(this);
}
When I run the command to generate my retrofit code pub run build_runner build --delete-conflicting-outputs
I get the following error:
[SEVERE] retrofit_generator:retrofit on lib/services/api/AuthAPI.dart:
type 'ExpandIterable<InterfaceType, MethodElement>' is not a subtype of type 'Iterable<MethodElementImpl>' of 'iterable'
Has anyone encountered something like this?
