AFHTTPSessionManager GET method syntax error? - objective-c

Question

Here's my code
AFHTTPSessionManager *manger = [[AFHTTPSessionManager alloc] init];
[manger GET:requestUrl parameters:params progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
}];
I got two error from Xcode.
Unknown type name 'id'
Incompatible block pointer types sending 'void (^)(NSURLSessionDataTask * _Nonnull __strong, int)' to parameter of type 'void (^ _Nullable)(NSURLSessionDataTask * _Nonnull __strong, id _Nullable __strong)'.
Why is this happen?I had imported AFNetworking file in my header file.My Xcode version is 8.2,and AFNetworking version is 3.1.When I put this code snippet in my other project,there was no error.That was really confused me.Anyone can help?
I used Carthage to import AFNetwoking,still the same error.:(

Answer 1

Final solution:I recreate the project.And migrate the old code to new project.It works.But still know the reason why the old version code not work.

Answer 2

your method should like this
-(void)callWebserviceWithParams:(NSMutableDictionary *)_params
action:(NSString *)_action
success:(void (^)(id))_success
failure:(void (^)(NSError *))_failure
{
if ([[AFNetworkReachabilityManager sharedManager] isReachable]) {
//AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
// manager.responseSerializer = [AFHTTPResponseSerializer serializer];
NSString *url = [BASE_URL stringByAppendingString:_action];
AFHTTPSessionManager *manager = [[AFHTTPSessionManager alloc] initWithBaseURL:[NSURL URLWithString:url]];
manager.requestSerializer = [AFHTTPRequestSerializer serializer];
manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:#"application/json", #"text/json", #"text/javascript",#"text/html", nil];
[manager POST:url parameters:_params progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
NSLog(#"response = %#", responseObject);
if( _success )
{
_success( responseObject ) ;
}
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
NSLog(#"error = %#", error);
if( _failure )
{
_failure( error) ;
}
}];
}
}