AFNetworking 2.0 implementation code not working - ios

Question

I am trying to implement AFNetworking code to communicate with a web API. I am getting the following errors in the code:
No visible #interface for APIClass declares the selector
registerHTTPOperationClass
No visible #interface for APIClass declares the selector
setDefaultHeader:Value
No visible #interface for APIClass declares the selector
multiPartFormRequestWithMethod:path:parameters:constructingBodyWithblock
Obviously something to do with the new AFNetworking 2.0 migration...however I have been looking at all the migration posts and documentation and connot find the replacements for these without throwing an error:
// add the location details of the web service we wrote
#define kAPIHost #"http://myurl"
#define kAPIPath #"mywebapi/"
#implementation APIClass
// this is the implementation of the singleton method
+(APIClass*)sharedInstance{
static APIClass *sharedInstance = nil;
static dispatch_once_t oncePredicate;
dispatch_once(&oncePredicate, ^{
sharedInstance = [[self alloc] initWithBaseURL:[NSURL URLWithString:kAPIHost]];
});
return sharedInstance;
}
-(APIClass*)init{
// call super init
self = [super init];
if (self != nil){
user = nil;
[self registerHTTPOperationClass:[AFHTTPRequestOperation class]];
// Accept HTTP header; see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1
[self setDefaultHeader:#"Accept" value:#"application/json"];
}
return self;
}
// call to the server
-(void)commandWithParams:(NSMutableDictionary*)params onCompletion:
(JSONResponseBlock)completionBlock
{
// prepare e POST request by creating an NSMutableURLRequest instance using the
// parameters we want to send via POST
NSMutableURLRequest *apiRequest =
[self multipartFormRequestWithMethod:#"POST"
path:kAPIPath
parameters: params
constructingBodyWithBlock: ^(id <AFMultipartFormData>formData) {
// attach file if needed
}];
// create an operation to handle the network communication in the background
// and intialize it with the POST request we just prepared
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:
apiRequest];
// now set the 2 blocks needed for success and failure
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id
responseObject)
{
// success! - if the call is successful then we just pass in the JSON response
NSLog(#"responseObject: %#", responseObject);
completionBlock(responseObject);
}
// if there is a failure in the network call then we call the failure block
// and contrcut a new dictinary to hold the message of the network error
failure:^(AFHTTPRequestOperation *operation, NSError * error) {
//failure!
completionBlock([NSDictionary dictionaryWithObject:[error localizedDescription]forKey:#"error"]);
}];
// at this point we can call the start method so that AFNetworking can do its
// magic in the background
[operation start];
}
#end

Answer 1

You're getting these errors because the methods you're calling aren't methods of whatever class you're subclassing. I'll assume you're subclassing AFHTTPSessionManager, which is recommended for iOS 7 in AFNetworking 2.0. Based on that...
For your first two errors, I believe the updated lines below are the AFNetworking 2.0 way of doing it with AFHTTPSessionManager:
-(APIClass*)init{
// call super init
self = [super init];
if (self != nil){
user = nil;
self.requestSerializer = [AFJSONRequestSerializer serializer];
self.responseSerializer = [AFJSONResponseSerializer serializer];
}
}
For your third error, the method multiPartFormRequestWithMethod:path:parameters:constructingBodyWithblock should be replaced with:
[self POST:kAPIPath parameters:params constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
// attach file if needed
} success:^(NSURLSessionDataTask *task, id responseObject) {
// handle success
} failure:^(NSURLSessionDataTask *task, NSError *error) {
// handle failure
}];