AFHTTPClient subclass with custom NSMutableURLRequest objects - objective-c

Question

My app is using AFNetworking for twitter API access and I've created a twitter api client by subclassing AFHTTPClient:
#import "AFHTTPClient.h"
#interface TwitterAPIClient : AFHTTPClient
+ (TwitterAPIClient *)sharedClient;
#end
#import "TwitterAPIClient.h"
#import "AFJSONRequestOperation.h"
static NSString * const kAFTwitterAPIBaseURLString = #"http://api.twitter.com/1/";
#implementation TwitterAPIClient
+ (TwitterAPIClient *)sharedClient {
static TwitterAPIClient *_sharedClient = nil;
static dispatch_once_t TwitterAPIClientToken;
dispatch_once(&TwitterAPIClientToken, ^{
_sharedClient = [[TwitterAPIClient alloc] initWithBaseURL:[NSURL URLWithString:kAFTwitterAPIBaseURLString]];
});
return _sharedClient;
}
- (id)initWithBaseURL:(NSURL *)url {
self = [super initWithBaseURL:url];
if (!self) {
return nil;
}
[self registerHTTPOperationClass:[AFJSONRequestOperation class]];
[self setDefaultHeader:#"Accept" value:#"application/json"];
return self;
}
#end
If I use getPath's & postPath's on the TwitterAPIClient, the API client returns JSON responses correctly, as I register a AFJSONRequestOperation as the operation class.
However, Sometimes, I need to create custom NSMutableURLRequest requests and not use the getPath's & postPath's AFHTTPClient functions.
When I use these requests, the response is getting back from the client is standard NSData and not NSDictionary as I get from AFJSONRequestOperation.
NSURL *url = [NSURL URLWithString:#"https://api.twitter.com/1.1/account/verify_credentials.json"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[self.auth authorizeRequest:request];
AFHTTPRequestOperation* apiRequest = [[TwitterAPIClient sharedClient] HTTPRequestOperationWithRequest:request success:^(AFHTTPRequestOperation *operation, NSDictionary* responseObject) {
[self createAccount];
self.account.username = [responseObject objectForKey:#"screen_name"];
dispatch_async(dispatch_get_main_queue(), ^{
[self.delegate didProfileLoaded:self.account];
});
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
if (error!=nil) {
NSString* errorMessage = nil;
NSString* errorData = [error.userInfo objectForKey:NSLocalizedRecoverySuggestionErrorKey];
if (errorData!=nil) {
NSError* error;
NSDictionary* json = [NSJSONSerialization JSONObjectWithData:[errorData dataUsingEncoding:NSUTF8StringEncoding] options:kNilOptions error:&error];
if (json!=nil && error==nil) {
NSArray* errorMeta = [json objectForKey:#"errors"];
if (errorMeta!=nil) {
errorMessage = [[errorMeta objectAtIndex:0] objectForKey:#"message"];
}
} else {
errorMessage = errorData;
}
}
dispatch_async(dispatch_get_main_queue(), ^{
[self.delegate didUpdateFailed:errorMessage];
});
}
}];
[[TwitterAPIClient sharedClient] enqueueHTTPRequestOperation:apiRequest];
Is there a way I can force these AFHTTPRequestOperation to be created as AFJSONRequestOperation objects?

Answer 1

Just create an AFJSONRequestOperation directly, like so:
AFJSONRequestOperation* apiRequest = [[AFJSONRequestOperation alloc] initWithRequest:request];
[apiRequest setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
// ....
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
// ...
}];
More examples here and here.