Basically i browsed stack overflow for a while to get a hang of AFNetworking framework. I decided to use AFHTTPClient, by making singleton class that extends AFHTTPClient. Some of the code that I have seen goes like this:
(InspectionClient*) sharedClient {
static InspectionClient *client = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
client = [[InspectionClient alloc] initWithBaseURL: [NSURL URLWithString:kServerName]];
});
return client;
}
- (id) initWithBaseURL:(NSURL *)url {
self = [super initWithBaseURL:url];
if (self) {
// register operation class
[self registerHTTPOperationClass:[AFJSONRequestOperation class]];
}
return self;
}
I have noticed that when creating new instance of client, you must register operation class. And that seems ok, if you just wonna send JSON files. But i would like for my client to be more universal, so he can post pictures, and JSON to server. For this do I need to un register operation class and register new class?
I'm using a subclass of AFHTTPClient
and I don't register the operation class in the instance. You can find more information about the usage of registerHTTPOperationClass
here .
I also recommend reading the comments in the AFNetworking
source to understand the usage of the register operation class:
/**
Attempts to register a subclass of `AFHTTPRequestOperation`,
adding it to a chain to automatically generate request operations from a
URL request.
@param operationClass The subclass of `AFHTTPRequestOperation` to register
@return `YES` if the registration is successful, `NO` otherwise.
The only failure condition is if `operationClass` is not a subclass of
`AFHTTPRequestOperation`.
@discussion When `enqueueHTTPRequestOperationWithRequest:success:failure`
is invoked, each registered class is consulted in turn to see if it can
handle the specific request. The first class to return `YES` when sent a
`canProcessRequest:` message is used to create an operation using
`initWithURLRequest:` and do `setCompletionBlockWithSuccess:failure:`.
There is no guarantee that all registered classes will be consulted.
Classes are consulted in the reverse order of their registration.
Attempting to register an already-registered class will move it to the
top of the list.
*/
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