I'm trying to create a class which contains different method, each one of these methods will perform some http requests operations and return a result to the caller method.
for example:
UserOperations *op = [[UserOperations alloc] init];
int age = [op getUserAge];
the method "getUserAge" will call a web service and do some xml parsing to return a value (the age) to the caller.
what's the best and right way to implement it.
thanks
You need to implement delegate pattern here.
See Protocols and delegates in iOS. Please visit here and Apple documentation
And, also see a similar question asked on SO here
for every webservice, you should have to separate it from your controller, and then separate the controller from your UI class.
like
UILayer //invoke method of controller class and pass the delegate of viewController and selector to which at the end you want to return
Control Layer // get the data along with delegate to UIlayer and selector to uiLayer, and call the webservice
Webservice Layer // receive the data from controll layer, call the webservice from server, get the response and pass to parser layer along with its delegate(webservice)
Parser Layer // get data from webervice layer and parse it
//////////////////////////////////////////////////////
now you are going back
// webservice layer has the delegate stored in it that to UI layer along with the selecter, after parsing the responsed data, it will call the UILayer with the parsed data.
// ui layer will display/process it
