Intensive type:
An intensive API call is actually a call to just one class for all APIs, and then this class receives the API name, API parameters, and callback landing points (which can be target-action, or blocks, or delegate, for various modes of landing) as parameters. Then execute a method like Startrequest, which will take off according to these parameters to invoke the API, and then obtain the API data and then according to the designated landing point to land. The example is that every time a network request in Afnetworking is invoked by using Afhttpsessionmanager as the Singleton class to invoke the corresponding API. Discrete: Discrete API calls are like this, an API corresponds to a apimanager, then this apimanager only need to provide parameters to take off, the API name, the landing method has been integrated into the Apimanager.
It can be understood that there is a base class Baseapimanager, and then the subclass of the base class for the corresponding network request, the use of the network request data where the sub-class is held.
From
Http://casatwy.com/iosying-yong-jia-gou-tan-wang-luo-ceng-she-ji-fang-an.html
On the understanding of discrete and intensive API calls in Network layer