iOS development--user clicks Frequently, multiple asynchronous network request cancellation issues?

I. Description of the business environment

When a view is added with two tableview as Subview, two tableview are maintable and subtable respectively.

When the user clicks on a piece of data on maintable, it sends the data in the network request subtable.

Where there is a problem: for example, when the user clicks on the data on the Maintable frequently, the data in the subtable will appear. So how to cancel the previous network request???

Note: Network requests are asynchronous requests

Ii. solution 1. Instantiate a Afhttprequestoperationmanager object

Afhttprequestoperationmanager *manager = [[Afhttprequestoperationmanager alloc] init];

2. Call the Post method to return a Afhttprequestoperation object

    Afhttprequestoperation *operation = [Manager post:urlstr parameters:param success:^ (afhttprequestoperation *operation , id responseobject) {    } failure:^ (Afhttprequestoperation *operation, Nserror *error) {    }];

3. Determine if the Operation object has been instantiated, and if so, cancel the request operation, and if no, re-execute steps 1th and 22 above.

    if (subtableoperation)//If a request has been made, cancel it directly.    {        [subtableoperation Cancel];    }    The request does not exist, re-instantiates a    subtableoperation = [apitool getsubtablelistdata:@ "Test" callback:^ (NSNumber *success, ID Response) {        //processing network callback data and Reloaddata    }];    [Subtableoperation start];

Specific code: Demo_operationofcancel

Transferred from: http://blog.5ibc.net/p/88308.html

iOS development--user clicks Frequently, multiple asynchronous network request cancellation issues?