IOS using afnetworking

Download: Web site-GitHub

Two environments:

Libraries that need to be introduced-corelocation.framework

Systemconfiguration.framework

Mobilecoreservices.framework

Security.framework

Required in an ARC environment-non-ARC engineering-please add-FOBJC-ARC

Three structures:

1:afhttpclient-Provides a convenient network interface, including default headers, authentication, whether connected to the network, batch processing operations, query string parameter serialization, multiple form requests

2:afhttprequestoperation--

And its subclass can be based on the HTTP status and content column down to distinguish whether the request was successful

3:afurlconnectionoperation--

And its subclasses inherit Nsoperation, allowing requests to be canceled, paused/resumed, and managed by Nsoperationqueue.

4:afurlconnectionoperation--

Allows you to easily complete uploads and downloads, process validation, monitor upload and download progress, and control the cache.

Four uses:

Usage Scenario 1: Request API data

Method 1--

Create a Afhttpclient instance

afhttpclient * client = [[Afhttpclient alloc] initwithbaseurl:[nsurl urlwithstring:@ "http://api.jiepang.com"];

There must be a baseURL here--or an exception will be thrown--

Create a Nsurlrequest instance

Nsdictionary * params = @{@ "Apiver": @ "4", @ "id": @ "830755858", @ "Extra_info": @ "1"};

Nsurlrequest * request = [client requestwithmethod:@ "POST"

path:@ "Users/show"

Parameters:params];

@param method Network request, such as get,post,put,delete, cannot be nil--

The combination of @param path and BaseURL becomes a URL--in layman's words, the interface we call--for example, I want to call Http://api.jiepang.com/users/show, the interface--then BaseURL for HT Tp://api.jiepang.com--Path is users/show

@param parameters Network Request parameter--http://api.jiepang.com/v1/users/show?id=123--id=123 is this parameter

Create a Afhttprequestoperation instance for network links

afhttprequestoperation * operation = [client Httprequestoperationwithrequest:request success:^ ( Afhttprequestoperation *operation, id responseobject) {

NSLog (@ "success obj = =%@", responseobject);

} failure:^ (Afhttprequestoperation *operation, Nserror *error) {

NSLog (@ "faild, error = =%@", error);

}];

[Operation start];

So-a simple call is OK-

Of course, it is possible to use other methods of encapsulation-

-(void) GetPath: (NSString *) path

Parameters: (nsdictionary *) parameters

Success: (void (^) (afhttprequestoperation *operation, id responseobject)) success

Failure: (void (^) (afhttprequestoperation *operation, Nserror *error)) failure;

-(void) Postpath: (NSString *) path

Parameters: (nsdictionary *) parameters

Success: (void (^) (afhttprequestoperation *operation, id responseobject)) success

Failure: (void (^) (afhttprequestoperation *operation, Nserror *error)) failure;

-(void) Putpath: (NSString *) path

Parameters: (nsdictionary *) parameters

Success: (void (^) (afhttprequestoperation *operation, id responseobject)) success

Failure: (void (^) (afhttprequestoperation *operation, Nserror *error)) failure;

-(void) Deletepath: (NSString *) path

Parameters: (nsdictionary *) parameters

Success: (void (^) (afhttprequestoperation *operation, id responseobject)) success

Failure: (void (^) (afhttprequestoperation *operation, Nserror *error)) failure;

-(void) Patchpath: (NSString *) path

Parameters: (nsdictionary *) parameters

Success: (void (^) (afhttprequestoperation *operation, id responseobject)) success

Failure: (void (^) (afhttprequestoperation *operation, Nserror *error)) failure;

Eliminates the time to assemble resquest-

such as

Method Two--

[Client Getpath:path

Parameters:params

success:^ (afhttprequestoperation *operation, id responseobject) {

NSString * obj = [[NSString alloc] Initwithdata:responseobject encoding:nsutf8stringencoding];

NSLog (@ "obj = =%@", obj);

} failure:^ (Afhttprequestoperation *operation, Nserror *error) {

NSLog (@ "faild--");

}];

This is the same as the effect above--

We see that the data returned in the front is all nsdata--adding trouble to US--and most of our API return data is JSON--

Again-we can use the Afhttprequestoperation subclass afjsonrequestoperation to replace--

Method Three--

Nsdictionary * params = @{@ "Apiver": @ "4", @ "id": @ "830755858", @ "Extra_info": @ "1"};

afhttpclient * client = [[Afhttpclient alloc] initwithbaseurl:[nsurl urlwithstring:@ "http://api.jiepang.com"];

Nsurlrequest * request = [client requestwithmethod:@ "POST"

path:@ "Users/show"

Parameters:params];

afjsonrequestoperation * operation = [afjsonrequestoperation jsonrequestoperationwithrequest:request success:^ ( Nsurlrequest *request, nshttpurlresponse *response, id JSON) {

NSLog (@ "JSON = =%@", JSON);

} failure:^ (Nsurlrequest *request, Nshttpurlresponse *response, nserror *error, id JSON) {

NSLog (@ "faild--");

}];

[Operation start];

Use Scenario 2: Load pictures asynchronously

Afimagerequestoperation is inherited from Afhttprequestoperation--so the method is very similar--

NSString * url = @ "http://c.hiphotos.baidu.com/album/w=2048/sign=1d7ca85bac345982c58ae29238cc30ad/ F2deb48f8c5494ee7abe33362cf5e0fe99257e04.jpg ";

This is a big beauty.

Create request

Nsurlrequest * request = [nsurlrequest Requestwithurl:[nsurl Urlwithstring:url]

Cachepolicy:nsurlrequestreloadignoringlocalcachedata

TIMEOUTINTERVAL:30];

afimagerequestoperation * operation = [Afimagerequestoperation imagerequestoperationwithrequest:request

                                                                                   imageprocessingblock:^uiimage * (UIImage *image) {

                                                                                       

                                                                                       uiimage * TempImage = [UIImage Imagewithcgimage:

                                                                                                               Cgimagecreatewithimageinrect (image. Cgimage,ake (0, 0, image.size.width, image.size.height/2.0))];

                                                                                       

                                                                                       return TempImage;

                                                                                       

                                                                                   } success:^ (Nsurlrequest *request, NSHTTPURLResponse *response, UIImage *image) {

                                                                                       

                                                                                       nslog (@ "Reload image success");

                                                                                       

                                                                                       _imageview.image = image;

                                                                                   } failure:^ (Nsurlrequest *request, NSHTTPURLResponse *response, Nserror *error) {

                                                                                       

                                                                                       nslog (@ "Reload image faild, error = =%@", Error);

                                                                                       

}];

[Operation start];

There are three blocks in this method, success and failure do not say--processimageblock--is that after the picture is loaded, the block for the image processing can be nil, called before the success--

IOS using afnetworking