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Afnetworking understand

2022-07-26 21:56:00 【51CTO】

AFNetworking understand

AFNetworking It is a likable Network Library , Apply to iOS as well as Mac OS X. It's built on NSURLConnection, NSOperation, And other familiar Foundation Above technology . It has a good architecture , rich api, And modular construction , It makes it very easy to use . for example , He can use a very easy way from a url To get json data :

           
           
            
            NSURL *url = [NSURL URLWithString:@"http://api.twitter.com/1/statuses/public_timeline.json"];
           
           
           
           
            
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            NSURLRequest *request = [NSURLRequest requestWithURL:url];
           
           
           
           
            
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            AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) {
           
           
           
           
            
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            NSLog(@"Public Timeline: %@", JSON);
           
           
           
           
            
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            } failure:nil];
           
           
           
           
            
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            [operation start];
           
           
           
           
            
            1.
           
           

1	NSURL *url = [NSURL URLWithString:@"http://api.twitter.com/1/statuses/public_timeline.json"]; 1.
2	NSURLRequest *request = [NSURLRequest requestWithURL:url]; 1.
3	AFJSONRequestOperation operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest request, NSHTTPURLResponse *response, id JSON) { 1.
4	NSLog(@"Public Timeline: %@", JSON); 1.
5	} failure:nil]; 1.
6	[operation start]; 1.

How to get started

download AFNetworking Then try to use the example inside
read “Getting Started” guide, FAQ, perhaps other articles in the wiki
see Complete documentation
see NSScreencast episode about AFNetworking Get a quick reference , To quickly apply to your app in
There is a problem ? Stack Overflow Is the best place to find the answer

review

CORE:

AFURLConnectionOperation: One NSOperation Realized NSURLConnection

HTTP Requests:

AFHTTPRequestOperation:AFURLConnectionOperation Subclasses of , When request The protocol used is HTTP and HTTPS when , It compresses the used to decide request Status code and content type of success .

AFJSONRequestOperation:AFHTTPRequestOperation A subclass of , For downloading and processing jason response data .

AFXMLRequestOperation:AFHTTPRequestOperation A subclass of , For downloading and processing xml response data .

AFPropertyListRequestOperation:AFHTTPRequestOperation A subclass of , For downloading and processing property list response data .

HTTP CLIENT:

AFHTTPClient: Capture a based on http Protocol of the network application of the public communication mode . contain :

Use basic url Relevant path to only do request
by request Automatically add settings http headers.
Use http Basic certificate or OAuth To verify request
citing client To make the requests Manage a NSOperationQueue
from NSDictionary Generate a query string or http bodies.
from request Build multiple parts in
Automatic parsing http response The data is the corresponding performance data
Monitor and respond to changes in network accessibility testing .

IMAGES

AFImageRequestOperation: One AFHTTPRequestOperation Subclasses of , For downloading and processing pictures .

UIImageView+AFNetworking: Add some methods to UIImageView in , In order to URL Load remote pictures asynchronously in

Example program

XML REQUEST

           
           
            
            NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://api.flickr.com/services/rest/?method=flickr.groups.browse&api_key=b6300e17ad3c506e706cb0072175d047&cat_id=34427469792%40N01&format=rest"]];
           
           
           
           
            
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            AFXMLRequestOperation *operation = [AFXMLRequestOperation XMLParserRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, NSXMLParser *XMLParser) {
           
           
           
           
            
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            XMLParser.delegate = self;
           
           
           
           
            
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            [XMLParser parse];
           
           
           
           
            
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            } failure:nil];
           
           
           
           
            
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            [operation start];
           
           
           
           
            
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1	NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://api.flickr.com/services/rest/?method=flickr.groups.browse&api_key=b6300e17ad3c506e706cb0072175d047&cat_id=34427469792%40N01&format=rest"]]; 1.
2	AFXMLRequestOperation operation = [AFXMLRequestOperation XMLParserRequestOperationWithRequest:request success:^(NSURLRequest request, NSHTTPURLResponse response, NSXMLParser XMLParser) { 1.
3	XMLParser.delegate = self; 1.
4	[XMLParser parse]; 1.
5	} failure:nil]; 1.
6	[operation start]; 1.

IMAGE REQUEST

1	UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 100.0f, 100.0f)]; 1.
2	[imageView setImageWithURL:[NSURL URLWithString:@"http://i.imgur.com/r4uwx.jpg"] placeholderImage:[UIImage imageNamed:@"placeholder-avatar"]]; 1.

            
            UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 100.0f, 100.0f)];
           
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            [imageView setImageWithURL:[NSURL URLWithString:@"http://i.imgur.com/r4uwx.jpg"] placeholderImage:[UIImage imageNamed:@"placeholder-avatar"]];
           
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API CLIENT REQUEST

           
           
            
            // AFGowallaAPIClient is a subclass of AFHTTPClient, which defines the base URL and default HTTP headers for NSURLRequests it creates
           
           
           
           
            
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            [[AFGowallaAPIClient sharedClient] getPath:@"/spots/9223" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
           
           
           
           
            
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            NSLog(@"Name: %@", [responseObject valueForKeyPath:@"name"]);
           
           
           
           
            
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            NSLog(@"Address: %@", [responseObject valueForKeyPath:@"address.street_address"]);
           
           
           
           
            
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            } failure:nil];
           
           
           
           
            
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1	// AFGowallaAPIClient is a subclass of AFHTTPClient, which defines the base URL and default HTTP headers for NSURLRequests it creates 1.
2	[[AFGowallaAPIClient sharedClient] getPath:@"/spots/9223" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) { 1.
3	NSLog(@"Name: %@", [responseObject valueForKeyPath:@"name"]); 1.
4	NSLog(@"Address: %@", [responseObject valueForKeyPath:@"address.street_address"]); 1.
5	} failure:nil]; 1.

FILE UPLOAD WITH PROGRESS CALLBACK

           
           
            
            NSURL *url = [NSURL URLWithString:@"http://api-base-url.com"];
           
           
           
           
            
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            AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];
           
           
           
           
            
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            NSData *imageData = UIImageJPEGRepresentation([UIImage imageNamed:@"avatar.jpg"], 0.5);
           
           
           
           
            
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            NSMutableURLRequest *request = [httpClient multipartFormRequestWithMethod:@"POST" path:@"/upload" parameters:nil constructingBodyWithBlock: ^(id <AFMultipartFormData>formData) {
           
           
           
           
            
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            [formData appendPartWithFileData:imageData name:@"avatar" fileName:@"avatar.jpg" mimeType:@"image/jpeg"];
           
           
           
           
            
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            }];
           
           
           
           
            
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            AFHTTPRequestOperation *operation = [[[AFHTTPRequestOperation alloc] initWithRequest:request] autorelease];
           
           
           
           
            
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            [operation setUploadProgressBlock:^(NSInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) {
           
           
           
           
            
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            NSLog(@"Sent %lld of %lld bytes", totalBytesWritten, totalBytesExpectedToWrite);
           
           
           
           
            
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            }];
           
           
           
           
            
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            [operation start];
           
           
           
           
            
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01	NSURL *url = [NSURL URLWithString:@"http://api-base-url.com"]; 1.
02	AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url]; 1.
03	NSData *imageData = UIImageJPEGRepresentation([UIImage imageNamed:@"avatar.jpg"], 0.5); 1.
04	NSMutableURLRequest *request = [httpClient multipartFormRequestWithMethod:@"POST" path:@"/upload" parameters:nil constructingBodyWithBlock: ^(id <AFMultipartFormData>formData) { 1.
05	[formData appendPartWithFileData:imageData name:@"avatar" fileName:@"avatar.jpg" mimeType:@"image/jpeg"]; 1.
06	}]; 1.
07	1.
08	AFHTTPRequestOperation *operation = [[[AFHTTPRequestOperation alloc] initWithRequest:request] autorelease]; 1.
09	[operation setUploadProgressBlock:^(NSInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) { 1.
10	NSLog(@"Sent %lld of %lld bytes", totalBytesWritten, totalBytesExpectedToWrite); 1.
11	}]; 1.
12	[operation start]; 1.

STREAMING REQUEST

           
           
            
            NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://localhost:8080/encode"]];
           
           
           
           
            
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            AFHTTPRequestOperation *operation = [[[AFHTTPRequestOperation alloc] initWithRequest:request] autorelease];
           
           
           
           
            
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            operation.inputStream = [NSInputStream inputStreamWithFileAtPath:[[NSBundle mainBundle] pathForResource:@"large-image" ofType:@"tiff"]];
           
           
           
           
            
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            operation.outputStream = [NSOutputStream outputStreamToMemory];
           
           
           
           
            
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            [operation start];
           
           
           
           
            
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1	NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://localhost:8080/encode"]]; 1.
2	1.
3	AFHTTPRequestOperation *operation = [[[AFHTTPRequestOperation alloc] initWithRequest:request] autorelease]; 1.
4	operation.inputStream = [NSInputStream inputStreamWithFileAtPath:[[NSBundle mainBundle] pathForResource:@"large-image" ofType:@"tiff"]]; 1.
5	operation.outputStream = [NSOutputStream outputStreamToMemory]; 1.
6	[operation start]; 1.