Brooklyn iOS Developer Meetup Presenter: Mattt Thompson Topic: Everybody loves AFNetworking Location: NYU Poly Incubator DUMBO Brooklyn, NY http://www.meetup.com/The-Brooklyn-iPhone-and-iPad-Developer-Meetup/

1. Everybody Loves
AFNetworking
...and So Can You!
Mattt Thompson
Heroku

2. @mattt

4. AFHTTPClient
JSON XML plist Image
AFHTTPRequestOperation
AFURLConnectionOperation

5. AFURLConnectionOperation

6. NSURLConnection
+
NSOperation

7. NSURLConnection
• High-Level Networking API
• Delegate-based Callbacks

8. URL Loading System
• URL Loading • Authentication &
Credentials
• NSURLConnection
• NSURLRequest • NSURLCredential
• NSURLResponse • NSURLAuthenticationChallenge
• Caching • Cookies
• NSURLCache • NSHTTPCookie
• NSURLCacheResponse
• Protocols
• NSProtocol

9. NSURLConnection Delegate Methods
- connection:didReceiveResponse:
- connection:didReceiveData:
- connectionDidFinishLoading:
- connection:didFailWithError:
- connection:willCacheResponse:

10. NSOperation
• Atomic Unit of Computation
• Concurrently executed in NSOperationQueue
• Encapsulates State
• started, executing, finished
• Cancelable
• Completion Blocks

11. AFURLConnectionOperation
• NSOperation Subclass
• Implements NSURLConnection Delegate Methods
• Supports Streaming Uploads / Downloads
• Stores Request, Response, Data

12. NSURL *URL = [NSURL URLWithString:@"http://httpbin.org/ip"];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
AFURLConnectionOperation *operation =
[[AFURLConnectionOperation alloc] initWithRequest:request];
operation.completionBlock = ^ {
NSLog(@"Complete: %@", operation.responseString);
};
[operation start];

13. AFURLConnectionOperation

14. AFHTTPRequestOperation
AFURLConnectionOperation

15. AFHTTPRequestOperation
• AFURLConnectionOperation Subclass
• Adds Knowledge Specific to HTTP
• Status Codes
• MIME Types
• Adds Success / Failure Distinction

16. NSURL *URL = [NSURL URLWithString:@"http://httpbin.org/robots.txt"];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
AFHTTPRequestOperation *operation =
[[AFHTTPRequestOperation alloc] initWithRequest:request];
[operation setCompletionBlockWithSuccess:
^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(@"Success: %@", operation.responseString);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"Failure: %@", error);
}];
[operation start];

17. AFHTTPRequestOperation
AFURLConnectionOperation

18. JSON XML plist Image
AFHTTPRequestOperation
AFURLConnectionOperation

19. Operations should
encapsulate everything it
takes to get what you want

20. Success / Failure
JSON XML Image
Status 2XX 2XX 2XX
Code
image/tiff
Content application/json
text/json
application/xml image/jpeg
Type text/javascript
text/xml image/gif
image/png

21. NSURL *URL = [NSURL URLWithString:@"http://httpbin.org/get"];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
AFJSONRequestOperation *operation =
[AFJSONRequestOperation JSONRequestOperationWithRequest:request
success:^(NSURLRequest *request, NSHTTPURLResponse *response, id
JSON) {
NSLog(@"Success :%@", JSON);
} failure:^(NSURLRequest *request, NSHTTPURLResponse *response,
NSError *error, id JSON) {
NSLog(@"Failure: %@", error);
}];
[operation start];

22. NSURL *URL = [NSURL URLWithString:@"http://example.com/avatar.jpg"];
[cell.imageView setImageWithURL:URL
placeholderImage:[UIImage imageNamed:@"placeholder"]];

23. JSON XML plist Image
AFHTTPRequestOperation
AFURLConnectionOperation

24. AFHTTPClient
JSON XML plist Image
AFHTTPRequestOperation
AFURLConnectionOperation

25. AFHTTPClient
• Designed to Work for Single Endpoint
• Set Default Headers
• Authorization, Accept, Accept-Language, etc.
• Encode Parameters to Query String or Message
Body
• Handle Multipart Form Request Body
Construction
• Manage Request Operations

26. • Create NSURLRequest
• Create AFHTTPRequestOperation
• Enqueue Operations

27. AFHTTPClient
JSON XML plist Image
AFHTTPRequestOperation
AFURLConnectionOperation

28. Collection UIKit
+JSON Extensions
OAuth
AFHTTPClient
JSON XML plist Image
S3
AFHTTPRequestOperation
AFURLConnectionOperation

29. AFNetworking Ecosystem
• AFOAuth1Client & AFOAuth2Client
• AFAmazonS3Client
• AFDownloadRequestOperation
• AFIncrementalStore
• AFKissXMLRequestOperation
• AFCollectionJSONRequestOperation
• AFHTTPRequestOperationLogger

30. AFFuture
• Working Towards 1.0
• AFIncrementalStore
• More Examples &
Documentation
• Modular CocoaPods
Specification

31. How You Can Help
• Documentation & Guides
• Especially non-English
• Pitch In on Stack Overflow
• Issues
• Pull Requests

32. Thanks!