AFNetworking

AFNetworking Houston iPhone Developers Meetup October 25th, 2011

2Who?• Full time contractiOSdeveloper out ofTheWoodlands • Contact me athttp://ipanemalabs.com• Founderof Houston iPhone Developers Meetup• Organizer of Houston PHP Users Group• Personal iPhone apps onstoresince 2008• Personal site athttp://pessoal.orgAFNetworking

3Tonight’s session• Overview of what AFNetworking provides • Background on the project • Alternatives to it• Bunch of code examples• Feel free to ask questionsAFNetworking

4Background• Open-source library shared by Gowalla • Available at https://github.com/gowalla/AFNetworking• Created in the development of Gowalla for iPhone • Inspired by an Apple sample project (MVC Networking)• Uses Objective-C blocks for everything (requires iOS 4+)• MIT licenseAFNetworking

5More background• Main authors very active behind the project • Mattt Thompson - http://mattt.me • Scott Raymond - http://scottraymond.netAFNetworking

6Alternatives• ASIHTTPRequest • Convenience wrapper with lots of useful features • Author decided to stop maintaining it• NSURLConnection • Lots of tedious / boilerplate code to manage HTTP requests• Other options • RestKit - http://restkit.org • SVHTTPRequest - http://github.com/samvermette/SVHTTPRequestAFNetworking

7AFNetworking features• Uses NSOperation for scheduling and concurrency• Blocks for request completion / failure callbacks• Convenience features: • Requests for JSON, XML, Image data, etc • File upload with progress callback • API client requestAFNetworking

8Installation• Clone AFNetworking github project• Copy “AFNetworking” sub-folder to your own Xcode project• Clone JSONKit github project • https://github.com/johnezang/JSONKit• Copy JSONKit.h and JSONKit.m to your own Xcode projectAFNetworking

9Great documentation• Provides appledoc compatible documentation • Appledoc available at https://github.com/tomaz/appledoc• git clone https://github.com/tomaz/appledoc.git • sudo sh install-appledoc.sh • Installs on /usr/local/bin• git clone https://github.com/gowalla/AFNetworking.git • cd AFNetworking • appledoc -p AFNetworking -c "Gowalla" --company-id com.gowalla AFNetworking/*.hAFNetworking

10DocumentationAFNetworking

11Blocks• Closures for Objective-C • Similar in nature to JavaScript closures, but slightly different • Great for callback-centric code • Available since iOS 4 • Used a lot in Grand Central Dispatch (GCD)• Great introduction documentation available from Apple • http://developer.apple.com/library/ios/#documentation/cocoa/Conceptu al/Blocks/Articles/00_Introduction.htmlAFNetworking

12BlocksAFNetworking

13Core classes• Library core is AFURLConnectionOperation • NSOperation subclass to make asynchronous requests• Subclasses • AFJSONRequestOperation – JSON requests • AFXMLRequestOperation – XML requests • AFPropertyListRequestOperation – Plist requests • AFImageRequestOperation – Image requestsAFNetworking

14JSON request• Dependency on JSONKit• Very high performance JSON library• Benchmark results available at https://github.com/johnezang/JSONKit • Claimed to be faster than parsing/serializing binary plists. • Results contested by TouchJSON authorAFNetworking

15JSON requestAFNetworking

16XML request• Similar to JSON request, but no automatic parsing of payload• Block callback allows you to kick off the XML parsingAFNetworking

17XML requestAFNetworking

18Image request• Load remote images on UIImageView asynchronously • Alternative to EGOImageView and similar libraries• Great on table view cells, async requests get canceled as cells are re-used• Simple interface to load images • -[UIImageView setImageWithURL:placeholderImage:] • More control available through a different methodAFNetworking

19Image requestAFNetworking

20API request• AFHTTPClient at the core • Detects appropriate operation for each request • AFGowallaAPIClient subclass of that• Easy to extend core class with the business logic for your own web serviceimplementationAFNetworking

21AFGowallaAPIClientAFNetworking

22More information• AFNetworking post on Gowalla’s Engineering blog • http://engineering.gowalla.com/2011/10/24/afnetworking/• Github pages • Great information on issue list, network graph• Mattt’s profile page - https://github.com/mattt/ • TTTAttributedLabel - https://github.com/mattt/TTTAttributedLabel • FormatterKit - https://github.com/mattt/FormatterKitAFNetworking

Contact:

http://ipanemalabs.com	261
http://www.elobyte.de	13
http://elobyte.de	7
http://feeds.feedburner.com	2
http://twitter.com	1

AFNetworking

by joaopmaia

Accessibility

Categories

Upload Details

Usage Rights

5 Embeds 284

Statistics

AFNetworking Presentation Transcript