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Hdc09   I Phone Dev Connecting To Web
 

Hdc09 I Phone Dev Connecting To Web

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    Hdc09   I Phone Dev Connecting To Web Hdc09 I Phone Dev Connecting To Web Presentation Transcript

    • iPhone Development Connecting to the cloud
    • Ninth Division real legit growing apple platforms development company in omaha, ne www.ninthdivision.com @ninthdivision Andy Peters @andypeters
    • Midwest Mobile Developers connecting all the mobile developers in the region (Nebraska, Iowa, Kansas, Missouri) http://groups.google.com/group/midwest-mobile-developers
    • Getting started with iPhone Development
    • Getting started with iPhone Development
    • flickr: kmulcahy
    • flickr: kmulcahy
    • iPhone The Cloud
    • Why? flickr: Waldo#4
    • 30 Million iPhone’s Sold as of Sept. 2009
    • 20 Million iPod Touches Sold as of Sept. 2009
    • User experience.
    • Offline usage.
    • Unreliable Connectivity.
    • Social networks.
    • More devices...
    • More devices...
    • More devices...
    • More devices...
    • iPhone users use the hell out of social apps
    • 15,604,157 Monthly Active Users Facebook for the iPhone
    • Tweetie 2 for the iPhone
    • Be unique. flickr: Erica Marshall
    • Game’s submitting scores to community.
    • Post high score to twitter.
    • Announce new user profile on Facebook.
    • Music related app uses Last.fm for data.
    • Grab data to populate a map.
    • Some devices are tied directly to the cloud.
    • MORE and MORE!
    • Connection Methods. flickr: barjack
    • Web Services ~= The Cloud
    • XML RESTful please!
    • XML There is no SOAP Client #642 or XML-RPC Client #1,203. You parse it yourself.
    • Options for Parsing XML • libxml2 • Tree-based: easy to parse, tree in memory • Event-driven: less memory, more complex managing state • Text reader: fast, easy to write • NSXMLParser • Event-driven: simpler but less powerful than libXML • No NSXMLDocument on iPhone • expat too!!!
    • XML Code NSXMLParser *parser = [[NSXMLParser alloc]initWithData:....];
    • XML Code NSXMLParser *parser = [[NSXMLParser alloc]initWithData:....];
    • XML [delegate] Code
    • XML [delegate] Code
    • XML Docs. • “Event Driven XML Programming in Cocoa” - ADC • NSXMLParser.h / Supporting doc. • NSXMLParserDelegate.h / Supporting doc. • Sample code: XMLPerformance and SeismicXML • Google: cocoa + nsxmlparser
    • JSON JavaScript Object Notation
    • JavaScript Object Notation • More lightweight than XML • Similar to a Property List • arrays, dictionaries, strings, numbers • Open Source json-framework wrapper for Objective-C • no “official” Apple library (yet)
    • JavaScript Object Notation • If I have a choice, I prefer using JSON • Lightweight • Fast • Easy to parse and map to objects.
    • JSON Looks like { “name” : “Hearful Andrena”, “pets” : 23, “poop-scooping-service” : false, “pet-names” : [“Hanna”, “Nemo”} }
    • Parsing JSON #import <JSON/JSON.h> // Get a JSON string NSString *jsonString = ....; // Parsing will result in Foundation objects id object = [jsonString JSONValue];
    • Using JSON-framework // Create data. NSDictionary *dictionary = ...; // converts into a JSON spring. jsonString = [dictionary JSONRepresentation];
    • UIWebView
    • Best Practices
    • Asynchronous Never parse on the main thread.
    • NSOperation
    • Never assume you know the size of the server response.
    • Delegates methods
    • Show progress.
    • Debugging.
    • Caching
    • Libraries, Frameworks and Wrappers flickr: (Erik)
    • MGTwitterEngine
    • ObjectiveFlickr
    • Facebook Connect
    • iPhone on Rails
    • ASIHTTPRequest
    • Development Demos flickr: TheNixer
    • Development Demos flickr: TheNixer
    • Questions ? flickr: Jim in Times Square
    • ninth Division real legit growing apple platforms development company in omaha, ne www.ninthdivision.com @ninthdivision