This document provides an overview of using NSURLConnection and XML parsing to retrieve and present data from a web service in an iPhone application. It discusses connecting to URLs to get XML data, parsing the XML using delegate methods, creating a Topic class to store parsed data, and presenting the parsed XML information. The source code examples show how to make the URL connection, implement the connection and parsing delegates, parse the XML structure, and define the Topic custom class.

1. iPhone Application Development Course
NSURLConnection
(Case study)
Mr.Chalermchon Sommana
Brightest IDEA
Date: 9 May 2011

2. Outline
●Connect URL
●Receive Data from URL change to XML Parser
●Read XML Parser
●Create Class for XML
●Present XML Data

3. Overview
Connect URL
PHP
Query database
XML
MySQL
iPhone

4. Connect URL
Case Study web service URL
●
● http://203.185.96.228/sarakham2011/xplog/showFollowLike.php
● http://203.185.96.228/sarakham2011/xplog/checkLogin.php
●Create NSURL with string
●URLRequest
●Connection and set delegate

5. NSURLConnection delegate
●Start connection
didReceiveResponse
●Receive data from URL
didReceiveData
●End connection
connectionDidFinishLoading
●Error report
didFailWithError

6. XMLParser delegate
Start Document
●
parserDidStartDocument
Start Element
●
didStartElement
Character
●
foundCharacters
End Element
●
didEndElement
End Document
●
parserDidEndDocument

7. XML Structure
http://203.185.96.228/sarakham2011/xplog/showFollowLike.php
<ShowTopi c Fol l owLi ke>
<t opi c >
<t _i d>14238</ t _i d>
<t _t i t l e>ตรอกบ้านจีน</ t _ t i t l e >
<s t ar >45</ s t ar >
<s our c e >0111110952426710112. j pg</ s our c e >
<des c >กดดูรายละเอียด</ de s c >
</ t opi c >
…
</ ShowTopi c Fol l owLi ke >

8. Custom Class: Topic
Topic Class:{
NSInteger tid,star;
NSString *tTitle,*tSource,*tDesc;
}

9. Workshop

10. iPhone Application Development Course
NSURLConnection
Contact us
Brightest IDEA: http://www.brightest-idea.com
Mr.Chalermchon Sommana
Blog: http://adayd3sign.wordpress.com
Thank you.

11. Connection Source code

12. Connection Source code (2)

13. XMLParser Source code

14. XMLParser Source code (2)

15. XMLParser Source code (3)

16. Topic Class Source code