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POXML parsing - iPhone
 

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  1. POXML parsing - iPhone
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    <p>Hello I am new to iPhone development. I have created one application that consume data from web service. And it works fine but I have a problem with parsing.</p> <p>The xml data that I get from the web service is:</p> <pre><code>&lt;div style="border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;"&gt; &lt;h4&gt;A PHP Error was encountered&lt;/h4&gt; &lt;p&gt;Severity: Warning&lt;/p&gt; &lt;p&gt;Message: session_start() [&lt;a href='function.session-start'&gt;function.session-tart&lt;/a&gt;]: Cannot send session cookie - headers already sent by (output started at D:\xampp\htdocs\system \application\controllers\isignin.php:4)&lt;/p&gt; &lt;p&gt;Filename: libraries/session.php&lt;/p&gt; &lt;p&gt;Line Number: 146&lt;/p&gt; &lt;/div&gt;&lt;div style="border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;"&gt; &lt;h4&gt;A PHP Error was encountered&lt;/h4&gt; &lt;p&gt;Severity: Warning&lt;/p&gt; &lt;p&gt;Message: session_start() [&lt;a href='function.session-start'&gt;function.session-start&lt;/a&gt;]: Cannot send session cache limiter - headers already sent (output started at D:\xampp\htdocs\6d\system \application\controllers\isignin.php:4)&lt;/p&gt; &lt;p&gt;Filename: libraries/session.php&lt;/p&gt; &lt;p&gt;Line Number: 146&lt;/p&gt; &lt;/div&gt;&lt;div style="border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;"&gt; &lt;h4&gt;A PHP Error was encountered&lt;/h4&gt; &lt;p&gt;Severity: Warning&lt;/p&gt; &lt;p&gt;Message: Cannot modify header information - headers already sent by (output started at D:\xampp\htdocs\6d\system\application\controllers\isignin.php:4)&lt;/p&gt; &lt;p&gt;Filename: codeigniter/Common.php&lt;/p&gt; &lt;p&gt;Line Number: 360&lt;/p&gt; &lt;/div&gt;&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;xml&gt;&lt;item&gt;&amp;lt;?xml version="1.0" encoding="UTF-8"?&amp;gt;&amp;lt;newblock&amp;gt;&amp;lt;name&amp;gt;abcde &amp;lt;/name&amp;gt;&amp;lt;password&amp;gt;12345678&amp;lt;/password&amp;gt;&amp;lt;/newblock&amp;gt;&lt;/item&gt;&lt;/xml&gt; </code></pre> <p>This is what I call from connectionDidFinishLoading method:</p> <pre><code>-(void)connectionDidFinishLoading:(NSURLConnection *)connection { NSLog(@"DONE. Received Bytes: %d", [webData length]); if (xmlParser) { [xmlParser release]; } xmlParser = [[NSXMLParser alloc] initWithData: webData]; [xmlParser setDelegate: self]; [xmlParser setShouldResolveExternalEntities:YES]; [xmlParser parse]; [connection release]; [webData release]; } </code></pre> <p>The following are the parsing methods used:</p> <pre><code>-(void) parser:(NSXMLParser *) parser didStartElement:(NSString *) elementName namespaceURI:(NSString *) namespaceURI qualifiedName:(NSString *) qName attributes:(NSDictionary *) attributeDict { if( [elementName isEqualToString:@"GetWeatherResult"]) { if (!soapResults) { soapResults = [[NSMutableString alloc] init]; } elementFound = YES; } } -(void)parser:(NSXMLParser *) parser foundCharacters:(NSString *)string { if (elementFound) { [soapResults appendString: string]; } } -(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName { if ([elementName isEqualToString:@"GetWeatherResult"]) { //---displays the country--- NSLog(soapResults); UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Current Temperature!" message:soapResults delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; [alert release]; [soapResults setString:@""]; elementFound = FALSE; } } </code></pre> <p>My query is : I want to extract the <strong>"name" tag</strong> with value <strong>"abcde"</strong> from the received XML data.<br> But when I search for <strong>"name"</strong> with value <strong>"abcde"</strong> in the above xml data received, parser can't find it because of <strong>&amp;qt, &amp;lt</strong> etc. </p> <p>1) How to fix my NSMutableData to have normal values (&lt;, > etc.)? Any inbuilt functions of NSMutableData to replace <strong>&amp;lt, &amp;gt</strong> with <strong>&lt;, ></strong>? Or<br> 2) Is there any thing missing (or doing wrong) while generating the xml data at the server side or Am I missing anything while parsing at the client side (on iPhone) Or<br> 3) Any other solution to fix the above problem. </p> <p>Thanks in advance.</p>
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