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POiphone xml parse not working
 

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    <p>Please do not close this topic.I really need help. I am developing on IOS 6.Xcode-4.5.2 On a button click i get the below xml data from the server</p> <pre><code>&lt;country&gt;america&lt;/country&gt; &lt;dateOfBirth xsi:nil="true"/&gt; &lt;firstName&gt;John&lt;/firstName&gt; &lt;lastName&gt;Smith&lt;/lastName&gt; &lt;userEmail&gt;johnsmith@email.com&lt;/userEmail&gt; </code></pre> <p>I am trying to parse it and get the values.I did as per the example shown in this url <a href="http://www.edumobile.org/iphone/iphone-programming-tutorials/parsing-an-xml-file/" rel="nofollow">http://www.edumobile.org/iphone/iphone-programming-tutorials/parsing-an-xml-file/</a> But i am getting an error when the parse method is called. Instead of the appdelegate class as shown in the example url i am using the viewcontroller class.I do not want to add any code in the Appdelegate class.</p> <pre><code>*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[AppDelegate setUserDetails:]: unrecognized selector sent to instance 0x9272a40' </code></pre> <p>I am just a beginner in iphone programming.So i need help in parsing this successfully and i just want to get the values somehow so that i can use them to show on screen in some labels. Below are codes for 6 files(Viewcontroller.h &amp; m,User.h &amp; m,Xmlparser.h &amp; m)</p> <pre><code>//ViewController.h #import &lt;UIKit/UIKit.h&gt; #import "GlobalVariable.h" #import "QuotesViewController.h" @interface ViewController : UIViewController &lt;NSXMLParserDelegate,UIApplicationDelegate,NSStreamDelegate,UIAlertViewDelegate,WriteProtocol&gt; { QuotesViewController *quoteobj; NSMutableArray *userDetails; } @property (retain, nonatomic) IBOutlet UITextField *txtUsername; @property (retain, nonatomic) IBOutlet UITextField *txtPassword; @property (retain, nonatomic) NSInputStream *inputStream; @property (retain, nonatomic) NSOutputStream *outputStream; @property (nonatomic, retain) NSMutableArray *messages; @property (retain, nonatomic) IBOutlet UILabel *label1; - (IBAction)btnLogin:(id)sender; - (IBAction)btnExit:(id)sender; - (void)initNetworkCommunication; - (void)readIn:(NSString *)s; - (void)writeOut:(NSString *)s; @property (nonatomic, retain) NSMutableArray *userDetails; @end //ViewController.m #import "ViewController.h" #import "NewTabViewController.h" #import "QuotesViewController.h" #import "XMLParser.h" @implementation ViewController @synthesize txtPassword,txtUsername,inputStream, outputStream,messages,label1,userDetails; - (void)viewDidLoad { [super viewDidLoad]; quoteobj =[[QuotesViewController alloc]init]; quoteobj.myTableView = [[UITableView alloc]init]; quoteobj.myTableView.delegate=quoteobj; quoteobj.myTableView.dataSource=quoteobj; // Do any additional setup after loading the view, typically from a nib. } - (IBAction)btnLogin:(id)sender { NSLog(@"Clicked button1"); [self initNetworkCommunication]; NSString *response = [NSString stringWithFormat:@"POST\r\n\r\nTMS|Login|%@|%@",txtUsername.text,txtPassword.text]; NSLog(@"1"); [self writeOut:response]; } - (IBAction)btnExit:(id)sender { exit(0); } - (void) initNetworkCommunication { NSLog(@"initNetworkCommunication called"); CFReadStreamRef readStream; CFWriteStreamRef writeStream; CFStreamCreatePairWithSocketToHost(NULL, (CFStringRef)@"xxx.xxx.x.xx", xxxx, &amp;readStream, &amp;writeStream); inputStream = (NSInputStream *)readStream; outputStream = (NSOutputStream *)writeStream; [inputStream retain]; [outputStream retain]; [inputStream setDelegate:self]; [outputStream setDelegate:self]; [inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; [outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; [inputStream open]; [outputStream open]; } - (void)stream:(NSStream *)theStream handleEvent:(NSStreamEvent)streamEvent { NSLog(@"stream event %i", streamEvent); switch (streamEvent) { case NSStreamEventOpenCompleted: NSLog(@"Stream opened"); break; case NSStreamEventHasBytesAvailable: if (theStream == inputStream) { uint8_t buffer[1024]; int len; while ([inputStream hasBytesAvailable]) { len = [inputStream read:buffer maxLength:sizeof(buffer)]; if (len &gt; 0) { NSString *output = [[NSString alloc] initWithBytes:buffer length:len encoding:NSASCIIStringEncoding]; [self readIn:output]; if([output hasPrefix:@"JSESSIONID"]){ int len = [output length]; int lenn = len-29; sessionId = [output substringWithRange:NSMakeRange(0, lenn)]; label1.text=sessionId; NSLog(@"New String %@ LENGTH SESSUIn %i",sessionId,sessionId.length); sessionId=label1.text; NewTabViewController *so = [self.storyboard instantiateViewControllerWithIdentifier:@"newtab"]; for(UIViewController *ssa in so.viewControllers){ if([ssa isKindOfClass:[QuotesViewController class]]){ QuotesViewController *qq = (QuotesViewController *) ssa; NSLog(@"PREESENTING THIS FZZZZZZZZZZZzzaaadfsdfssdfsa"); [qq setDel:self]; } } [self presentViewController:so animated:YES completion:nil]; } } } } break; case NSStreamEventErrorOccurred: NSLog(@"Can not connect to the host!"); UIAlertView *alert =[[UIAlertView alloc]initWithTitle:@"Server says.." message:@"Due to some reason server is unavailable" delegate:self cancelButtonTitle:nil otherButtonTitles:@"Ok", nil]; [alert show]; [alert release]; break; case NSStreamEventEndEncountered: NSLog(@"NSStreamEventEndEncountered:method is called"); [theStream close]; NSLog(@"theStream is closed"); [theStream removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; NSLog(@"theStream is removed from runloop"); [theStream release]; NSLog(@"theStream is released"); NSLog(@"Server is unavailable"); theStream = nil; if(theStream==nil){ UIAlertView *alert =[[UIAlertView alloc]initWithTitle:@"Server says.." message:@"Due to some reason server is unavailable" delegate:self cancelButtonTitle:nil otherButtonTitles:@"Ok", nil]; [alert show]; [alert release]; } NSLog(@"IT reaches 1 here"); break; default: NSLog(@"Unknown event"); } }//End of stream -(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{ NSLog(@"IT reaches here"); NSString *title = [alertView buttonTitleAtIndex:buttonIndex]; if([title isEqualToString:@"Ok"]) { NSLog(@"Ok is clicked"); exit(0); } } - (void) messageReceived:(NSString *)message { NSLog(@"Entered MessageRecieved"); [messages addObject:message]; } - (void)readIn:(NSString *)s { NSLog(@"%@", s); if ([s hasPrefix:@"{"]) { if([s rangeOfString:@"instrSymbol"].location ==NSNotFound){ NSLog(@"Received a data which is not instrumentid"); } else{ NSLog(@"JSON DATA RECEIVED"); [quoteobj parseJsonData:s]; } } else if([s hasPrefix:@"&lt;"]){ NSLog(@"XML DATA RECEIVED"); NSData *xmlData= [[NSData alloc]initWithData:[s dataUsingEncoding:NSUTF8StringEncoding]]; NSXMLParser *xmlParser = [[NSXMLParser alloc] initWithData:xmlData]; XMLParser *parser = [[XMLParser alloc] initXMLParser]; //Set delegate [xmlParser setDelegate:parser]; //Start parsing the XML file. BOOL success = [xmlParser parse]; if(success) NSLog(@"No Errors"); else NSLog(@"Error Error Error!!!"); } } - (void)writeOut:(NSString *)s { if (outputStream) { NSLog(@"WRITING OUT"); uint8_t *buf = (uint8_t *)[s UTF8String]; [outputStream write:buf maxLength:strlen((char *)buf)]; NSLog(@"Writing out the following:"); NSLog(@"%@", s); } else{ NSLog(@"Noutoyt"); } } @end //XMLParser.h #import &lt;Foundation/Foundation.h&gt; @class ViewController,User; @interface XMLParser : NSObject{ NSMutableString *currentElementValue; ViewController *zappDelegate; User *aBook; } - (XMLParser *) initXMLParser; @end //XMLParser.m #import "XMLParser.h" #import "ViewController.h" #import "User.h" @implementation XMLParser - (XMLParser *) initXMLParser { [super init]; zappDelegate = (ViewController *)[[UIApplication sharedApplication] delegate]; return self; } - (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict { if([elementName isEqualToString:@"country"]) { //Initialize the array. zappDelegate.userDetails = [[NSMutableArray alloc] init]; } else if([elementName isEqualToString:@"firstName"]) { //Initialize the book. aBook = [[User alloc] init]; //Extract the attribute here. //aBook.bookID = [[attributeDict objectForKey:@"id"] integerValue]; //NSLog(@"Reading id value :%i", aBook.bookID); } NSLog(@"Processing Element: %@", elementName); } - (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string { if(!currentElementValue) currentElementValue = [[NSMutableString alloc] initWithString:string]; else [currentElementValue appendString:string]; NSLog(@"Processing Value: %@", currentElementValue); } - (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName { if([elementName isEqualToString:@"Books"]) return; if([elementName isEqualToString:@"Book"]) { [zappDelegate.userDetails addObject:aBook]; [aBook release]; aBook = nil; } else [aBook setValue:currentElementValue forKey:elementName]; [currentElementValue release]; currentElementValue = nil; } @end //User.h #import &lt;Foundation/Foundation.h&gt; @interface User : NSObject { //NSInteger bookID; NSString *firstName; //Same name as the Entity Name. NSString *lastName; //Same name as the Entity Name. NSString *userEmail; //Same name as the Entity Name. } @property (nonatomic, retain) NSString *firstName; @property (nonatomic, retain) NSString *lastName; @property (nonatomic, retain) NSString *userEmail; @end //User.m #import "User.h" @implementation User @synthesize firstName,lastName,userEmail; - (void) dealloc { [firstName release]; [lastName release]; [userEmail release]; [super dealloc]; } @end </code></pre>
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