Why does this error occur?

Question

Why does this error occur?

i am parsing the data from web service.After parsing the few records it gives this error.Somebody please the tell me what the reason behind this error?

[NSXMLParser length]: unrecognized selector sent to instance 0x6e6d340



*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSXMLParser length]: unrecognized selector sent to instance 0x6e6d340'
*** Call stack at first throw:
(
    0   CoreFoundation                      0x026c4919 __exceptionPreprocess + 185
    1   libobjc.A.dylib                     0x028125de objc_exception_throw + 47
    2   CoreFoundation                      0x026c642b -[NSObject(NSObject) doesNotRecognizeSelector:] + 187
    3   CoreFoundation                      0x02636116 ___forwarding___ + 966
    4   CoreFoundation                      0x02635cd2 _CF_forwarding_prep_0 + 50
    5   Foundation                          0x001053e9 -[NSXMLParser parse] + 104
    6   SexOffenders                        0x00009c30 -[UserProfileVC connectionDidFinishLoading:] + 565
    7   Foundation                          0x0006e666 -[NSURLConnection(NSURLConnectionReallyInternal) sendDidFinishLoading] + 108
    8   Foundation                          0x0006e5bf _NSURLConnectionDidFinishLoading + 133
    9   CFNetwork                           0x02c569f1 _ZN19URLConnectionClient23_clientDidFinishLoadingEPNS_26ClientConnectionEventQueueE + 285
    10  CFNetwork                           0x02d1fc72 _ZN19URLConnectionClient26ClientConnectionEventQueue33processAllEventsAndConsumePayloadEP20XConnectionEventInfoI12XClientEvent18XClientEventParamsEl + 402
    11  CFNetwork                           0x02d200ea _ZN19URLConnectionClient26ClientConnectionEventQueue33processAllEventsAndConsumePayloadEP20XConnectionEventInfoI12XClientEvent18XClientEventParamsEl + 1546
    12  CFNetwork                           0x02d200ea _ZN19URLConnectionClient26ClientConnectionEventQueue33processAllEventsAndConsumePayloadEP20XConnectionEventInfoI12XClientEvent18XClientEventParamsEl + 1546
    13  CFNetwork                           0x02c4bdfe _ZN19URLConnectionClient13processEventsEv + 100
    14  CFNetwork                           0x02c4bc95 _ZN17MultiplexerSource7performEv + 247
    15  CoreFoundation                      0x026a5d7f __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
    16  CoreFoundation                      0x026041dd __CFRunLoopDoSources0 + 333
    17  CoreFoundation                      0x026037c6 __CFRunLoopRun + 470
    18  CoreFoundation                      0x02603280 CFRunLoopRunSpecific + 208
    19  CoreFoundation                      0x026031a1 CFRunLoopRunInMode + 97
    20  GraphicsServices                    0x02f292c8 GSEventRunModal + 217
    21  GraphicsServices                    0x02f2938d GSEventRun + 115
    22  UIKit                               0x002dab58 UIApplicationMain + 1160
    23  SexOffenders                        0x00002198 main + 102
    24  SexOffenders                        0x00002129 start + 53
)
terminate called after throwing an instance of 'NSException'

iphone

asked on Stack Overflow Mar 9, 2011 by

RAMAN RANA • edited Mar 9, 2011 by

Jonathon Bolster

3 Answers

'-[NSXMLParser length]: unrecognized selector sent to instance 0x6e6d340

this shows you are calling a function which is not a member function of NSXMLParser class.

actually in your code you are calling any method which can not be invoke on the obeject of NSXMLParser class.

chechk by debugging pointer.

answered on Stack Overflow Mar 9, 2011 by

Ishu • edited Mar 9, 2011 by

Ishu

I just suffered from this same issue. For me the problem was caused by this line of code:

operation.responseSerializer = [AFXMLParserResponseSerializer serializer];

This serialised the responseObject I was passing into the parser to XML but the parser expects an NSData object. Simply getting rid of that line solved the problem.

answered on Stack Overflow Oct 19, 2015 by

Hodson

I also faced the similar problem.

Fixed by changing my line

self.xmlParser = [[NSXMLParser alloc] initWithData:data];

to

self.xmlParser = (NSXMLParser *)responseObject;

I found my solution from this blog

Raywanderlick Blog

Explanation for Error

This configuration of [AFXMLParserResponseSerializer serializer] already return an initialized object and I was initializing it again using already initialized parser by considering it data object.

Commenting following line didn't work for me as suggested by @Hodson answer above and it doesn't make sense as this is default configuration of AFTNetworking library.

operation.responseSerializer = [AFXMLParserResponseSerializer serializer];

answered on Stack Overflow Jul 14, 2016 by

omair azam

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