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Krunal SataoKrunal Satao 

iOS app crashes while setting value of field in date format

iOS app crashes while setting value of field in date format. Here is what happens we change a date field in our app, we create a salesforce request using salesforce REST API. The SFRestAPI class cannot convert that date filed into proper serialized JSON and causes app to crash throwing an error -  *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Invalid type in JSON write (__NSDate)'

And here is the stack trace - 

*** First throw call stack:

(

    0   CoreFoundation                      0x043731e4 __exceptionPreprocess + 180

    1   libobjc.A.dylib                     0x03f648e5 objc_exception_throw + 44

    2   CoreFoundation                      0x04372fbb +[NSException raise:format:] + 139

    3   Foundation                          0x03a9b2e0 _writeJSONValue + 771

    4   Foundation                          0x03a9f7a2 ___writeJSONObject_block_invoke + 225

    5   CoreFoundation                      0x043fca7a __65-[__NSDictionaryM enumerateKeysAndObjectsWithOptions:usingBlock:]_block_invoke + 106

    6   CoreFoundation                      0x043fc97e -[__NSDictionaryM enumerateKeysAndObjectsWithOptions:usingBlock:] + 190

    7   CoreFoundation                      0x04361125 -[NSDictionary enumerateKeysAndObjectsUsingBlock:] + 53

    8   Foundation                          0x03a9f35f _writeJSONObject + 363

    9   Foundation                          0x03a9b1ec _writeJSONValue + 527

    10  Foundation                          0x03a9af9d -[_NSJSONWriter dataWithRootObject:options:error:] + 125

    11  Foundation                          0x03a9db57 +[NSJSONSerialization dataWithJSONObject:options:error:] + 369

    12  intouch.incall                      0x00b1bfc1 NRMA__ptrIntPtrParamHandler + 124

    13  intouch.incall                      0x00b1b504 NRMA__blk_ptrIntPtrParamHandler + 64

    14  intouch.incall                      0x004efbee +[SFJsonUtils JSONDataRepresentation:] + 90

    15  intouch.incall                      0x004efb34 +[SFJsonUtils JSONRepresentation:] + 43

    16  intouch.incall                      0x0084b233 __22-[SFRestRequest send:]_block_invoke + 43

    17  intouch.incall                      0x00851b01 -[MKNetworkOperation encodedPostDataString] + 141

    18  intouch.incall                      0x00857585 -[MKNetworkOperation bodyData] + 1872

    19  intouch.incall                      0x00858404 -[MKNetworkOperation start] + 1179

    20  Foundation                          0x03a2df44 __NSOQSchedule_f + 62

    21  libdispatch.dylib                   0x046b74d0 _dispatch_client_callout + 14

    22  libdispatch.dylib                   0x046a3fe0 _dispatch_async_redirect_invoke + 202

    23  libdispatch.dylib                   0x046b74d0 _dispatch_client_callout + 14

    24  libdispatch.dylib                   0x046a5eb7 _dispatch_root_queue_drain + 291

    25  libdispatch.dylib                   0x046a6127 _dispatch_worker_thread2 + 39

    26  libsystem_pthread.dylib             0x049e6dab _pthread_wqthread + 336

    27  libsystem_pthread.dylib             0x049eacce start_wqthread + 30

)

libc++abi.dylib: terminating with uncaught exception of type NSException
 
Phil Bergner 8Phil Bergner 8
I believe this might have been an iOS issue. Try upgrading to iOS8.3 and see if it fixed the problem.
Gaurav KheterpalGaurav Kheterpal
I suspect you are doing something wrong in your code. I'd usually store my data in NSString first and then convert it into NSDate or do something like
  
- (NSString *) convertDateToDateString :(NSDate *) date {

    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setTimeZone:[NSTimeZone localTimeZone]];
    NSLocale *locale = [NSLocale currentLocale];
    NSString *dateFormat = [NSDateFormatter dateFormatFromTemplate:@"hh mm" options:0 locale:locale];
    [dateFormatter setDateFormat:dateFormat];
    [dateFormatter setLocale:locale];
    NSString *dateString = [dateFormatter stringFromDate:date];
    return dateString;
}

Try this and hopefully it should resolve your issue.

If my answer helps resolve your query, please mark it as the 'Best Answer' & upvote it to benefit others and improve the overall quality of Discussion Forums.

Gaurav Kheterpal

Developer Forums Moderator| Certified Force.com Developer| Dreamforce Speaker| Salesforce Mobile Evangelist