Databases
StackOverflow2013
Postsdbo
POWeird crash while accessing array objects at a given index in IOS
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POWeird crash while accessing array objects at a given index in IOS
    primarykey
    data
    text
    <p>We have the following method where we are trying to access an array object at a given index. The array is <code>resultArr</code>. When we do a <code>resultArr</code> count it gives us a result of 13. So we know that the array is not null but when we try to do <code>objectAtIndex</code> it crashes with the error. </p> <p>Function:</p> <pre><code>- (void)fetchedData:(NSData *)responseData { //parse out the json data NSError* error; NSDictionary* json = [NSJSONSerialization JSONObjectWithData:responseData //1 options:kNilOptions error:&amp;error]; NSArray *keys = [json allKeys]; NSLog(@"keys: %@",keys); NSArray* htmlAttributions = [json objectForKey:@"html_attributions"]; //2 NSArray* resultArr = (NSArray *)[json objectForKey:@"result"]; //2 NSArray* statusArr = [json objectForKey:@"status"]; //2 NSLog(@"htmlAttributions: %@",htmlAttributions); NSLog(@"result: %@", resultArr); //3 NSLog(@"status: %@", statusArr); //3 NSLog(@"resultCount: %d",[resultArr count]); [resultArr objectAtIndex:0]; } </code></pre> <p>Error:</p> <pre><code>2012-04-01 22:31:52.757 jsonParsing[5020:f803] resultCount: 13 2012-04-01 22:31:52.759 jsonParsing[5020:f803] -[__NSCFDictionary objectAtIndex:]: unrecognized selector sent to instance 0x6d2f900 2012-04-01 22:31:52.760 jsonParsing[5020:f803] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFDictionary objectAtIndex:]: unrecognized selector sent to instance 0x6d2f900' *** First throw call stack: </code></pre> <p>Thank you. </p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USJasonw
    1. USuser1306828
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POWeird crash while accessing array objects at a given index in IOS
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    1. COThis is resolved now. Thanks guys.
      singulars
      1. POWeird crash while accessing array objects at a given index in IOS
      1. USuser1306828
    2. COYou should mark the question as resolved by clicking the check mark by the correct answer.
      singulars
      1. POWeird crash while accessing array objects at a given index in IOS
      1. USIan Henry
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload