EXC_BAD_ACCESS is generated in didSelectRowAtIndexPath - objective-c

Question

Please consider this code:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
// Configure the cell.
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier] autorelease];
}
NSDictionary *dict1 = [rows objectAtIndex:indexPath.row];
NSLog(#"%#", dict1);
if ([dict1 objectForKey:#"faqQues"] != [NSNull null]) {
cell.textLabel.text = [dict1 objectForKey:#"faqQues"];
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
faqQuesID = [[rows objectAtIndex: indexPath.row] integerValue];
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
//NSString *faqQuesID = [rows objectAtIndex:indexPath.row];
NSLog(#"faqQuesID ######### %#",faqQuesID);
[prefs setInteger:faqQuesID forKey:#"faqQuesID"];
[prefs setInteger:faqTypeID forKey:#"passFaqType"];
helpDetailsViewController *hdVController = [[helpDetailsViewController alloc] initWithNibName:#"helpDetailsViewController" bundle:nil];
[self presentModalViewController:hdVController animated:YES];
[hdVController release];
}
cell.textLabel.textAlignment = UITextAlignmentLeft;
cell.textLabel.font = [UIFont fontWithName:#"Arial" size:13.0];
cell.textLabel.textColor = [UIColor blackColor];
cell.textLabel.highlightedTextColor = [UIColor blueColor];
cell.textLabel.textAlignment = UITextAlignmentCenter;
return cell;
}
// [prefs setInteger:10 forKey:#"faqQuesID"]; if i put manually integer then it does work but when i receive value form indexPath.row then it does show error
// console error is
2011-12-05 18:16:30.312 test[3602:c203] -[__NSCFDictionary integerValue]: unrecognized selector sent to instance 0x719e400
2011-12-05 18:16:30.314 test[3602:c203] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFDictionary integerValue]: unrecognized selector sent to instance 0x719e400'
// i have waste a more couple of hours please give me suggestion how i can fix this problem?

Answer 1

In your cellForRowAtIndexPath:
NSDictionary *dict1 = [rows objectAtIndex:indexPath.row];
rows is an array of dictionaries. OK.
In your didSelectRow:
faqQuesID = [[rows objectAtIndex: indexPath.row] integerValue];
Which we can break down into:
NSDictionary *dict = [rows objectAtIndex:indexPath.row];
faQuesID = [dict integerValue];
NSDictionary does not have an integerValue method - which is exactly what the error message is telling you. Presumably you want to get the integer from a particular object in the dictionary.
faqQuesID = [[[rows objectAtIndex: indexPath.row] objectForKey:#"faqQuesID"]integerValue];
Assuming you have an NSNumber stored under the key #"faqQuesID".
So, the your didSelectRow method should be something like:
NSDictionary *faq = [rows objectAtIndex: indexPath.row];
[prefs setInteger:[[faq objectForKey:#"faqQuesID"] integerValue] forKey:#"faqQuesID"];