XCode, table view cellForRowAtIndexPath - xcode

Question

I know there is a simple solution to this but I can't seem to be able to tell :/
cell.textLabel.text = [BooksBorrowed objectAtIndex:0];
I have that in my cellForRowAtIndexPath method, bookName is a string.
It crashes and leaves no error in log. I dont know what I am doing wrong.
bookName is a string that i get from JSON Parsing and has content.
(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
NSLog(#"Book Name is %#", BooksBorrowed[0]);
cell.textLabel.text = [BooksBorrowed objectAtIndex:0];
return cell;
}
This is how I get the BooksBorrowed array:
- (void)updateMyBooks
{
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
// Fetch data on a background thread:
NSString *authFormatString =
#"http://localhost:8888/Jineel_lib/bookBorrowed.php?uid=%d";
NSString *urlString = [NSString stringWithFormat:authFormatString, 1];
NSURL *url = [NSURL URLWithString:urlString];
NSString *contents = [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];
response1 = [contents JSONValue];
if (contents) {
NSMutableArray *newBooksBorrowed = [NSMutableArray array];
// ... Parse JSON response and add objects to newBooksBorrowed ...
BookName = [[NSString alloc]init];
DateBorrowed = [[NSString alloc]init];
BookID = [[NSString alloc]init];
BookExtended = [[NSString alloc]init];
BookReturned = [[NSString alloc]init];
BookName = [response1 valueForKey:#"BookName"];
BookID = [response1 valueForKey:#"BookID"];
DateBorrowed = [response1 valueForKey:#"DateBorrowed"];
BookExtended = [response1 valueForKey:#"Extended"];
BookReturned = [response1 valueForKey:#"Returned"];
NSLog(#"Book Name is %#", BookName);
[newBooksBorrowed addObject:BookName];
dispatch_sync(dispatch_get_main_queue(), ^{
// Update data source array and reload table view.
BooksBorrowed = newBooksBorrowed;
[self.tableView reloadData];
});
}
});
}

Answer 1

Are you sure bookName is a valid NSString? I would break at that line of code and type
po bookName
in the debugger to see if what you are assigning to bookName is in fact a valid NSString.
Oh, and make sure you returning a valid UITableViewCell at the end of that method, or else it is guaranteed your code will break.

Answer 2

Replace this code BooksBorrowed = newBooksBorrowed; with this in your function
BooksBorrowed = [[NSString alloc] initWithArray:newBooksBorrowed];
Hope it helps. Happy coding..
Thanks.

Answer 3

The solution to my questions was :
I had to change the part where I add my data into the table to :
NSString *string = [[NSString alloc] initWithFormat:#"%#",[BooksBorrowed objectAtIndex:indexPath.row]];
This is because a table view tends to not take things of element 0. Also I took out newBooksBorrowed and it works with just the BooksBorrowed array. :) Thank you everyone for helping me resolve it.