Facebook JSON feed - __NSArrayM insertObject:atIndex:]: object cannot be nil - objective-c

Question

I'm trying to parse a Facebook Page Json Feed to a table view and followed this Tutorial
and I'm getting this error: "Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[__NSArrayM insertObject:atIndex:]: object cannot be nil'"
Here is my code from my tableview.h:
#import "FBViewController.h"
#interface FBViewController ()
{
NSMutableData *fbdata;
NSMutableArray *array;
}
#end
#implementation FBViewController
- (void)viewDidLoad
{
[super viewDidLoad];
[[self fbtableview]setDelegate:self];
[[self fbtableview]setDataSource:self];
array = [[NSMutableArray alloc]init];
NSURL *url = [NSURL URLWithString:#"https://graph.facebook.com/XXXXXXX/posts?access_token=ACCESS_TOKEN"];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
connection = [NSURLConnection connectionWithRequest:request delegate:self];
if (connection) {
fbdata=[[NSMutableData alloc]init];
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
[fbdata setLength:0];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[fbdata appendData:data];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
NSLog(#"fail with error");
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSDictionary *allDataDictionary = [NSJSONSerialization JSONObjectWithData:fbdata options:0 error:nil];
NSArray *arraydata = [allDataDictionary objectForKey:#"data"];//objectforkey corresponde ao nome do dicionario
for (NSDictionary *diction in arraydata)
{
NSString *message =[diction objectForKey:#"message"];
[array addObject:message];
[[self fbtableview]reloadData];
}
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [array count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (!cell)
{
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.text = [array objectAtIndex:indexPath.row];
return cell;
}
#end
Can anyone help me out?

Answer 1

problem is here i think so,
for (NSDictionary *diction in arraydata)
{
NSString *message =[diction objectForKey:#"message"];
[array addObject:message]; //here some value is nil means you are trying to add a nil object to array that's why app getting crashed.
[[self fbtableview]reloadData];
}
}