EXC_BAD_ACCESS on NSMutableDictionary - iphone

Question

I am beginning with iOS development, I have this code :
First of all I declare the listOfItems NSMutableArray:
#interface SAMasterViewController () {
NSMutableArray *listOfItems;
}
#end
And now, here is the part the code that gives me an "EXC_BAD_ACCESS (code=1, address=0x5fc260000)" error.
The error is given in the last line of the "individual_data" object.
listOfItems = [[NSMutableArray alloc] init];
for(NSDictionary *tweetDict in statuses) {
NSString *text = [tweetDict objectForKey:#"text"];
NSString *screenName = [[tweetDict objectForKey:#"user"] objectForKey:#"screen_name"];
NSString *img_url = [[tweetDict objectForKey:#"user"] objectForKey:#"profile_image_url"];
NSInteger unique_id = [[tweetDict objectForKey:#"id"] intValue];
NSInteger user_id = [[[tweetDict objectForKey:#"user"] objectForKey:#"id"] intValue ];
NSMutableDictionary *individual_data = [NSMutableDictionary dictionaryWithObjectsAndKeys:
text, #"text_tweet",
screenName,#"user_name",
img_url, #"img_url",
unique_id, #"unique_id",
user_id, #"user_id", nil];
[listOfItems addObject:individual_data];
}
Thanks in advance.

Answer 1

You can not put NSIntegers or any other non Objective-C class inside of an array or dictionary. You need to wrap them in an NSNumber.
NSMutableDictionary *individual_data = [NSMutableDictionary dictionaryWithObjectsAndKeys:
text, #"text_tweet",
screenName,#"user_name",
img_url, #"img_url",
[NSNumber numberWithInteger:unique_id], #"unique_id",
[NSNumber numberWithInteger:user_id], #"user_id", nil];
//Or if you want to use literals
NSMutableDictionary *individual_data = [NSMutableDictionary dictionaryWithObjectsAndKeys:
text, #"text_tweet",
screenName,#"user_name",
img_url, #"img_url",
#(unique_id), #"unique_id",
#(user_id), #"user_id", nil];