Only iOS 7 crash [NSNull intValue]: unrecognized selector sent to instance

Question

I want to get data from JSON service. Only iOS 7 version crash when get data from JSON value. It returns from JSON service below that:

{
    voteAverageRating =         


        

Answer 1

Put a check before accessing the value from JSON like,

if([NSNull null] != [listDic objectForKey:@"voteCount"]) {
    NSString *voteCount = [listDic objectForKey:@"voteCount"];
    /// .... 
}

Reason for checking is, collection objects like NSDictionary do not allow values to be nil, hence they are stored as null. Passing intValue to a NSNull will not work as it will not recognise this selector.

Hope that helps!