NSNull crashes my initWithDictionary

Question

I am parsing a JSON file.

After getting the NSDictionary, I parse the objects in the dictionary into an array of objects. However, for certain JSON files, I get NULL, wh

Answer 1

The basic problem seems to be that there is no intValue method on the NSNull that you're getting back from the call to valueForKey:.

You could add the intValue method, but what would you have it return for an NSNull? 0? -1?

The code to do that would look something like this.

In MyNullExtensions.h:

@interface NSNull (integer)
-(int) intValue;
@end

And in MyNullExtensions.m:

#import "MyNullExtensions.h"

@implementation NSNull (functional)
-(int) intValue
{
    return -1;
}
@end

Later, Blake.