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objective-cnsdictionarynsnumber

NSNumber returns wrong value

I have NSDictionary and I assign value of 'price' key to NSNumber property of my object but when I log number value, it is an strange negative number!

item.price = [food valueForKey:@"price"];

price property is NSNumber

[[food valueForKey:@"price"] class]

will print __NSCFNumber which is right.

[[food valueForKey:@"price"] intValue]

returns 0x000000000000c350 which is 50000 thats right

but when I log item.price or [item.price integerValue] it is -15536 which is completely wrong!

Any idea?

food json sample:

{ "title":"Pizza", "price":50000 }

enter image description here

Solution

  • Guess what?

    all of this logs and problems shows my NSNumber property can't store some integers. but what range of integers? integers which are between -32,768 / 32,768

    but why? because I have define my managed object price property of kind NSInteger 16!

    I should define it as NSInteger 32