My solution to this maddening use of NSNull by JSON interpreters is to create a category on NSNull, where I define integerValue, floatValue, length, etc - return 0 for all. Everytime you get another crash add a new category. I think I had 6 or 7 when I had this issue.
The problem with NOT doing this is you have to look for the NULL everywhere in your converted objects - a PITA in my opinion.
EDIT: the code I'm using, all in a NSNull+JSON.m file:
@interface NSNull (JSON)
@end
@implementation NSNull (JSON)
- (NSUInteger)length { return 0; }
- (NSInteger)integerValue { return 0; };
- (float)floatValue { return 0; };
- (NSString *)description { return @"0(NSNull)"; }
- (NSArray *)componentsSeparatedByString:(NSString *)separator { return @[]; }
- (id)objectForKey:(id)key { return nil; }
- (BOOL)boolValue { return NO; }
@end
EDIT2: Now in Swift 3:
extension NSNull {
func length() -> Int { return 0 }
func integerValue() -> Int { return 0 }
func floatValue() -> Float { return 0 };
open override var description: String { return "0(NSNull)" }
func componentsSeparatedByString(separator: String) -> [AnyObject] { return [AnyObject]() }
func objectForKey(key: AnyObject) -> AnyObject? { return nil }
func boolValue() -> Bool { return false }
}
My solution to this maddening use of NSNull by JSON interpreters is to create a category on NSNull, where I define integerValue, floatValue, length, etc - return 0 for all. Everytime you get another crash add a new category. I think I had 6 or 7 when I had this issue.
The problem with NOT doing this is you have to look for the NULL everywhere in your converted objects - a PITA in my opinion.
EDIT: the code I'm using, all in a NSNull+JSON.m file:
@interface NSNull (JSON)
@end
@implementation NSNull (JSON)
- (NSUInteger)length { return 0; }
- (NSInteger)integerValue { return 0; };
- (float)floatValue { return 0; };
- (NSString *)description { return @"0(NSNull)"; }
- (NSArray *)componentsSeparatedByString:(NSString *)separator { return @[]; }
- (id)objectForKey:(id)key { return nil; }
- (BOOL)boolValue { return NO; }
@end
EDIT2: Now in Swift 3:
extension NSNull {
func length() -> Int { return 0 }
func integerValue() -> Int { return 0 }
func floatValue() -> Float { return 0 };
open override var description: String { return "0(NSNull)" }
func componentsSeparatedByString(separator: String) -> [AnyObject] { return [AnyObject]() }
func objectForKey(key: AnyObject) -> AnyObject? { return nil }
func boolValue() -> Bool { return false }
}
