This class declares an abstract interface for objects that an instance of NSCell can use to create, interpret, and validate a textual representation of the cell's contents that is suited for human readability. The Foundation framework provides two concrete classes that are used to format numeric and time and date values: NSNumberFormatter and NSDateFormatter.

@interface NSFormatter : NSObject <NSCoding, NSCopying>
// Instance Methods
- (NSAttributedString *)attributedStringForObjectValue:(id)obj withDefaultAttributes:(NSDictionary *)attrs;
- (NSString *)editingStringForObjectValue:(id)obj;
- (BOOL)getObjectValue:(id *)obj forString:(NSString *)string errorDescription:(NSString **)error;
- (BOOL)isPartialStringValid:(NSString *)partialString newEditingString:(NSString **)newString errorDescription:(NSString **)error;
- (BOOL)isPartialStringValid:(NSString **)partialStringPtr proposedSelectedRange:(NSRangePointer)proposedSelRangePtr originalString:(NSString *)origString originalSelectedRange:(NSRange)origSelRange errorDescription:(NSString **)error;
- (NSString *)stringForObjectValue:(id)obj;
// Methods Implementing NSCoding
- (void)encodeWithCoder:(NSCoder *)aCoder;
- (id)initWithCoder:(NSCoder *)aDecoder;
// Methods Implementing NSCopying
- (id)copyWithZone:(NSZone *)zone;

Subclasses

NSDateFormatter, NSNumberFormatter