ios编程（第四版）源代码

// // BNRItem.h // RandomItems // // Created by John Gallagher on 1/12/14. // Copyright (c) 2014 Big Nerd Ranch. All rights reserved. // #import <Foundation/Foundation.h> @interface BNRItem : NSObject { NSString *_itemName; NSString *_serialNumber; int _valueInDollars; NSDate *_dateCreated; } + (instancetype)randomItem; // Designated initializer for BNRItem - (instancetype)initWithItemName:(NSString *)name valueInDollars:(int)value serialNumber:(NSString *)sNumber; - (instancetype)initWithItemName:(NSString *)name; - (void)setItemName:(NSString *)str; - (NSString *)itemName; - (void)setSerialNumber:(NSString *)str; - (NSString *)serialNumber; - (void)setValueInDollars:(int)v; - (int)valueInDollars; - (NSDate *)dateCreated; @end