objective-c - 具有字符串名称的对象

Question

如果我创建一个类的对象，我会:

Item *item01 = [[Item alloc] init];

但是我如何给它一个字符串中的名称呢？ (我提出这个问题是因为我必须在循环中执行此操作，并且对象的名称是动态的)

NSString *aString = [NSString stringWithFormat:@"%@", var];
Item *??? = [[Item alloc] init];

谢谢!

Answer 1

如果您想通过字符串名称引用对象，则可以将对象存储在 NSMutableDictionary 中并将 key 设置为名称。

例如:

// Someplace in your controller create and initialize the dictionary
NSMutableDictionary *myItems = [[NSMutableDictionary alloc] initWithCapacity:40];

// Now when you create your items
Item *temp = [[Item alloc] init];
[myItems setObject:temp forKey:@"item01"];
[temp release];

// This way when you want the object, you just get it from the dictionary
Item *current = [myItems objectForKey:@"item01"];