是否可以在键下设置NSMutableDictionary键？

Question

我设置了value key，如此：

[mutableDict setObject:@"Object to set" forKey:@"KeyOne"];

这有效，但现在我想在value下添加"Key one"，如下所示：

[mutableDict setObject:@"Object a" forKey:@"KeyOne/detailsOnKey"];

这甚至可能吗？感谢所有帮助

Answer 1

听起来你想要字典中的字典dawg

mutableDict[@"KeyOne"] = @{@"detailsOnKey": @"Object"}

然后你可以像这样访问那个嵌套的dict：

mutableDict[@"KeyOne"][@"detailsOnKey"]

Answer 2

您可以使用多个词典。

//add a dictionary as the object for KeyOne
[mutableDict setObject:[[NSMutableDictionary alloc] init] forKey:@"KeyOne"];

//add "Object a" under key one
[(NSMutableDictionary *)[mutableDict objectForKey:@"KeyOne"] setObject:@"Object a" forKey:@"detailsOnKey"];

//如何获取keyone / detailsonkey？这样你可以把它取回来

id objectA = [(NSMutableDictionary *)[mutableDict objectForKey:@"KeyOne"] objectForKey:@"detailsOnKey"];