您的意思是 NSNumber code> + numberWithInt：和 + numberWithBool：方法，而不是 NSDate ？它是定义这些方法的NSNumber。

Do you mean NSNumber's +numberWithInt: and +numberWithBool: methods, not NSDate? It's NSNumber that defines those methods.

要将数字转换为日期，它实际上取决于数字是多少。如果是UNIX时间戳，则 [NSDate dateWithTimeIntervalSince1970：theTimestampInSeconds] 。

To convert a number to a date, it really depends on what the number is. If it's a UNIX timestamp, then [NSDate dateWithTimeIntervalSince1970:theTimestampInSeconds].

至于添加 NSArray 对象到字典：

[yourDictionary setObject:yourArray forKey:@"SomeKey"];

如果您需要更多帮助，您需要发布一些代码，因为您的问题不是很清楚。

You'll have to post some code if you need more help as your question isn't very clear.