Objective-C的字典插入BOOL [英] Objective-C dictionary inserting a BOOL

问题描述

OK，我有点困惑。
这可能只是一个平凡。

OK, I'm a little confused. It's probably just a triviality.

我有一个功能，它看起来是这样的：

I've got a function which looks something like this:

- (void)getNumbersForNews:(BOOL)news andMails:(BOOL)mails {
NSMutableDictionary *parameters = [[NSMutableDictionary alloc] init];
[parameters setValue:news  forKey:@"getNews"];
[parameters setValue:mails forKey:@"getMails"];...}

不要紧，我是使用的setValue：forKey：或的setObject：ForKey：，我总是得到一个警告：

It doesn't matter whether I use setValue:forKey: or setObject:ForKey:, I'm always getting a warning:

设置传递的参数1 ...使指针从整数，未作类型转换...

"Passing argument 1 of set... makes pointer from integer without a cast"...

如何在地球上我插入一个布尔到字典？

How on earth do I insert a bool into a dictionary?

推荐答案

值。为了解决这个问题，敷在布尔的NSNumber 对象：

Values in an NSDictionary must be objects. To solve this problem, wrap the booleans in NSNumber objects:

[parameters setValue:[NSNumber numberWithBool:news] forKey:@"news"];
[parameters setValue:[NSNumber numberWithBool:mails] forKey:@"mails"];

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