如何使用一个NSArray作为一个全局常量？ [英] How can I use an NSArray as a global constant?

问题描述

我用一组 Constant.m 文件，每个目标之一，确定具体的事情对每个目标。例如：

I'm using a set of Constant.m files, one per target, to define specific things for each target. For example:

// Constants.h
extern NSString * const kDatabaseFileName;
//Constants.m
NSString * const kDatabaseFileName = @"target_one.sqlite";

我也想定义一个NSArray，我的每个目标：

I'd also like to define an NSArray for each of my targets:

NSArray * const kLabelNames = [[NSArray alloc] initWithObjects:
    @"nameLabel", @"addressLabel", nil];

但是，这给了错误：初始元素不是常量。使用arrayWithObjects`也不起作用。这是因为在我的数组字符串不常量？

But this gives "error: initializer element is not constant". Using 'arrayWithObjects` doesn't work either. Is this because the strings in my array are not constants?

如何建立一个数组作为全局常量？谢谢你。

How can I set up an array as a global constant? Thanks.

推荐答案

如果你想要一组常数，包括NS类型，考虑将它们放在一个单例。

If you want a set of constants that includes NS types, consider placing them all in a singleton.

您可以有一个头文件和多个实现文件（一个目标一个）。只要所有执行在头文件中声明的类，你应该罚款。

You could have a single header file, and multiple implementation files (one per target). As long as that all implement the class declared in the header file you should be fine.

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