如何实现全局静态类 [英] How to Implement a Global Static Class

问题描述

这是一个关于objective-c的新手问题：
我想在整个代码中创建一个可以被任何对象访问的静态类。这个类将充当几个对象的容器。
任何人都可以提供一个简短的代码示例，如何声明静态全局变量和方法？

This is kind of newbie question on objective-c: I would like to create a static class available throughout my entire code to be accessed by any object. This class will act as a container of several objects. Can anybody provide a short example of code as how to declare static global variables and methods ?

推荐答案

类我有这样的

.h文件看起来像这样

The .h file looks like this

@interface Globals : NSObject
{

}
+ (Globals *)instance;

@end

且.m文件如下

@implementation Globals

- (id)init
{
    self = [super init];

    if (self) 
    {

    }

    return self;
}

+ (Globals *)instance
{
    static Globals *instance = nil;

    @synchronized(self) 
    {
        if (instance == nil) 
        {
            instance = [[Globals alloc] init];
        }
    }

    return instance;
}

- (void)dealloc
{
    [super dealloc];
}

@end

Globals类的基本示例

of course this is a very basic example of a Globals class

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