当我在appdelegate中定义一个属性时，如何使用它？(when I defined a property in appdelegate, how to use it? [closed])

当我在appdelegate中定义一个属性时，如何使用它？(when I defined a property in appdelegate, how to use it? [closed])

我在appdelegate中定义了一个全局属性，在其他视图控制器中，我需要多次使用它。

在具体的viewcontorller中，我有两种方法

1）定义一些局部变量，并使用。 2）定义一个类变量，并使用。

推荐哪种方式？

I have a global property defined in appdelegate, in the other view controllers, I need to use it many times.

In specific viewcontorller, I have two ways

1) define some local variables, and use. 2) define a class variable, and use.

which way is recommended?

最满意答案

您可以定义一个常量来获取主应用程序委托，然后使用委托来访问您需要的任何内容 -

[[UIApplication sharedApplication] delegate] -> this will fetch you app delegate.

现在在您的应用程序中的全局某处定义一个常量 -

#define APP_DELEGATE [[UIApplication sharedApplication] delegate]

现在使用此常量来获取应用程序中的属性 -

APP_DELEGATE.prop -> this will fetch properties of delegate.

You can define a constant for getting your main app delegate, then use the delegate to access whatever you require -

[[UIApplication sharedApplication] delegate] -> this will fetch you app delegate.

Now define a constant somewhere global in your app -

#define APP_DELEGATE [[UIApplication sharedApplication] delegate]

Now use this constant to get the properties across the app -

APP_DELEGATE.prop -> this will fetch properties of delegate.