[[UIApplication sharedApplication] delegate] 的简写?

问题描述

我将全局变量存储在我的 AppDelegate 中并通过以下方式访问它们:

I stored global variables in my AppDelegate and access them by:

AppDelegate *d = [[UIApplication sharedApplication] delegate];
d.someString = ...

什么是保存一些输入的推荐方法，所以我不需要一次又一次地 AppDelegate *d = [[UIApplication sharedApplication] delegate];?谢谢！

What's the recommend way to save some typing and so I don't need to AppDelegate *d = [[UIApplication sharedApplication] delegate]; again and again? Thanks!

推荐答案

正如Shaggy Frog所说，在YourAppDelegate.h文件中定义一个宏，示例如下:

As Shaggy Frog said, define a macro in your YourAppDelegate.h file, an example like this:

#define AppDelegate (YourAppDelegate *)[[UIApplication sharedApplication] delegate]

然后您可以像这样在代码中获取应用委托:

Then you can get the app delegate in your code like this:

[AppDelegate ......];

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