[[UIApplication sharedApplication] delegate]的短手] [英] Short hand for [[UIApplication sharedApplication] delegate]?

问题描述

我在AppDelegate中存储全局变量，并通过以下方式访问它们：

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

什么是推荐的方法来保存一些打字等我不需要一次又一次的 AppDelegate * d = [[UIApplication sharedApplication] delegate]; 谢谢！

解决方案

As Shaggy Frog 说，在YourAppDelegate.h文件中定义一个宏，例如：

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

然后，您可以在代码中获取应用程序委托：

  [AppDelegate ......]; 
  

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

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

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!

解决方案

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

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

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

[AppDelegate ......];

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