WatchKit：'sharedApplication'不可用：iOS上不可用（App Extension） - 在适当的地方使用基于视图控制器的解决方案 [英] WatchKit : 'sharedApplication' is unavailable: not available on iOS (App Extension) - Use view controller based solutions where appropriate instead

问题描述

我在监视工具包扩展的构建阶段添加了Manager.m（iOS类）。但是，我收到以下错误

I've added Manager.m (iOS class) in my build phase in the watch kit extension. However, I got the following error

'sharedApplication'不可用：iOS上不可用（App
Extension） - 使用视图适当的基于控制器的解决方案
而不是

'sharedApplication' is unavailable: not available on iOS (App Extension) - Use view controller based solutions where appropriate instead

这是我的Manager.m中导致问题的行。

Here is the line in my Manager.m that is causing the problem.

 AppDelegate *appDelegate =
  (AppDelegate *)[[UIApplication sharedApplication] delegate];

我想在Manager.m中使用代码，但这些代码行导致问题并赢了让我运行手表App。有没有解决的办法？我不想重写整个类只是为了容纳watchkit。

I want to use code in Manager.m, but lines of code like these are causing issues and won't let me run the watch App. Is there a way around this? I don't want to rewrite the whole class just to accommodate watchkit.

推荐答案

定义/添加一个宏（例如WATCH_KIT_EXTENSION_TARGET）您的手表套件扩展程序的目标构建设置，并使用它来有选择地构建代码。例如。由于sharedApplication在iOS扩展程序上不可用，因此您可以像下面这样编码

Define/Add a macro (e.g. WATCH_KIT_EXTENSION_TARGET) in your watch kit extension's target build settings and use it to selectively build code. E.g. as sharedApplication is not available on iOS extension, so you can code like below

#ifndef WATCH_KIT_EXTENSION_TARGET
AppDelegate *appDelegate =
  (AppDelegate *)[[UIApplication sharedApplication] delegate];
#endif

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