Objective-C SCNetworkReachabilityContext ARC转换 [英] Objective-C SCNetworkReachabilityContext ARC conversion

问题描述

在将应用转换为使用自动引用计数时，我遇到了此错误：

While converting an app to use Automatic Reference Counting I came across this error:

SCNetworkReachabilityContext context = {0, self, NULL, NULL, NULL};

ARC不允许将Objective-C指针隐式转换为'void *' / i>

Implicit conversion of an Objective-C pointer to 'void *' is disallowed with ARC

这修复了编译器错误，但发出警告：

This fixes the compiler error, but gives a warning:

SCNetworkReachabilityContext context = {0, objc_unretainedPointer(self), NULL, NULL, NULL};

如何摆脱这个警告？

使用'objc_objectptr_t'（又名'const void *'）表达式初始化'void *'会丢弃限定符

推荐答案

你应该可以将self（id）强制转换为void *而没有问题。

You should be able to cast self (id) to a void * without problem.

SCNetworkReachabilityContext context = {0, ( void * )self, NULL, NULL, NULL};

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