内置预处理器令牌来检测iPhone平台

Question

Is there a single preprocessor token that can be used to detect any iPhone device or simulator at build time? I'm currently using:

#ifdef __IPHONE_OS_VERSION_MIN_REQUIRED
    // This is an iPhone build
#endif

Is this the recommended approach or is there a better way? I'd prefer the macro to be built-in, ie defined by the compiler and not by an SDK header file I have to include.

I'm not concerned about distinguishing between iPhone OS versions right now, but if there's an Apple documentation page that details all the relevant macros and when they are and aren't defined then I'd appreciate a link to it as my searching has come up short thus far.

Thanks!

Answer 1

From this site we find that you need TARGET_OS_IPHONE

#if TARGET_OS_IPHONE
//Do iPhone stuff
#else
//Do Mac stuff
#endif

Answer 2

您正在寻找的文件是TargetConditionals.h ，它定义了您感兴趣的所有宏。您可以在每个版本的SDK中找到它，如2.2 SDK的以下路径：

/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.2.sdk/usr/include/TargetConditionals.h

Answer 3

If you have code that runs on the iPhone and on the desktop, you can use TARGET_OS_IPHONE to determine if the target OS is any version of the iPhone OS. There's also TARGET_IPHONE_SIMULATOR , which is defined only when the app is being built for the simulator. They're still defined in header files, but I hope that helps!