在目标c中查找Mac OS X版本号

Question

如何从Cocoa Objective-C应用程序中找到Mac OS X的版本号（例如“10.6.7”）？

Answer 1

#import <CoreServices/CoreServices.h>

SInt32 major, minor, bugfix;
Gestalt(gestaltSystemVersionMajor, &major);
Gestalt(gestaltSystemVersionMinor, &minor);
Gestalt(gestaltSystemVersionBugFix, &bugfix);

NSString *systemVersion = [NSString stringWithFormat:@"%d.%d.%d",
    major, minor, bugfix];

Answer 2

您可以使用Apple代码使用的相同技术......

NSDictionary *systemVersionDictionary =
    [NSDictionary dictionaryWithContentsOfFile:
        @"/System/Library/CoreServices/SystemVersion.plist"];

NSString *systemVersion =
    [systemVersionDictionary objectForKey:@"ProductVersion"];

Apple正是这样填写函数_CFCopySystemVersionDictionary中各种系统实用程序的版本号：

http://opensource.apple.com/source/CF/CF-744/CFUtilities.c

Answer 3

对于OS X 10.10+，我认为使用NSProcessInfo是一种更简单，更安全的方法：

NSOperatingSystemVersion version = [[NSProcessInfo processInfo] operatingSystemVersion];
NSLog([NSString stringWithFormat:@"%ld.%ld.%ld", version.majorVersion, version.minorVersion, version.patchVersion]);