Question

我想以编程方式在Mac OS X上的系统偏好设置中获取节能设置，特别是我正在编写的小应用程序的“显示睡眠”或“计算机睡眠”设置。

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我知道您可以检索睡眠设置，例如，使用this SO answer

中的命令行

 pmset -g | grep "^[ ]*sleep" | awk '{ print $2 }'

打印60（我的正确睡眠时间），但我更愿意使用本机API来获取这些设置。不幸的是，到目前为止我的谷歌搜索没有发现任何有用的东西。 NSUserDefaults是我得到的最接近的，但我看不出如何用它来获取我想要的设置。

任何人都可以提供帮助吗？

Answer 1

是的，自问这个问题以来已经超过4年......目前尚不清楚代码所需的语言。使用Objective-C。

节电器偏好可在以下位置找到：

/Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist

在Mac应用程序中，我们现在可以使用：

NSString *powerMgt = @"/Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist";
NSDictionary *power = [NSDictionary dictionaryWithContentsOfFile:powerMgt];
// for example the sleep time on AC power
NSNumber *sleepyTime = [[[power objectForKey:@"Custom Profile"] objectForKey:@"AC Power"] objectForKey:@"System Sleep Timer"];

字典看起来像：

{
    ActivePowerProfiles =     {
        "AC Power" = "-1";
        "Battery Power" = "-1";
    };
    "Custom Profile" =     {
        "AC Power" =         {
            "Disk Sleep Timer" = 10;
            "Display Sleep Timer" = 10;
            "Display Sleep Uses Dim" = 1;
            GPUSwitch = 2;
            "Hibernate File" = "/var/vm/sleepimage";
            "Hibernate Mode" = 3;
            "Mobile Motion Module" = 1;
            PrioritizeNetworkReachabilityOverSleep = 0;
            "Standby Delay" = 4200;
            "Standby Enabled" = 0;
            "System Sleep Timer" = 0;
            TTYSPreventSleep = 1;
            "Wake On AC Change" = 0;
            "Wake On Clamshell Open" = 1;
            "Wake On LAN" = 1;
        };
        "Battery Power" =         {
            "Disk Sleep Timer" = 10;
            "Display Sleep Timer" = 10;
            "Display Sleep Uses Dim" = 1;
            GPUSwitch = 2;
            "Hibernate File" = "/var/vm/sleepimage";
            "Hibernate Mode" = 3;
            "Mobile Motion Module" = 1;
            ReduceBrightness = 1;
            "Standby Delay" = 4200;
            "Standby Enabled" = 0;
            "System Sleep Timer" = 15;
            TTYSPreventSleep = 1;
            "Wake On AC Change" = 0;
            "Wake On Clamshell Open" = 1;
        };
    };
}

Answer 2

在查看pmset的来源之后，这就是我想出的：

#include <SystemConfiguration/SystemConfiguration.h>
#include <CoreFoundation/CoreFoundation.h>

#define kIOPMDynamicStoreSettingsKey "State:/IOKit/PowerManagement/CurrentSettings"
#define kIOPMSystemSleepKey "System Sleep Timer"

SCDynamicStoreRef dynamicStore = SCDynamicStoreCreate(NULL, CFSTR("get-sleep-time"), NULL, NULL);
CFDictionaryRef dictionaryRef = SCDynamicStoreCopyValue(dynamicStore, CFSTR(kIOPMDynamicStoreSettingsKey));
CFTypeRef typeRef = CFDictionaryGetValue(dictionaryRef, CFSTR(kIOPMSystemSleepKey));

int minutes;
CFNumberGetValue(typeRef, kCFNumberIntType, (void *)&minutes);

CFRelease(dynamicStore);
CFRelease(dictionaryRef);
CFRelease(typeRef);

minutes将包含以分钟为单位的计算机睡眠值。

以编程方式在Mac OS X上获得睡眠时间（以及其他节能设置）

2 个答案: