以编程方式更改时间和日期设置中的系统时间、时区和自动复选框

Question

我试图弄清楚如何以编程方式编辑时间和“自动设置日期和时间”复选框。我花了一段时间，找不到解决方案。

我尝试查看 NSUserDefault 键，但没有看到它们。

NSLog(@"%@", [[[NSUserDefaults standardUserDefaults] dictionaryRepresentation] allKeys]);

帮助表示赞赏。这是 OSX（不是 iphone）。

Answer 1

这不是一个完整的答案。我只是在下面的代码只会改变系统时间。注意：更改系统时间需要root权限。按原样通过 Xcode IDE 运行代码将失败。使用sudo 命令从终端运行有效。

//
//  main.m
//  TimeChange
//
//  Created by ... on 4/13/15.
//  Copyright (c) 2015 .... All rights reserved.
//

#import <Foundation/Foundation.h>
#import <sys/time.h>
#include <errno.h>

extern int errno;

void NSLogTime(const struct tm *restrict temp, suseconds_t microseconds)
{
    char tmbuf[64], buf[64];
    strftime(tmbuf, sizeof tmbuf, "%Y-%m-%d %H:%M:%S", temp);
    snprintf(buf, sizeof buf, "%s.%06d\n", tmbuf, microseconds);
    NSLog(@"   %@", [[NSString alloc] initWithUTF8String:buf]);
}

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        // Built from samples based on the URL listed below
        // http://stackoverflow.com/questions/2408976/struct-timeval-to-printable-format
        // http://www.linuxquestions.org/questions/programming-9/c-code-to-change-date-time-on-linux-707384/

        // Do whatever you need to set the following variable
        // In this example I am hard-coding it
        int month = 2;
        int day = 27;
        int year = 2002;

        NSLog(@"Getting current date/time...");
        struct timeval currentTime;
        int success = gettimeofday(&currentTime, 0); // should check for success
        struct tm *localTime = localtime(&currentTime.tv_sec);

        NSLogTime(localTime, currentTime.tv_usec);

        if (localTime)
        {
            NSLog(@"...create new date/time structure...");
            localTime->tm_mon  = month - 1;
            localTime->tm_mday = day;
            localTime->tm_year = year - 1900;

            const struct timeval tv = {mktime(localTime), 0};
            success = settimeofday(&tv, 0);

            // check if we are success
            if (success == 0)
            {
                NSLog(@"...time was changed!");

                // get the new time from the system and display it
                struct timeval updatedTime;
                gettimeofday(&updatedTime, 0); // should check for success
                NSLogTime(localtime(&updatedTime.tv_sec), updatedTime.tv_usec);
            }
            else
            {
                // display the error message
                NSLog(@"Error Setting Date: %s", strerror(errno));
            }
        }

    }
    return 0;
}

下面是在终端中运行的代码的屏幕截图。

注意：输出中的一小时时差是因为夏令时 (DST) 在 2002 年 2 月 22 日没有生效。

Answer 2

所以我发现我可以编写一个可以执行 bash 脚本命令的 applescript。然后我用 NSApplescript 调用了这个脚本。 很酷的是苹果脚本有一个优雅的密码对话框，它只需要处理一次即可。这比让终端出现要好得多。

缺点是使用 NSApplescript 调用 applescript 的过程。 将 3 个 args 传递给脚本的简单过程需要由大约 50 行过时的 NSAppleEvent 代码来处理，这些代码甚至在 Apple 文档中都不起作用。幸运的是，我找到了一篇帖子，其中有人知道缺席的 Carbon 框架中缺少的常量。

代码：

// Caller responsible for well formed ip address.
+(BOOL)setDateAndTimePreferences:(NSString*)ipAddress setAutoNetworkTime:(BOOL)yNo withTimezone:(NSString*)timezone{

    // Load the script from a resource by fetching its URL from within our bundle
    // Note: if the script if stored in a nother file location, NSBundle may not be
    // necessary. Make sure the path to the script is correct.
    NSString* path = [[NSBundle mainBundle] pathForResource:@"date_time_pref" ofType:@"scpt"];
    if (path != nil){

        NSURL* url = [NSURL fileURLWithPath:path];
        if (url != nil)
        {
            NSDictionary* errors = [NSDictionary dictionary];
            NSAppleScript* appleScript =
            [[NSAppleScript alloc] initWithContentsOfURL:url error:&errors];
            if (appleScript != nil)
            {

                // Get the value of the setAutoNetwork checkbox.
                NSString *chkBox = (yNo == YES)? @"on": @"off";

                // Create the arg parameters
                NSAppleEventDescriptor* firstParameter =
                [NSAppleEventDescriptor descriptorWithString:ipAddress];

                NSAppleEventDescriptor* secondParameter =
                [NSAppleEventDescriptor descriptorWithString:chkBox];

                NSAppleEventDescriptor* thirdParameter =
                [NSAppleEventDescriptor descriptorWithString:timezone];

                // Create and populate the list of parameters.
                NSAppleEventDescriptor* parameters = [NSAppleEventDescriptor listDescriptor];
                [parameters insertDescriptor:firstParameter atIndex:1];
                [parameters insertDescriptor:secondParameter atIndex:2];
                [parameters insertDescriptor:thirdParameter atIndex:3];

                // Create the AppleEvent target
                ProcessSerialNumber psn = {0, kCurrentProcess};
                NSAppleEventDescriptor* target = [NSAppleEventDescriptor
                                              descriptorWithDescriptorType:typeProcessSerialNumber
                                              bytes:&psn length:sizeof(ProcessSerialNumber)];

                //  We need these constants from the Carbon OpenScripting
                // framework, but we don't actually need Carbon.framework.
                #define kASAppleScriptSuite 'ascr'
                #define kASSubroutineEvent  'psbr'
                #define keyASSubroutineName 'snam'

                // Create an NSAppleEventDescriptor with the script's method name to call,
                // this is used for the script statement: "on   set_preferences(arg1,arg2arg3)"
            // Note that the routine name must be in lower case.
            NSAppleEventDescriptor* handler =
            [NSAppleEventDescriptor descriptorWithString:
             [@"set_preferences" lowercaseString]];

            // Create the event for an AppleScript subroutine,
            // set the method name and the list of parameters
            NSAppleEventDescriptor* event =
            [NSAppleEventDescriptor  appleEventWithEventClass:kASAppleScriptSuite
                                                     eventID:kASSubroutineEvent
                                            targetDescriptor:target
                                                    returnID:kAutoGenerateReturnID
                                               transactionID:kAnyTransactionID];
            [event setParamDescriptor:handler forKeyword:keyASSubroutineName];
            [event setParamDescriptor:parameters forKeyword:keyDirectObject];

                // call the event in AppleScript
                if (![appleScript executeAppleEvent:event error:&errors])
                {
                    // report any errors from 'errors'
                    NSLog(@"Errors %@",[errors description]);
                }

                [appleScript release];
            }

            else{
                // report any errors from 'errors'
                NSLog(@"Error: applescript is nil");
            }

        }else{

            NSLog(@"Could not locate the time_date_preferences script");
            return NO;
        }

    }else{

        NSLog(@"Could not locate the time_date_preferences script");
        return NO;
    }



    return YES;

}

脚本：

on set_preferences(ipaddress, chkbox, timezone)

    global timezonelist

    do shell script "/usr/sbin/systemsetup -setusingnetworktime " & chkbox password "passwordhere" with administrator privileges
    do shell script "/usr/sbin/systemsetup -setnetworktimeserver " & ipaddress with administrator privileges
    set timezonelist to (do shell script "/usr/sbin/systemsetup -listtimezones" with administrator privileges)

    if timezonelist contains timezone then
        do shell script "/usr/sbin/systemsetup -settimezone " & timezone with    administrator privileges

    else

        display notification "Please open Date and Time Preferences and set your time zone manually." with title ("Invalid Time Zone")
       delay 1
    end if

end set_preferences