blocks|key|2591772|text|您可以将日期描述作为字符串，然后将所需的子字符串作为|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2591773|NSString+*myDate+=+[[NSDate+date]+descriptionWithLocale:[NSLocale+systemLocale]];
myDate=[myDate+substringWithRange:NSMakeRange(26,+9)];
NSLog(@"%25@",myDate);|code-block|syntax|javascript|2591774|你会在日志中得到GMT%2B05:30。|2591775|*编辑*|2591776|如果不确定什么是索引，可以设置日期格式，然后访问索引。|2591777|NSString+*dateStr+=+@"Wed,+14+Oct+2015+12:53:58+%2B0000";

+//+Convert+string+to+date+object
NSDateFormatter+*dateFormat+=+[[NSDateFormatter+alloc]+init];
[dateFormat+setDateFormat:@"EE,+d+LLLL+yyyy+HH:mm:ss+Z"];
NSDate+*date+=+[dateFormat+dateFromString:dateStr];
NSString+*myDate+=+[date+descriptionWithLocale:[NSLocale+systemLocale]];
myDate=[myDate+substringWithRange:NSMakeRange(26,+9)];+
NSLog(@"%25@",myDate);|2591778|快乐编码..。:)|2591779|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

You can get date description as string and then get required substring as

<pre><code>NSString *myDate = [[NSDate date] descriptionWithLocale:[NSLocale systemLocale]];
myDate=[myDate substringWithRange:NSMakeRange(26, 9)];
NSLog(@"%@",myDate);
</code></pre>

u would get GMT+05:30 in log.

****EDITED****

if u are not sure what is index 
you can set date format and then access the index

<pre><code>NSString *dateStr = @"Wed, 14 Oct 2015 12:53:58 +0000";

 // Convert string to date object
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:@"EE, d LLLL yyyy HH:mm:ss Z"];
NSDate *date = [dateFormat dateFromString:dateStr];
NSString *myDate = [date descriptionWithLocale:[NSLocale systemLocale]];
myDate=[myDate substringWithRange:NSMakeRange(26, 9)]; 
NSLog(@"%@",myDate);
</code></pre>

Happy Coding.. :)

blocks|key|2591787|text|您可以使用NSTimeZone方法secondsFromGMT获取偏移量作为NSInteger值，然后使用NSString方法stringWithFormat和基本算法将整数值划分为小时和分钟来格式化您想要的格式。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2591788|样本代码：|2591789|-+(NSString+*)+getTimeZoneOffset:(NSTimeZone+*)timezone
{
+++NSInteger+minutesFromGMT+=+timezone.secondsFromGMT+/+60;+

+++//+handle+negative+offsets
+++char+sign;
+++if+(minutesFromGMT+<+0)
+++{
++++++sign+=+'-';
++++++minutesFromGMT+=+-minutesFromGMT;+//+make+positive
+++}
+++else
++++++sign+=+'%2B';

+++//+split+in+hours+and+minutes
+++NSInteger+hoursFromGMT+=+minutesFromGMT+/+60;
+++minutesFromGMT+%25=+60;

+++//+format+as+string+-+making+sure+minutes+is+two+digits+with+leading+zero+if+needed
+++//+cast+to+int+is+OK+as+no+value+will+be+greater+than+59!
+++return+[NSString+stringWithFormat:@"GMT%25c%25d:%2502d",+sign,+(int)hoursFromGMT,+(int)minutesFromGMT];
}|code-block|syntax|javascript|2591790|HTH|2591791|entityMap^0|5|A|H|E|12|9|1H|8|1R|G|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|12|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|13|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|P|$]]

You can use the <code>NSTimeZone</code> method <code>secondsFromGMT</code> to obtain the offset as an <code>NSInteger</code> value and then format how you wish using the <code>NSString</code> method <code>stringWithFormat</code> and basic arithmetic to divide the integer value into hours and minutes.

Sample code:

<pre><code>- (NSString *) getTimeZoneOffset:(NSTimeZone *)timezone
{
 NSInteger minutesFromGMT = timezone.secondsFromGMT / 60; 

 // handle negative offsets
 char sign;
 if (minutesFromGMT &lt; 0)
 {
 sign = '-';
 minutesFromGMT = -minutesFromGMT; // make positive
 }
 else
 sign = '+';

 // split in hours and minutes
 NSInteger hoursFromGMT = minutesFromGMT / 60;
 minutesFromGMT %= 60;

 // format as string - making sure minutes is two digits with leading zero if needed
 // cast to int is OK as no value will be greater than 59!
 return [NSString stringWithFormat:@"GMT%c%d:%02d", sign, (int)hoursFromGMT, (int)minutesFromGMT];
}
</code></pre>

HTH

blocks|key|1243485|text|就像这样。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1243486|NSDate+*currentDate+=+[NSDate+date];
NSDateFormatter+*dateFormatter+=+[[NSDateFormatter+alloc]+init];
//+display+in+12HR/24HR+(i.e.+11:25PM+or+23:25)+format+according+to+User+Settings
[dateFormatter+setTimeStyle:NSDateFormatterShortStyle];

//set+timezone+to+GMT+5:30.
[dateFormatter+setTimeZone:[NSTimeZone+timeZoneWithName:@"GMT"]];

NSString+*currentTime+=+[dateFormatter+stringFromDate:currentDate];
NSLog(@"User's+current+time+%25@",currentTime);|code-block|syntax|javascript|1243487|希望它能帮到你。|1243488|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Do like this.

<pre><code>NSDate *currentDate = [NSDate date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
// display in 12HR/24HR (i.e. 11:25PM or 23:25) format according to User Settings
[dateFormatter setTimeStyle:NSDateFormatterShortStyle];

//set timezone to GMT 5:30.
[dateFormatter setTimeZone:[NSTimeZone timeZoneWithName:@"GMT"]];

NSString *currentTime = [dateFormatter stringFromDate:currentDate];
NSLog(@"User's current time %@",currentTime);
</code></pre>

Hope it help you.

I'm a bit new to objective C.
I am trying to get system time zone in string format. I need only "GMT 5:30" in my string .

<pre><code>_devTimezone = (NSString*)[NSTimeZone systemTimeZone];
</code></pre>

Get system time zone from NSTimeZone in "GMT 5:30" NSString format

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我对目标C有点陌生。我正在尝试以字符串格式获取系统时区。我只需要“格林尼治时间5:30”在我的字符串。_devTimezone = (NSString*)[NSTimeZone systemTimeZone];

问从NSTimeZone获取“格林尼治时间5:30”NSString格式的系统时区
EN

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问从NSTimeZone获取“格林尼治时间5:30”NSString格式的系统时区EN