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iPhone:NSDate将GMT转换为本地时间

nsdate localization objective-c iphone

9

dpigera · 技术社区 · 15 年前

我当前有一个API调用,它以以下格式返回日期/时间: 2010-10-10T07:54:01.878926

我能假设这是格林尼治时间吗?我还将其转换为NSDate对象。有没有办法用本地的iPhone时间来重新计算时间?

4 回复 | 直到 12 年前

1

29

Iñigo Beitia 15 年前

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = @"yyyy-MM-dd'T'HH:mm";

NSTimeZone *gmt = [NSTimeZone timeZoneWithAbbreviation:@"GMT"];
[dateFormatter setTimeZone:gmt];
NSString *timeStamp = [dateFormatter stringFromDate:[NSDate date]];
[dateFormatter release];

2

20

nesimtunc 12 年前

NSDate* localDateTime = [NSDate dateWithTimeInterval:[[NSTimeZone systemTimeZone] secondsFromGMT] sinceDate:pubDate];

3

1

JFK 15 年前

NSDate *sourceDate = [NSDate dateWithTimeIntervalSince1970:gmtTimestamp];
NSTimeZone* destinationTimeZone = [NSTimeZone systemTimeZone];
NSInteger sourceGMTOffset = [destinationTimeZone secondsFromGMTForDate:0];
NSInteger destinationGMTOffset = [destinationTimeZone secondsFromGMTForDate:sourceDate];
NSTimeInterval interval = destinationGMTOffset - sourceGMTOffset;
NSDate* destinationDate = [[[NSDate alloc] initWithTimeInterval:interval sinceDate:sourceDate] autorelease];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = @"yyyy-MM-dd'T'HH:mm";
[dateFormatter setTimeZone:destinationTimeZone];
NSString *localTimeString = [dateFormatter stringFromDate:destinationDate];

4

-2

DisplayName Je Wade Muchkla L 14 年前

NSDate *now = [NSDate date];
NSLog(@"%@", [now dateWithCalendarFormat:@"%Y-%m-%d %H:%M:%S" 
              timeZone:[NSTimeZone timeZoneWithName:@"GMT"]]);