在iOS中将GMT转换为IST

Question

如何在IOS中将GMT转换为IST？我有代码可以给我时间GMT.但我想将其转换为相应的本地时区并在我的应用程序中使用它.我怎样才能做到这一点 ？提前致谢.

Answer 1

下面的代码将GMT转换为IST.

NSString *inDateStr = @"2000/01/02 03:04:05";
NSString *s = @"yyyy/MM/dd HH:mm:ss";

// about input date(GMT)
NSDateFormatter *inDateFormatter = [[NSDateFormatter alloc] init];
inDateFormatter.dateFormat = s;
inDateFormatter.timeZone = [NSTimeZone timeZoneWithAbbreviation:@"GMT"];
NSDate *inDate = [inDateFormatter dateFromString:inDateStr];

// about output date(IST)
NSDateFormatter *outDateFormatter = [[NSDateFormatter alloc] init];
outDateFormatter.timeZone = [NSTimeZone timeZoneWithAbbreviation:@"IST"];
outDateFormatter.dateFormat = s;
NSString *outDateStr = [outDateFormatter stringFromDate:inDate];

// final output
NSLog(@"[in]%@ -> [out]%@", inDateStr, outDateStr);