我曾试过很多次将字符串转换2013-01-27T02:31:47+08:00
到NSDate的。 我已经找到了格式指导苹果并复制其代码和尝试,但它不工作。
NSDateFormatter *rfc3339DateFormatter = [[NSDateFormatter alloc] init];
NSLocale *enUSPOSIXLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"];
[rfc3339DateFormatter setLocale:enUSPOSIXLocale];
[rfc3339DateFormatter setDateFormat:@"yyyy'-'MM'-'dd'T'HH':'mm':'ss'Z'"];
[rfc3339DateFormatter setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:8]];
// Convert the RFC 3339 date time string to an NSDate.
NSDate *date = [rfc3339DateFormatter dateFromString:@"2013-01-27T02:31:47+08:00"];
您的格式应该是@"yyyy-MM-dd'T'HH:mm:ssZZZZZ"
你只需要围绕不会被格式化使用字母单引号。
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
[dateFormat setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];
NSString *dateTimeString = @"2013-01-09 16:00:00";
NSLog(@"DateTimeString = %@", dateTimeString);
NSDate *myDate =[dateFormat dateFromString:dateTimeString];
NSLog(@"myDate: %@", myDate);
输出:
dateTimeString = 2013-01-09 16:00:00
myDate: = 2013-01-09 16:00:00 +0000
为了呈现一个日期给用户,转换的NSDate到的NSString,使用stringFromDate,但没有设置时区(以便使用本地时区):
NSDateFormatter *dateFormat2 = [[NSDateFormatter alloc] init];
[dateFormat2 setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSString *localDateString = [dateFormat2 stringFromDate:myDate];
NSLog(@"localDateString: %@", localDateString);
输出:
localDateString: 2013-01-09 17:00:00