// NSString 转化为 NSDate
- (NSDate *) stringToDate: (NSString *)dateStr
{
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSDate *date = [dateFormatter dateFromString:dateStr];
return date;
}
// NSDate 转化为 NSString
- (NSString *) dateToString: (NSDate *)date
{
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSString *dateStr = [dateFormatter stringFromDate:date];
return dateStr;
}
// 将本地日期字符串转为UTC日期字符串
//本地日期格式:2013-08-03 12:53:51
//可自行指定输入输出格式
- (NSString *)getUTCFormatFromLocalDateStr: (NSString *)localDateStr
{
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
//输入格式
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSTimeZone *timeZone = [NSTimeZone timeZoneWithName:@"UTC"];
[dateFormatter setTimeZone:timeZone];
NSDate *dateFormatted = [dateFormatter dateFromString:localDateStr];
//输出格式
[dateFormatter setDateFormat:@"yyyy-MM-dd 'T' HH:mm:ss Z"];
NSString *dateString = [dateFormatter stringFromDate:dateFormatted];
return dateString;
}
//将UTC日期字符串转为本地时间字符串
//输入的UTC日期格式:2013-0803 T04:53:51+0000
- (NSString *)getLocalDateFormatFromUTCDateStr:(NSString *)utcDateStr
{
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
//输入格式
[dateFormatter setDateFormat:@"yyyy-MM-dd 'T' HH:mm:ss Z"];
NSTimeZone *localTimeZone = [NSTimeZone localTimeZone];
[dateFormatter setTimeZone:localTimeZone];
NSDate *dateFormatted = [dateFormatter dateFromString:utcDateStr];
//输出格式
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSString *dateString = [dateFormatter stringFromDate:dateFormatted];
return dateString;
}