//输入的日期字符串形如：@"1992-05-21 13:08:08"
- (NSDate *)dateFromString:(NSString *)dateString{
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat: @"yyyy-MM-dd HH:mm:ss"];
NSDate *destDate= [dateFormatter dateFromString:dateString];
[dateFormatter release];
return destDate;
}
- (NSString *)stringFromDate:(NSDate *)date{
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
//zzz表示时区，zzz可以删除，这样返回的日期字符将不包含时区信息 +0000。
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss zzz"];
NSString *destDateString = [dateFormatter stringFromDate:date];
[dateFormatter release];
return destDateString;
}
- (IBAction)handleDidPressBtn1{
NSLog(@"%@\n", [self dateFromString:@"2011-08-09 12:02:01"]);
NSLog(@"%@\n", [self stringFromDate:[self dateFromString:@"2011-08-09 12:02:01"]]);
}
输出结果如下：
2011-08-09 04:02:01 +0000
2011-08-09 12:02:01 GMT+08:00
