ios – 设置didRelativeDateFormatting = YES时,stringFromDate返回nil

在NSDateFormatter文档中,

If a date formatter uses relative date formatting,where possible it replaces the date component of its output with a phrase—such as “today” or “tomorrow”—that indicates a relative date.

我使用以下代码：

NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
formatter.dateFormat = [NSDateFormatter dateFormatFromTemplate:@"EEEE dMMMM',' hma"
                                                       options:0
                                                        locale:[NSLocale currentLocale]];
formatter.doesRelativeDateFormatting = YES;
NSLog(@"Date: %@",[formatter stringFromDate:[NSDate date]]);

它记录日期：.

但是注释掉formatter.doesRelativeDateFormatting = YES;输出正确.

日期：8月19日,星期二下午1点18分

我是否理解了相关日期格式错误？

解决方法

嗨,当我修改这样的代码.有用..

NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
 formatter.dateFormat = [NSDateFormatter dateFormatFromTemplate:@"EEEE dMMMM',' hma"
                                                       options:0
                                                        locale:[NSLocale currentLocale]];
 [formatter setDateStyle:NSDateFormatterFullStyle];
 [formatter setTimeStyle:NSDateFormatterShortStyle];
 formatter.doesRelativeDateFormatting = YES;
  NSLog(@"Date: %@",[formatter stringFromDate:[NSDate date]]);