ios - 如何按升序对字符串中包含日期的数组进行排序

Question

我有一组字典，每本字典都包含一个日期参数。日期参数数组(包含在字典中)如下:

 [@"16-1-2015 7:00PM",@"15-1-2014 11:30AM",@"14-1-2014 7:00PM",
 @"15-1-2015 6:30AM ".@"16-1-2015 8:30PM"]

我需要如下输出:

[@"16-1-2015 8:30PM",@"16-1-2015 7:00PM",@"15-1-2015 6:30AM ",
@"15-1-2014 11:30AM",@"14-1-2014 7:00PM"];

Answer 1

你可以试试这个:

NSArray *dateStringArray = @[ @"16-1-2015 7:00PM", @"15-1-2014 11:30AM", @"14-1-2014 7:00PM", @"15-1-2015 6:30AM ", @"16-1-2015 8:30PM" ];

 - (NSArray *)sortDateStringArray:(NSArray *)dateStringArray
    {
        NSDateFormatter *dateFormater = [[NSDateFormatter alloc] init];
        [dateFormater setDateFormat:@"dd-MM-yyyy h:mma"];
        NSArray *sortedArray = [dateStringArray sortedArrayUsingComparator:^NSComparisonResult(NSString *obj1, NSString *obj2) {
          NSDate *date1 = [dateFormater dateFromString:obj1];
          NSDate *date2 = [dateFormater dateFromString:obj2];
          return [date2 compare:date1];
        }];
        return sortedArray;
    }

我认为最好将您的 dateString 转换为 NSDate 然后比较
希望这有帮助!!!