排序数组与字符串中的日期无比较

Question

大家 我在另一个混乱。我需要用字符串中的日期和与他们的生日（日期）相对应的名称对数组进行排序。然后在表视图中查看它。有什么办法吗？

Answer 1

NSDateFormatter * formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat：@“MM/dd”];

sortedDataSource = [BdayArr sortedArrayUsingComparator:^NSComparisonResult(NSDictionary *obj1, NSDictionary *obj2) { 
    NSDate *d1 = [formatter dateFromString:obj1[kKeyDOB]]; 
    NSDate *d2 = [formatter dateFromString:obj2[kKeyDOB]]; 

    return [d1 compare:d2]; // ascending order 
    //return [d2 compare:d1]; // descending order 
}]; 

NSLog(@"%@",sortedDataSource); 
} 

Answer 2

使用此功能按生日排序。并根据您的要求制定条件。

-(void)sortAllDate:(NSMutableArray *)arrayToSort 
    { 
     NSSortDescriptor *descriptor = [[NSSortDescriptor alloc] initWithKey:@"self" 
                    ascending:YES]; 
     NSArray *descriptors = [NSArray arrayWithObject:descriptor]; 
     NSArray *reverseOrder = [arrayToSort sortedArrayUsingDescriptors:descriptors]; 

     NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; 
     [formatter setDateFormat:@"MM-dd-yyyy"]; 

     NSMutableArray *temp = [[NSMutableArray alloc] init]; 

     for (int k=0; k<[reverseOrder count]; k++) { 

      for(int m=0;m<[frdArray count];m++) 
      { 
       NSString *dateStr = [NSString stringWithFormat:@"%@",[[frdArray objectAtIndex:m] birthday]]; 
       if([dateStr isEqualToString:[formatter stringFromDate:[reverseOrder objectAtIndex:k]]]) 
       { 

        [temp addObject:[frdArray objectAtIndex:m]]; 
       } 
      } 
     } 

     frdArray = temp; 

    }