学步园

self.isOpen = [NSMutableArray array];
    for (int j = 0; j < i; j++) {
        [self.isOpen addObject:[NSNumber numberWithInt:0]];
    }

-(void)buttonClick:(UIButton*)button

{

    NSNumber *num = self.isOpen[tag];
   
    if(num.intValue == 1){
        [self.isOpen removeObjectAtIndex:tag];
        [self.isOpen insertObject:[NSNumber numberWithInt:0] atIndex:tag];
    } else
    {
        [self.isOpen removeObjectAtIndex:tag];
        [self.isOpen insertObject:[NSNumber numberWithInt:1] atIndex:tag];
       
    }
    
    [self.tableView reloadSections:[NSIndexSet indexSetWithIndex:tag] withRowAnimation:UITableViewRowAnimationFade];

}

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

{

   return 2;

}

-(NSInteger)tableView:(UITableView *)tableViewnumberOfRowsInSection:(NSInteger)section

{

 NSNumber *num = [self.isOpen objectAtIndex:section];
     
        if(num.intValue == 1)
            
        {
            
            return 4;
            
        }else{
            
            return 0;
            
        }

}