NSMutableDictionary *selectedIndexes;
- (BOOL)cellIsSelected:(NSIndexPath *)indexPath;

- (void)viewDidLoad  {
    [super viewDidLoad];
    selectedIndexes = [[NSMutableDictionary alloc]init];
}

- (BOOL)cellIsSelected:(NSIndexPath *)indexPath {
    // Return whether the cell at the specified index path is selected or not
   NSNumber *selectedIndex = [selectedIndexesobjectForKey:indexPath];
   return selectedIndex == nil ? FALSE : [selectedIndex boolValue];
}

//设置行高

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    
    //return 35;
    if ([self cellIsSelected:indexPath]) {
        return 60;
    }
    return 35;
    
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    // Deselect cell
    [tableView deselectRowAtIndexPath:indexPathanimated:TRUE];
 
    // Toggle 'selected' state
    BOOL isSelected = ![selfcellIsSelected:indexPath];
  
    // Store cell 'selected' state keyed on indexPath
    NSNumber *selectedIndex = [NSNumbernumberWithBool:isSelected];
    [selectedIndexes setObject:selectedIndex forKey:indexPath];
       
    // This is where magic happens...
    [self.tableView beginUpdates];
    [self.tableView endUpdates];
}