ios tableview/collectionView关于点击cell后 刷新cell

ios tableview/collectionView关于点击cell后 刷新cell

用数组记录点击cell的索引值，然后用数组的- (BOOL)containsObject:(ObjectType)anObject;这个方法判断该点击cell的索引值是否在数组中，来进行相应的操作。

#pragma mark - UICollectionViewDataSource
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
    return 50;
}

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    WLSelectSeatCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:seatCell forIndexPath:indexPath];

    cell.titleLabel.text = [NSString stringWithFormat:@"%ld",indexPath.row +1];
    
    if ([self.seatArray containsObject:indexPath])
    {
        cell.titleLabel.textColor = [UIColor redColor];
        cell.titleLabel.layer.borderColor = [UIColor redColor];
    }
    else
    {
        cell.titleLabel.textColor = [UIColor lightGrayColor];
        cell.titleLabel.layer.borderColor = [UIColor lightGrayColor].CGColor;
    }

    return cell;
}

#pragma mark - UICollectionViewDelegateFlowLayout
-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
    if ([self.seatArray containsObject:indexPath])
    {
        [self.seatArray removeObject:indexPath];
    }
    else
    {
        [self.seatArray addObject:indexPath];
    }
    
    [self.seatCollectionView reloadData];
}