UICollectionView点击效果

UICollectionView的item点击效果需要自己实现，系统提供了

//高亮效果
- (void)collectionView:(UICollectionView *)collectionView didHighlightItemAtIndexPath:(NSIndexPath *)indexPath;
//非高亮效果
- (void)collectionView:(UICollectionView *)collectionView didUnhighlightItemAtIndexPath:(NSIndexPath *)indexPath;

//点击item,cell上图片改变
-(void) collectionView:(UICollectionView *)collectionView didHighlightItemAtIndexPath:(NSIndexPath *)indexPath
{
    QFTIconCollectionCell *cell = (QFTIconCollectionCell *)[collectionView cellForItemAtIndexPath:indexPath];
    NSString *imageName = [NSString stringWithFormat:@"select%@",[self.iconArray objectAtIndex:indexPath.item]];
    cell.iconImage.image = [UIImage imageNamed:imageName];
}
//点击放开item,cell上图片复原
- (void)collectionView:(UICollectionView *)collectionView  didUnhighlightItemAtIndexPath:(NSIndexPath *)indexPath
{
    QFTIconCollectionCell *cell = (QFTIconCollectionCell *)[collectionView cellForItemAtIndexPath:indexPath];
    NSString *imageName = [self.iconArray objectAtIndex:indexPath.item];
    cell.iconImage.image = [UIImage imageNamed:imageName];
}

主：UITableView也有这样两个方法，可以根据需求适当选用