ios - How to add HeaderView in UICollectionView like UITableView's tableHeaderView

Question

How can I add a header view / top view (not section header) at the top of a UICollectionView?

It should act excactly as UITableView's tableHeaderView property.

So it needs to sit on top of the first section header view (before the section at index 0), scroll along with the rest of the content, and have user interaction.

The best I've come up with so far is to make a special XIB (with MyCollectionReusableView subclass of UICollectionReusableView as the File's owner) for the first section header view that is big enough to also contain my subviews in header, it's kind of a hack, I think, and I haven't managed to detect touches.

Not sure if I can make my MyCollectionReusableView subclass to allow touches or there's a better way.

Answer 1

self.collectionView  =  [[UICollectionView alloc] initWithFrame:CGRectMake(0, 0, 320, self.view.frame.size.height) collectionViewLayout:flowlayout];
self.collectionView.contentInset = UIEdgeInsetsMake(50, 0, 0, 0);
UIImageView *imagev = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"015.png"]];
imagev.frame = CGRectMake(0, -50, 320, 50);
[self.collectionView addSubview: imagev];
[self.view addSubview: _collectionView];

I use the attribute contentInset to insert a frame to the top of the UICollectionView, then I add the image view to it, and it succeeds. I think it can act excactly as UITableView's tableHeaderView property. What do you think?