如何重新加载tableviewcell内的collectionview

Question

I have a collectionView inside a tableViewCell

for example: credit: How to use StoryBoard quick build a collectionView inside UITableViewCell

I would like to reload the collectionView when I update information.

I have put a print in the collectionView's cellForItemAtIndexPath to test if it is being called but it isn't. How can I get the collectionView to reload?

Answer 1

I found out how! In my tableViewCell class I just need to link the collectionView as an outlet so in my tableViewCell's cellForRowAtIndexPath I just needed to call cell.collectionView.reloadData()

Answer 2

使用UITableView indexPath.row为集合视图创建标签，并使用标签创建UICollectionView的实例并重新加载！

Answer 3

1st on tableview cell create this function:

func collectionReloadData(){
        DispatchQueue.main.async(execute: {
            self.collectionView.reloadData()
        })
    }

then call it from

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { ...

    cell.collectionReloadData()