CollectionView scroll to top

Question

I have one CollectionViewController and have 10 cells in it.

But when I run the app it displays the cell at bottom, but I want to display it from top cell at viewDidLoad.

I tried many things but it didn't work.

How to fix it?

Answer 1

in swift 3: after reloadData()

  self.collectionView.setContentOffset(CGPoint(x:0,y:0), animated: true)

Answer 2

Its work fine......

collectionView.setContentOffset(.zero, animated: false)

Answer 3

Add this line after reloading the collection view.

[self.collectionView scrollToItemAtIndexPath:indexPath atScrollPosition:UICollectionViewScrollPositionTop animated:NO];

Edit:

Just want to add one more point here is if collectionView datasource has ZERO elements or it is nil then above code will not work and probably crash your app.

Write condition to check that datasource is available or not!

if (self.dataArray.count > 0) {
    [self.collectionView scrollToItemAtIndexPath:indexPath atScrollPosition:UICollectionViewScrollPositionTop animated:NO];
}

Where, dataArray is your datasource.