Show the bottom of collectionView on first load without scrolling and lazy loading

Question

I have developed a Chat App, where I used MessageKit for my iOS app. My issues is when I open any Chat screen, messageCollectionView starts from top ,showing old chats. I need to start the collectionView from bottom as soon as I open any chat screen. I have tried :

messagesCollectionView.scrollToBottom(animated: true)

but there is a performance impact (in case there and more than hundreds/thousands of messages).

Is there any way if inverting the collection view, or starting to add the cells from bottom and then top.

Answer 1

The above suggestions in comments were more robust and correct implementation.

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alternatively you can try this:

//After reloading
DispatchQueue.main.async {
    self.messagesCollectionView.scrollToItem(at: IndexPath(row: 0, section: self.messages.count - 1), at: .top, animated: false)
   }