Load partial data for tableview on scroll down

I would try to implement this in

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

This is called a a cell needs to be loaded.

So, I would keep an index of the last loaded item (1000 at first)

var lastLoaded = 0

Set its value when you send the web request

in cellForRowAt, test if index.row >= lastLoaded - 100

Then initiate a new web request for the next 1000 (do it in another thread to avoid blocking the scroll)

but update immediately lastLoaded += 1000

Thanks! And how would I manage that in SwiftUI with a List element?

Should try a similar approach. Creating a @State var to replace lastLoaded.

Anyway, you should close this thread on the correct answer (if answer is OK) and start a new thread in SwiftUI (possibly refering to this one). You'll find people more focused to answer your question.

What you want to do is "prefetch" the data. See UITableViewDataSourcePrefetching for more information.

Thanks John! Now I just need something that also works with SwiftUI 🙂

see https://forums.developer.apple.com/thread/129897