RxSwift - 映射UITableView的contentOffset

Question

I'm trying to apply some logic to a component when a UITableView is scrolled, but I can't map the contentOffset property to return the y 's value.

I'm testing like this but nothing happens:

table.rx.contentOffset.map {debugPrint($0)}

How can I do that?

Answer 1

Map on its own will do nothing. You need to subscribe to the stream:

table.rx.contentOffset.subscribe {
  print("offset now \($0.element)")
}.disposed(by: disposeBag)