Flutter equivalents to `View::onAttachedToWindow` and `View::onDetachedFromWindow`

Question

What are Flutter equivalents to Android's View::onAttachedToWindow and View::onDetachedFromWindow?

Basically, in Flutter, how to determine if user can see a particular widget on screen or is it covered, for example, with another screen on top?

There's no generic events. What is your use-case? Scroll view? — Rémi Rousselet, Oct 23 '18 at 11:08

score 1 · Answer 1 · answered Oct 17 '18 at 00:55

1

Flutter seem to have limited lifecycle events. Maybe what you're looking for can be achieved by overriding initState() and deactivate(). Checkout widget lifecycle here for more info

answered Oct 17 '18 at 00:55

maker.jr

291
1
2
4

Thanks for the link, but none of those callbacks is suitable. – Alex Dmitriev Oct 18 '18 at 13:54

Flutter equivalents to `View::onAttachedToWindow` and `View::onDetachedFromWindow`

1 Answers1