Hey guys, very new to flutter and have been learning in order to start making pull requests on Github. However its been a while since ive used a non-R programming language so I might be a bit rusty with some concepts.
For reference, the repo i want to help out is Thunder
What im trying to do is cause a page to scroll to the top, when the user presses the bottom navigation bar button for that page.
So it goes PageView, CommunityPage, then PostCardList, which is a class containing a ListView showing the cards and whatever else.
I get that I need to pass one of the scrollControllers up to the main PageView level, and then use the BottomNavigationBar onTap (index) function to call an animateTo on it. But i dont know where, or how i pass the scrollcontroller up a level. When i know how, do i just pass it from the PostCardList class, to the CommunityPage class, to the PageView-level class? Or is there some better way??
Sorry for such a low level question but ive been learning this for like 2 or 3 days and have no experience whatsoever hahaha
Thanks!
I have implemented something like this before, if I remember correctly I've done it with riverpod's
ref.listen.Basically, each tab (of
PageView) has its ownScrollControllerand we don't care about exact implementation on each tab and simply notify that tab to scroll up. You can create a simpleStateProvider<int>, then on click ofBottomNavigationBarset the provider to its index. Then on each tab, useref.listen(theprovider.select(value) => value == tabindex)etc.There are other ways, of course, but this one gets the job done.
Thanks for the reply! Bit it might be a bit advanced for me at this stage... Do you have any youtube vids or other resources that might help me out with those concepts?
I understand that this might be a little intimidating at first, but trust it's worth it! Riverpod has a lot of features and is very flexible. Official docs are a great starting point. CodeWithAndrea's riverpod guide is also great.
There are a ton of videos as well, just search for them, I have no special recommendation