Is there any similar feature to SliverAppBar's snap?

[2coo]

I am trying to build the AppBar like this. Any possible way to do that?

output.mp4

[tenhobi]

Hey @giva9712, it seems I can play the video neither on a desktop nor mobile. Could you please check you uploaded the correct thing?

[2coo]

I uploaded it into free video hosting but it will expire in 2 days.

https://staging.streamable.com/gkfdx2

[tenhobi]

I see now. Hmm, I think something similar should be possible, since you can build anything based on values provided through the builder. Maybe you could also add floating to that, so it works even when scrolling down a lot.

Try a lot of different options in here https://netglade.github.io/sliver_app_bar_builder

[2coo]

@tenhobi,

I like SliverAppBarBuilder than SliverAppBar because it saves more boilerplate for animating.

But I need to collapse the SliverAppBarBuilder height to the given barHeight if the parent SingleChildScrollView scroll position is greater than some X value. If less than X, expand the SliverBarBuilder to the given contentHeight.

Put simply, any similar feature like SliverAppBar's snap: true?

[tenhobi]

Not at the moment. :/

I did some research and I have found this which has some gifs showing the difference. https://api.flutter.dev/flutter/material/SliverAppBar/snap.html

Wince we use SliverPersistentHeaderDelegate underhood, which has something called "snap configuration" there https://api.flutter.dev/flutter/widgets/SliverPersistentHeaderDelegate/snapConfiguration.html, couldn't that be the thing to play around with to make such an effect?

Would you want to try and create a pull request for that? (I know for sure I will not have a time for trying to create that this year for sure.)