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I have 2 fragments (Fragment A and Fragment B) both with collapsing toolbar layouts and corresponding recyclerviews within a coordinatorlayout.
If I scroll up in my recyclerview (so the CollapsingToolbarLayout has collapsed) and then open Fragment B from fragment A (Pushing A onto the backstack).
When I return to fragment A by hitting back. The CollapsingToolbarLayout/AppBarLayout is always expanded, even though the recycler view is in the same position.
Anyone experience this?
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CollapsingToolbarLayout is a wrapper for Toolbar which implements a collapsing app bar. It is designed to be used as a direct child of a AppBarLayout .
How do I collapse collapsing Toolbar programmatically? Use mAppBarLayout. setExpanded(true) to expand Toolbar and use mAppBarLayout. setExpanded(false) to collapse Toolbar.
There's a issue related to this. According to Chris Banes.
Add these lines inside onViewCreated() of your fragment to solve the issue.
ViewCompat.requestApplyInsets(mCoordinatorLayout);
It's an old question but none of the answers it's correct. I found this other question where they fixed the problem:
How to restore Collapsing Toolbar Layout State after screen orientation change
You have to set an id to your views in order to restore their state automatically.
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