Bottomsheet Fly Away With Visibility Change

I have a bottom sheet with a NestedScrollView inside (see below). When I press on a FAB button, I want to make some parts in this NestedScrollView invisible. But when I change some

Solution 1:

I ran into this, took a while to figure out what was the cause.

It's because you're using android:animateLayoutChanges, which surfaces a bug in either BottomSheetBehavior or CoordinatorLayout.

Remove it and the BottomSheet will stop animating on its own when it shouldn't. Not a fix, but a workaround at least.

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Update:

Turns out that if you enable "animateLayoutChanges" programmatically by setting the LayoutTransition instance to use, you can set a flag on it that will prevent it from messing with views that are ancestors of the one you're using android:animateLayoutChanges on (aka: your BottomSheet container):

LayoutTransitiontransition=newLayoutTransition();
transition.setAnimateParentHierarchy(false);
yourLinearLayoutThatNeedsLayoutAnimation.setLayoutTransition(transition);

Solution 2:

Removing the following line from my root layout solved this problem:

android:animateLayoutChanges="true"

Solution 3:

As a workaround, you need to remove the android:animateLayoutChanges="true"from the parent coordinator layout

Solution 4:

Try to make the parent of bottomSheet an independent CoordinatorLayout without having any other child Views. For example:

<RelativeLayoutandroid:id="@+id/some_id"android:layout_width="match_parent"android:layout_height="match_parent"><Some_View.../><Some_Other_view>
        .
        .
        .</Some_Other_view><androidx.coordinatorlayout.widget.CoordinatorLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_alignParentBottom="true"><includeandroid:id="@+id/included_layout"layout="@layout/bottom_sheet" /></androidx.coordinatorlayout.widget.CoordinatorLayout></RelativeLayout>

Solution 5:

Change View.GONE to View.INVISIBLE. Since the View.GONE has no size, the bottom sheet can't compute the height of the child being updated.