android - RecyclerView in BottomSheet not working as expected

Question

I have a problem with RecyclerView directly inside of layout with bottomsheetbehaviour. The problem is that when bottom sheet is expanded and content is scrolled down, when I go to scroll back up it causes Bottom Sheet to start collapsing, instead of RecyclerView first being scrolled back to top.

Here's a video to demonstrate the problem. As you can see the problem appears when I scroll down on expanded bottom sheet. It immediately start to collapse instead of "waiting" for RecyclerView to scroll to top first.

Here is my layout code

<?xml version="1.0" encoding="utf-8"?>

<androidx.coordinatorlayout.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:id="@+id/scheduleRoot"
    android:layout_height="match_parent"
    tools:context=".schedule.ScheduleFragment">


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/scheduleSheet"
        app:behavior_peekHeight="300dp"
        android:elevation="16dp"
        android:clickable="false"
        android:focusable="false"
        android:background="@drawable/bg_bottom_sheet"
        app:layout_behavior="com.google.android.material.bottomsheet.BottomSheetBehavior">

        <androidx.recyclerview.widget.RecyclerView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/scheduleRecyclerView"
            android:clickable="true"
            android:focusable="true"
            android:layout_marginTop="8dp"/>

    </LinearLayout>

</androidx.coordinatorlayout.widget.CoordinatorLayout>

Any help is appreciated!

Answer 1

I just encountered same problem, but I fixed it by adding this to onCreate:

androidx.core.view.ViewCompat.setNestedScrollingEnabled(recyclerview, false);