I would like my Material Design Searchbar to scroll-away/collapse when scrolling down in my recyclerview. I followed the guidelines from here but I can't get it to work.
My activity XML:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto">
<com.google.android.material.appbar.AppBarLayout
android:id="@+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<com.google.android.material.appbar.MaterialToolbar
android:id="@+id/topAppBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="?attr/actionBarSize"
app:title="Test"
app:navigationIcon="@drawable/ic_navigate_back"/>
</com.google.android.material.appbar.AppBarLayout>
<fragment
android:id="@+id/nav_host_fragment_activity_standalone"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="match_parent"
android:layout_height="0dp"
app:defaultNavHost="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="@id/appBarLayout" />
</androidx.constraintlayout.widget.ConstraintLayout>My fragment XML:
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- NestedScrollingChild goes here (NestedScrollView, RecyclerView, etc.). -->
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recUserlist"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginStart="16dp"
android:layout_marginEnd="16dp"
android:orientation="vertical"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:backgroundTint="@color/surface_900">
<com.google.android.material.search.SearchBar
android:id="@+id/search_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Username" />
</com.google.android.material.appbar.AppBarLayout>
<com.google.android.material.search.SearchView
android:id="@+id/searchview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:hint="Username"
app:layout_anchor="@id/search_bar">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recFilteredUserlist"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />
</com.google.android.material.search.SearchView>
</androidx.coordinatorlayout.widget.CoordinatorLayout>The SearchBar does not scroll-away when scrolling down the recyclerview unless the recyclerview is nested inside a NestedScrollView. However, I would like to avoid placing my recyclerview into a nestedscrollview because this causes performance issues: all recyclerview items will be bound/rendered at once.
What am I missing here?
The problem was solved by changing nestedscrollingenabled from false to true on the recyclerview.