How to add pull to refresh in Coordinator layout

Question

I have an AppBar and RecyclerView in CoordiantorLayout. SwipeToRefresh has to be fullscreen but RecyclerView not scrolling down then.

    <com.google.android.material.appbar.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="128dp"/>

    </com.google.android.material.appbar.AppBarLayout>

    <androidx.recyclerview.widget.RecyclerView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />


    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent" />


</androidx.coordinatorlayout.widget.CoordinatorLayout>

How to add fullscreen pull to refresh in Coordinator layout without a library.

Answer 1

You can disable swipe refresh layout when AppBar isn't fully expanded and enable it if it is fully expanded.

vAppBar.addOnOffsetChangedListener(AppBarLayout.OnOffsetChangedListener { _, verticalOffset ->
   vSwipeRefresh.isEnabled = verticalOffset == 0
})