Coordinatorlayout Using The Viewpager's Recyclerview

CoordinatorLayout using the ViewPager's RecyclerView

Chris Banes has posted a sample on Github which shows exactly what you want to do.

Here is the xml file that defines how one can indirectly attach a coordinator layout to the viewpager's fragments.

<android.support.design.widget.CoordinatorLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/main_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
            app:layout_scrollFlags="scroll|enterAlways" />

        <android.support.design.widget.TabLayout
            android:id="@+id/tabs"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />

    </android.support.design.widget.AppBarLayout>

    <android.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="end|bottom"
        android:layout_margin="@dimen/fab_margin"
        android:src="@drawable/ic_done" />

</android.support.design.widget.CoordinatorLayout>

The idea is to let the viewpager have the layout_behavior attribute.

Coordinator layout with viewpager, scroll doesn't work

<androidx.core.widget.NestedScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fillViewport="true"
    app:layout_behavior="@string/appbar_scrolling_view_behavior" >
    
    <android.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="200dp"/>

<!--Wrap content will not work here you have to give fix height-->

</androidx.core.widget.NestedScrollView>

Using coordinator layout with recycler view

The app bar/toolbar part looks okay. However, you have a RecyclerView wrapped in a NestedScrollView and that is unnecessary.

Remove the NestedScrollView entirely and declare your RecyclerView like this:

        <android.support.v7.widget.RecyclerView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scrollbars="none"
            android:id="@+id/list_hotels"
            android:background="@color/back1"
            app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

If you still have problems, update your question with the new XML layout.

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