Recycler View below each other not showing up?

Question

I have two simple recycler views that I want to show directly below each other. Here is my layout:

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <include
            layout="@layout/drawer_view_header"
            android:id="@+id/navigation_header"/>

        <android.support.v7.widget.RecyclerView
            android:layout_below="@id/navigation_header"
            android:id="@+id/friends_list"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>

        <android.support.v7.widget.RecyclerView
            android:layout_below="@id/friends_list"
            android:id="@+id/followers_list"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>

    </RelativeLayout>

I have my navigationHeader above my first recycler view called friends_list which works fine, and I can see the friends_list recycler view which has android:layout_height="wrap_content" but the followers_list recycler view doesn't seem to show even though all the contents of my friends_list is all shown. Any ideas why it is not showing up? Thanks!

Answer 1

While the above answers do work they don't preserve the wrap content behavior of recycler view for that you need to use a NestedScrollView.

For eg you need to do something like this:-

 <android.support.v4.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">

 <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <include
            layout="@layout/drawer_view_header"
            android:id="@+id/navigation_header"/>

        <android.support.v7.widget.RecyclerView
            android:layout_below="@id/navigation_header"
            android:id="@+id/friends_list"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>

        <android.support.v7.widget.RecyclerView
            android:layout_below="@id/friends_list"
            android:id="@+id/followers_list"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>

    </RelativeLayout>

</android.support.v4.widget.NestedScrollView>

Or you may also use a LinearLayout with vertical alignment in your NestedScrollView.

*Note:- this will only work with recycler view above 23.2.0

compile 'com.android.support:recyclerview-v7:23.2.0'