Using AppBarLayout and CollapsingToolbarLayout without a toolbar

Question

There's not many examples of these new layouts out on the Internet and those few that are out there are all based on same basic approach. How about if I don't have a proper toolbar in my app, but still want to use the cool functionalities of new material design layouts?

One thing that I've been trying out is using a MapView and RecyclerView inside CoordinatorLayout with a parallax scrolling effect. It works great, but there's a problem. If my adapter count is low, the RecyclerView doesn't remain on the bottom of screen. Here's some images to better describe the problem.

Initial screen:

RecyclerView scrolls over MapView, leaving blank space below:

Is there a way to keep RecyclerView on bottom?

My xml looks like this:

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:app="http://schemas.android.com/apk/res-auto">

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

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_scrollFlags="scroll|enterAlways">

        <com.google.android.gms.maps.MapView
            android:id="@+id/tts_main_map"
            android:layout_width="match_parent"
            android:layout_height="250dp"
            app:layout_collapseMode="parallax" />
    </android.support.design.widget.CollapsingToolbarLayout>

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

<android.support.v7.widget.RecyclerView
    android:id="@+id/recyclerView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:scrollbars="vertical"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    />

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

Answer 1

Try to set the android:minHeight property of the CollapsingToolbarLayout dynamically depending on how many items you have in the list. I.e. you should set (pseudo-code):

  minHeight = allAvailableHeight - (oneListItemHeigh * listItemCount)

PS. It just an idea, I did not tried. But I think it should works.