Slide RecyclerView up as you swipe it up, or slide recyclerview down as you swipe down

Question

I want to create a Fragment with a RecyclerView that slides up and shows more items as you slide it up.

Here is an example of what I am talking about.

Initial Creation:

User Swipes Up to slide RecyclerView up, shows more items:

There are a few issues, I would like to not use a CoordinatorLayout, and I would like to set it to where the items in the RecyclerView stack up directly on top of the EditText.

This is the layout code I am using:

<android.support.design.widget.CoordinatorLayout
android:id="@+id/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"
android:visibility="visible">

<android.support.design.widget.AppBarLayout
    android:id="@+id/appBarLayout"
    android:layout_width="match_parent"
    android:layout_height="400dp"
    android:background="@android:color/transparent"
    android:fitsSystemWindows="true"
    android:orientation="vertical">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsingToolbar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@android:color/transparent"
        android:fitsSystemWindows="true"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">

        <View
            android:id="@+id/emptyView"
            android:layout_width="match_parent"
            android:layout_height="400dp"
            android:background="@android:color/transparent"
            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"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

        <EditText
            android:id="@+id/editText"
            android:paddingLeft="16dp"
            android:inputType="textAutoCorrect"
            android:layout_centerVertical="true"
            android:background="@android:color/transparent"
            android:layout_width="match_parent"
            android:layout_height="56dp"/>

    </RelativeLayout>

</RelativeLayout>

And I get something like this:

This is definitely not scalable, and empty view would need to be consistently measured.

Answer 1

I solved this by using a custom TouchListener all of the other solutions were very basic and limited to a specific and boxed use-case.

The way I did this was to implement a new TouchListener based off of this library:

BounceTouchListener

I get the following results: