<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="?listPreferredItemHeightSmall"
        android:paddingLeft="16dp"
        android:paddingRight="16dp">

        <EditText
            android:id="@id/v4a_et_ddc_search"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="@string/pref_dynamicsystem_output"
            android:maxLines="1" />
    </LinearLayout>

    <android.support.v7.widget.RecyclerView
        android:id="@id/v4a_ddc_recyclerview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:clipToPadding="false" />
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="?listPreferredItemHeightSmall"
        android:paddingLeft="16dp"
        android:paddingRight="16dp">

        <EditText
            android:id="@id/v4a_et_ddc_search"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="@string/pref_dynamicsystem_output"
            android:maxLines="1" />
    </LinearLayout>

    <android.support.v7.widget.RecyclerView
        android:id="@id/v4a_ddc_recyclerview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:clipToPadding="false"
        android:paddingTop="8dp" />
</LinearLayout>

Add 8dp paddingtop to listview
Add 8dp paddingtop to listview