When I add FAB my recyclerview won't show items. In android studios preview everything looks fine, but when I launch the app list is empty.
<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.v7.widget.RecyclerView
android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical"
android:clickable="true"
android:focusable="true"
android:focusableInTouchMode="true"
tools:listitem="@layout/item"
xmlns:tools="http://schemas.android.com/tools"/>
<android.support.design.widget.FloatingActionButton
android:layout_height="wrap_content"
android:layout_width="wrap_content"
app:layout_anchor="@id/list"
app:layout_anchorGravity="bottom|right|end"
android:layout_margin="5dp"
android:clickable="true"/>
</android.support.design.widget.CoordinatorLayout>