dandelion/app/src/main/res/layout/app_bar_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:fab="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="de.dfa.myapplication.MainActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay" />

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

    <include layout="@layout/content_main" />

    <com.getbase.floatingactionbutton.FloatingActionsMenu
        android:id="@+id/fab_menubutton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_marginBottom="4dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:visibility="gone"
        app:layout_behavior="de.dfa.diaspora_android.ui.FloatingActionsMenuBehavior"
        fab:fab_addButtonColorNormal="@color/fab_big"
        fab:fab_addButtonColorPressed="@color/fab_big_pressed"
        fab:fab_addButtonPlusIconColor="@color/white"
        fab:fab_labelStyle="@style/menu_labels_style">

        <com.getbase.floatingactionbutton.FloatingActionButton
            android:id="@+id/fab_top"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="fab3_click"
            fab:fab_colorNormal="@color/fab_small"
            fab:fab_colorPressed="@color/fab_small_pressed"
            fab:fab_icon="@drawable/fab_top"
            fab:fab_labelStyle="@style/menu_labels_style"
            fab:fab_size="mini"
            fab:fab_title="@string/fab3_title" />

        <com.getbase.floatingactionbutton.FloatingActionButton
            android:id="@+id/fab_search"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="fab2_click"
            fab:fab_colorNormal="@color/fab_small"
            fab:fab_colorPressed="@color/fab_small_pressed"
            fab:fab_icon="@drawable/fab_search"
            fab:fab_labelStyle="@style/menu_labels_style"
            fab:fab_size="mini"
            fab:fab_title="@string/fab2_title" />

        <com.getbase.floatingactionbutton.FloatingActionButton
            android:id="@+id/fab_compose"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="fab1_click"
            fab:fab_colorNormal="@color/fab_small"
            fab:fab_colorPressed="@color/fab_small_pressed"
            fab:fab_icon="@drawable/fab_compose"
            fab:fab_size="mini"
            fab:fab_title="@string/fab1_title" />

    </com.getbase.floatingactionbutton.FloatingActionsMenu>

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