loongoffice/android/source/res/layout/toolbar_bottom.xml

<?xml version="1.0" encoding="utf-8"?>

<android.support.v7.widget.Toolbar
    android:id="@+id/toolbar_bottom"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:elevation="3dp"
    android:background="@color/toolbar_background"
    app:popupTheme="@style/LibreOfficeTheme.Toolbar"
    app:theme="@style/LibreOfficeTheme.Toolbar"
    tools:showIn="@layout/activity_main">

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical">

        <LinearLayout
            android:id="@+id/formatting_toolbar"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:orientation="vertical">

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal">

                <ImageButton
                    android:id="@+id/button_bold"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="0.25"
                    android:background="@drawable/image_button_background"
                    android:paddingBottom="5dp"
                    android:paddingTop="5dp"
                    android:src="@drawable/ic_format_bold"/>

                <ImageButton
                    android:id="@+id/button_italic"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="0.25"
                    android:background="@drawable/image_button_background"
                    android:paddingBottom="5dp"
                    android:paddingTop="5dp"
                    android:src="@drawable/ic_format_italic"/>

                <ImageButton
                    android:id="@+id/button_underlined"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="0.25"
                    android:background="@drawable/image_button_background"
                    android:paddingBottom="5dp"
                    android:paddingTop="5dp"
                    android:src="@drawable/ic_format_underlined"/>

                <ImageButton
                    android:id="@+id/button_strikethrough"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="0.25"
                    android:background="@drawable/image_button_background"
                    android:paddingBottom="5dp"
                    android:paddingTop="5dp"
                    android:src="@drawable/ic_format_strikethrough"/>
            </LinearLayout>

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal">

                <ImageButton
                    android:id="@+id/button_align_left"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="0.25"
                    android:background="@drawable/image_button_background"
                    android:paddingBottom="5dp"
                    android:paddingTop="5dp"
                    android:src="@drawable/ic_format_align_left"/>

                <ImageButton
                    android:id="@+id/button_align_center"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="0.25"
                    android:background="@drawable/image_button_background"
                    android:paddingBottom="5dp"
                    android:paddingTop="5dp"
                    android:src="@drawable/ic_format_align_center"/>

                <ImageButton
                    android:id="@+id/button_align_right"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="0.25"
                    android:background="@drawable/image_button_background"
                    android:paddingBottom="5dp"
                    android:paddingTop="5dp"
                    android:src="@drawable/ic_format_align_right"/>

                <ImageButton
                    android:id="@+id/button_align_justify"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="0.25"
                    android:background="@drawable/image_button_background"
                    android:paddingBottom="5dp"
                    android:paddingTop="5dp"
                    android:src="@drawable/ic_format_align_justify"/>
            </LinearLayout>

            <Spinner
                android:id="@+id/font_name_spinner"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:minHeight="50dip"/>

            <Spinner
                android:id="@+id/font_size_spinner"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:minHeight="50dip"/>


        </LinearLayout>

        <LinearLayout
            android:id="@+id/search_toolbar"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:orientation="vertical">

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:orientation="horizontal">

                <EditText
                    android:id="@+id/search_string"
                    android:layout_width="fill_parent"
                    android:layout_height="fill_parent"
                    android:layout_weight="0.2"/>

                <ImageButton
                    android:id="@+id/button_search_up"
                    android:layout_width="fill_parent"
                    android:layout_height="fill_parent"
                    android:layout_weight="0.6"
                    android:background="@drawable/image_button_background"
                    android:padding="10dp"
                    android:src="@drawable/ic_search_direction_down"/>

                <ImageButton
                    android:id="@+id/button_search_down"
                    android:layout_width="fill_parent"
                    android:layout_height="fill_parent"
                    android:layout_weight="0.6"
                    android:background="@drawable/image_button_background"
                    android:padding="10dp"
                    android:src="@drawable/ic_search_direction_up"/>
            </LinearLayout>
        </LinearLayout>
    </LinearLayout>

</android.support.v7.widget.Toolbar>