sheishuoAPP/app/res/layout/base_toolbar.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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="wrap_content"
    android:gravity="center_horizontal|center">

    <android.support.v7.widget.Toolbar
        style="@style/fullToolbarStyle"
        android:id="@+id/sub_toolbar"
        android:layout_width="match_parent"
        android:layout_height="56dp"
        android:background="@color/colorPrimary"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
        app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <FrameLayout
            android:id="@+id/toolbar_layout"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="@color/colorPrimary"
            android:gravity="center">


            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:gravity="center|center_vertical"
                android:orientation="horizontal">

                <Button
                    android:id="@+id/toolbar_btn"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_marginLeft="60dp"
                    android:layout_marginRight="60dp"
                    android:background="#00000000"
                    android:text="" />
            </LinearLayout>

            <LinearLayout
                android:id="@+id/toolbar_left_items"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:gravity="left|center_vertical"
                android:orientation="horizontal">

            </LinearLayout>

            <LinearLayout
                android:id="@+id/toolbar_right_items"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginRight="10dp"
                android:gravity="right|center_vertical"
                android:orientation="horizontal">

            </LinearLayout>

        </FrameLayout>

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


    <TextView
        android:id="@+id/toolbar_title_text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="15dp"
        android:background="@null"
        android:ems="10"
        android:enabled="false"
        android:inputType="none"
        android:textAlignment="center"
        android:textColor="@android:color/white"
        android:textSize="18sp" />


</RelativeLayout>