Toolbar align title in center with back button

Question

I'm adding the Toolbar inside my app but seems I have a issue. In the app I should have a button that is on the right of the screen, and the title in center. But when I go deeper in the app I should display the back arrow on the left, by doing getSupportActionBar().setDisplayHomeAsUpEnabled(). And this is working fine but when I add the back button the text moves to the right so the back button can have some space I guess. Can someone tell me how can I have my button on the right and the title always in the center, no mather if the back button is displayed or not?

Here is my toolbar xml layout code:

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/white"
    android:padding="5dp"
    tools:ignore="MissingPrefix">

    <RelativeLayout
        android:id="@+id/toolbar_info_holder"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">

        <TextView
            android:id="@+id/toolbar_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:gravity="center"
            android:textColor="@color/actionbar_title_color" />

        <ImageView
            android:id="@+id/toolbar_image"
            android:layout_width="40dp"
            android:layout_height="40dp"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true" />

        <TextView
            android:id="@+id/toolbar_count"
            android:layout_width="13dp"
            android:layout_height="13dp"
            android:layout_alignParentRight="true"
            android:layout_alignParentTop="true"
            android:background="@drawable/red_circle"
            android:gravity="center"
            android:text="4"
            android:textColor="@color/white"
            android:textSize="9sp" />
    </RelativeLayout>

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

Answer 1

What worked for me is to set :

android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"

to the child view of the Toolbar, which is a LinearLayout for me (and a RelativeLayout for you). It sounded weird to me first but it's working so I won't complain.