how to align icon on the left side of the app bar in android

Question

I am trying to push the back icon image on the left side of the app bar in the android but the icon displaying in the middle of app(tool) bar. How to align icon on the right side of the app bar in android? Please have a look at the image below.

<menu
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"
tools:context="divine.calcify.activities.HomeScreenActivity">
    <item
        android:layoutDirection="ltr"
        android:id="@+id/hs_back_button"
        android:icon="@mipmap/ic_back"
        android:title="@string/homescreen_back"
        app:showAsAction="always"
        ></item>
    <item
        android:id="@+id/menu_search"
        android:icon="@mipmap/ic_search"
        android:title="@string/homescreen_search"
        android:orderInCategory="1"
        app:showAsAction="always"
        app:actionViewClass="android.support.v7.widget.SearchView"/>
    <item android:id="@+id/menu_notifications"
        android:icon="@mipmap/ic_divine_notification"
        android:title="@string/homescreen_notification"
        android:orderInCategory="2"
        app:showAsAction="always" />
</menu>

Answer 1

Pragmatically add back button in java file (in Activity)

Try this

 ActionBar actionBar = getSupportActionBar();
 actionBar.setDisplayHomeAsUpEnabled(true);
 actionBar.setTitle("Divine");