menu.xml

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@id/menu_action_search"
        android:orderInCategory="1"
        android:icon="@drawable/ic_menu_search_blue"
        app:iconTint="#008aff"
        app:showAsAction="always"
        app:actionViewClass="android.support.v7.widget.SearchView"
        android:title="@string/menu_search"/>
</menu>