<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/navigation_home"
        android:icon="@drawable/ic_home_black_24dp"
        android:title="@string/title_home"
        />

    <item
        android:id="@+id/navigation_env"
        android:icon="@drawable/ic_cloud_queue_black_24dp"
        android:title="@string/title_activity_main2" />

    <item
        android:id="@+id/navigation_bt"
        android:icon="@drawable/ic_bluetooth_black_24dp"
        android:title="@string/title_activity_main33" />

</menu>