android:id="@+id/home"
android:title="@string/home"
android:orderInCategory="100"
+ android:icon="@drawable/ic_home_black_24dp"
app:showAsAction="ifRoom" />
<item
android:id="@+id/back"
android:title="@string/back"
android:orderInCategory="200"
+ android:icon="@drawable/ic_back"
app:showAsAction="ifRoom" />
<item
android:id="@+id/forward"
android:title="@string/forward"
android:orderInCategory="300"
+ android:icon="@drawable/ic_forward"
app:showAsAction="ifRoom" />
</menu>