Vector Drawables used as menu icons at all API Levels

menu.xml

<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=".MainActivity">
    <item android:id="@+id/action_logout"
        android:title="@string/action_logout"
        android:orderInCategory="100"
        app:showAsAction="always"/>
</menu>

MyActivityOrFragment.java

Toolbar toolbar;

//Call initToolBarMenuIcons after you've inflated the layout into your Activity/Fragment that holds your Toolbar.
@MainThread
@SuppressLint("NewApi") //suppress warning, since using DrawableCompat to set tint
public void initToolBarMenuIcons() {
    toolbar.inflateMenu(R.menu.main);
    //Manually adding icon since it's a vector drawable and we can't currently inflate from XML into menuitems
    Drawable wrappedLogoutIcon = DrawableCompat.wrap(AppCompatResources.getDrawable(getContext(), R.drawable.ic_logout_black_24dp));
    //Tint it too
    DrawableCompat.setTint(wrappedLogoutIcon, Color.WHITE);
    //Set the tinted vector drawable to the item
    toolbar.getMenu().findItem(R.id.action_logout).setIcon(wrappedLogoutIcon);
}