Android Toolbar Action Button Height

I have res/layout/toolbar.xml which is:

Also you can check the layout margin enabling in debug menu "show layout margin".

Source:

Here the specs for a smartphone:

If you check the style Widget.AppCompat.ActionButton you will find the minHeight and minWidth specs:

values:

<stylename="Base.Widget.AppCompat.ActionButton"parent=""><itemname="android:minWidth">@dimen/abc_action_button_min_width_material</item><itemname="android:minHeight">@dimen/abc_action_button_min_height_material</item></style><dimenname="abc_action_button_min_height_material">48dp</dimen><dimenname="abc_action_button_min_width_material">48dp</dimen>

values-v21:

<stylename="Widget.Material.ActionButton"parent="Widget.ActionButton"><itemname="minWidth">@dimen/action_button_min_width_material</item><itemname="minHeight">@dimen/action_button_min_height_material</item></style><dimenname="action_button_min_width_material">48dp</dimen><dimenname="action_button_min_height_material">48dp</dimen>

Solution 2:

I'm not entirely sure this will solve your problem but try replacing

android:layout_height="?actionBarSize"

with

android:layout_height="?android:attr/actionBarSize"

in toolbar.xml. Again, not entirely sure it will work.