How to set background of collapsing toolbar with custom behavior to fit whole screen
问题 I'm following nice repo which shows how to make custom behavior of collapsing toolbar WhatsApp-ProfileCollapsingToolbar. What I don't like is when picture below toolbar (toolbar's font is white) is white then toolbar is not visible. So I'm trying to set background of toolbar to some color. First I added to widget_header_view.xml android:background="@android:color/holo_red_light" and now I have it like: <?xml version="1.0" encoding="utf-8"?> <com.anton46.whatsapp_profile.HeaderView xmlns