By this video, you can learn how collapsing toolbar android can be developed in android studio after androidX or android jetpack up-gradation.
It has complete code of android toolbar collapse on scroll
and custom collapsing toolbar android with different parameters like layout_collapsemode and layout_scrollflags.

example contains how to extract prominent colors from an image and set statusbar color in android also includes how to set toolbar color in android.

code includes parallax scrolling with imageview and pin stuatusbar.

it has also contains code of show toolbar title only when collapsedand solution of most asking question that collapsingtoolbarlayout title not visible and how to set collapsingtoolbarlayout title color.

All the code with explaination with ppt slideshow with android studio live coding and development.