I have an Android app that provides navigation through online folders (like Google Drive). I have implemented the folder navigation with fragments. The main activity has a toolbar and the remaining space is used for fragments. One fragment represents one folder. Subfolders and files are displayed using a RecyclerView and when a new folder is opened, the old fragment gets hidden and a new fragment for the opened folder is added.
Now i want to add animations to my application, specifically, for opening and closing of folders. When a folder in the list is clicked i want the background view of the clicked item to expand to become the background of the new fragment. When back is pressed, the opposite should happen.
Here is a video i found of something similar to what i want to achieve: https://youtu.be/xvy7KUe492g
However in the video the clicked view expands over the toolbar, whereas i want the toolbar to remain visible.
Could you help me out by writing an example, or pointing me to the right direction?
