The idea is to create wave transitions below the header when the user opens the Navigation Drawer, the transitions have to be meaningful so I created a loop of 5 different waves that synched with each other in a series order using Android's VectorDrawable.
Full Documentation here
https://medium.com/@youssefassad/navigation-drawer-with-wave-animation-21bfb4e647fd
MIT License
Copyright (c) 2018 Youssef Assad
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so.