A light-weight sample how to visualize sound via Audio Visualizer for Android. Very simple and easy to understand. You can use it in your projects for free.
A starter project for Android MVVM Project with DataBinding Library. Completed with samples for
ObservableScrollView is an Android library to observe scroll events on scrollable views.
It's easy to interact with the Toolbar introduced in Android 5.0 Lollipop and may be helpful to implement look and feel of Material Design apps.