Check this project on dribbble https://dribbble.com/shots/3349372-Bubble-Picker-Open-Source-Component
Read how we did it on Medium https://medium.com/@igalata13/how-to-create-a-bubble-selection-animation-on-android-627044da4854#.ajonc010b
Source code https://github.com/igalata/Bubble-Picker