With the introductions of the new notification system based on priorities in Android's latest iteration, it is now impossible to modify the volume on the go. I decided to create a little widget that stays on the notification bar of your phone so you can quickly mute the music stream (Usefull if you don't want an instagram video to start blasting in public places)https://play.google.com/store/apps/details?id=io.gomobile.lollipopvolumebutton
You can also read what lead me to create this widget in my latest blog post.
http://mattdargis.blogspot.ca/2014/12/why-volume-settings-is-broken-in.html
Your feedback would be greatly appreciated as this is my first Android application.
Thank you!