Android Question Detect media button use on BT earbuds

Hi All!
I have an app for Internet radio that also plays downloaded files. I use Exoplayer for this and it works perfectly. I recently bought BT earbuds and noticed that I need to be able to control the play and pause functions in my app from the mediabutton on the earbuds. I have searched the forum and tried many of the ideas but unfortunately I have not been able to make it work.
Have someone found a solution to this that works for recent Android versions?

Gunnar Jonsson