onUserLeaveHint

override fun onUserLeaveHint() {
        super.onUserLeaveHint()
        //when user presses home button, if not in PIP mode, enter in PIP, requires Android N and above
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N){
            Log.d(TAG, "onUserLeaveHint: was not in PIP")
            pictureInPictureMode()
        }
        else{
            Log.d(TAG, "onUserLeaveHint: Already in PIP")
        }
    }