Help radio widgit for lockscreen

[sivashanmugam]

i used to listen fm radio while travelling, But whenever i want to move to some other radio station frequency , i have to first unlock and move to other radio station.(because i made a pattern unlock in my mobile)

Is it possible to move to next radio station without unlocking. Because while travelling (moving) unlocking becomes difficult and it takes too many attempts.

anybody having solution for this.I could't find any app for this.