Kobe Bryant -- Smiling in the Face of Church Fight Allegation

Kobe Bryant went back to doing his thing -- balling on a hoops court -- while San Diego police did their thing ... investigating Kobe's alleged church dust up with a man carrying a cell phone.

Kobe played in a summer league game in Compton yesterday ... and on the way out -- while fans swarmed -- our camera guy asked, "Dude tried to take a picture of you in church?"