uiimage - ios6 how to compose 2 images -

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i trying overlay play button on image thumbnail currentl thumbnail displayed using :

if(nil != self.analysis.image) {     self.imageview.image = self.analysis.image; }

i tried use thumbnail background image , , play button transparency image, doesn't appear @ ...

if(nil != self.analysis.image) {     self.imageview.backgroundcolor = [uicolor colorwithpatternimage:self.analysis.image];     self.imageview.image = [uiimage imagenamed:@"whitebackground.png"]; }

what's best way compose them ?

my fault !

the coding right...!! whitebackground.png transparent .... have use display button image ....

if(nil != self.analysis.image) {     self.imageview.backgroundcolor = [uicolor colorwithpatternimage:self.analysis.image];     self.imageview.image = [uiimage imagenamed:@"displaybutton.png"]; }

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