iphone - black background when overriding drawRect in UIScrollView -

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so trying override drawrect in uiscrollview, gives me black background instead of background color i've specified uiscrollview. why this? if remove drawrect code fine:

- (void)drawrect:(cgrect)rect {     [super drawrect:rect];     if (shoulddrawverticallineforprofile){          cgcontextref context = uigraphicsgetcurrentcontext();         cgcolorref separatorcolor = [uicolor colorwithred:47.0/255.0 green:47.0/255.0                                                       blue:47.0/255.0 alpha:1.0].cgcolor;          // add @ bottom         cgpoint startpoint = cgpointmake(60, 0);         cgpoint endpoint = cgpointmake(60, 10000);          cgcontextsavegstate(context);         cgcontextsetlinecap(context, kcglinecapsquare);         cgcontextsetstrokecolorwithcolor(context, separatorcolor);         cgcontextsetlinewidth(context, 5.0);         cgcontextmovetopoint(context, startpoint.x + 0.5, startpoint.y + 0.5);         cgcontextaddlinetopoint(context, endpoint.x + 0.5, endpoint.y + 0.5);         cgcontextstrokepath(context);         cgcontextrestoregstate(context);        }  }

i guess searching is:

myscrollviewinstance.opaque = no

after background of scroll view should not black anymore.


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