iphone - Can I use UIBezierPath to draw a shadow image around a UITableView section? -


i have shadow image draw around outer edge of grouped uitableview section. image:

enter image description here

i can uibezierpath represents rect want draw around, can't figure out how repeat image along route of rect. far fills rect image:

uiimage *patternimg = [uiimage imagenamed:@"cellshadow"]; uicolor *fill = [uicolor colorwithpatternimage:patternimg]; [fill setfill]; cgrect asectrect = [self rectforsection:0]; uibezierpath *asectpath = [self createroundedpath:asectrect]; [asectpath fill];

is possible? need do?

unfortunately, there's no way have uibezierpath use image "brush" you'd want. can have coregraphics draw shadow you:

cgcontextref context = uigraphicsgetcurrentcontext(); cgcontextsetshadow(context, cgsizezero, myshadowradius); // draw shape here

now if draw 1 shape shadow. if draw more shapes, each own shadow might not want. solution called transparency layer, not related calayers or kind of "grouping" in coregraphics:

cgcontextref context = uigraphicsgetcurrentcontext(); cgcontextsetshadow(context, cgsizezero, myshadowradius); cgcontextbegintransparencylayer(context, null); // draw shapes here. cgcontextendtransparencylayer(context);

between cgcontextbegintransparencylayer , cgcontextendtransparencylayer calls shadow disabled. after cgcontextendtransparencylayer call, shadow applied has been drawn between begin , end if 1 shape.


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