Why does drawRect: work without calling [super drawrect:rect]?

Question

I\'m overriding drawRect: in one of my views and it works even without calling [super drawrect:rect]. How does that work?

- (void)drawRect:(CGRect)rect{  
    C         


        

Answer 1

I'm sure subview doesn't work without calling [super drawrect:rect].If you need to keep the superview's drawing ,you must add [super drawrect:rect] in the subview's drawrect:rect,or you'll replace the drawing.