ios - Custom Button frame doesn't look as good as Round Rect UIButton -

i'm trying draw custom button frame follows:

uibezierpath *stroke = [uibezierpath bezierpathwithroundedrect:self.bounds                                                   cornerradius:rect_cornecr_radius];  [stroke stroke]; 

but reason corner curves thinker sides. if @ uibutton's default frame it's uniform. uibutton, b custom button.

any ideas how can make more uibutton.

you stroking bounds of button. draw line centred on edge view, half of thickness of line outside bounds , not drawn. why full thickness in corners. use cgrectinset on bounds rectangle (inset half thickness of line) , stroke rect.